Accumulated changes for message queue (#6600)

* rename

* set agent address

* refactor

* add agent sub

* pub messages

* grpc new client

* can publish records via agent

* send init message with session id

* fmt

* check cancelled request while waiting

* use sessionId

* handle possible nil stream

* subscriber process messages

* separate debug port

* use atomic int64

* less logs

* minor

* skip io.EOF

* rename

* remove unused

* use saved offsets

* do not reuse session, since always session id is new after restart

remove last active ts from SessionEntry

* simplify printing

* purge unused

* just proxy the subscription, skipping the session step

* adjust offset types

* subscribe offset type and possible value

* start after the known tsns

* avoid wrongly set startPosition

* move

* remove

* refactor

* typo

* fix

* fix changed path

.gitignore

@@ -87,7 +87,6 @@ other/java/hdfs/dependency-reduced-pom.xml
 
 # binary file
 weed/weed
-weed/mq/client/cmd/weed_pub_kv/weed_pub
 docker/weed
 
 # test generated files
@@ -95,7 +94,4 @@ weed/*/*.jpg
 docker/weed_sub
 docker/weed_pub
 weed/mq/schema/example.parquet
-docker/weed_pub_kv
+docker/agent_sub_record
-docker/weed_pub_record
-docker/weed_sub_kv
-docker/weed_sub_record

docker/Makefile

@@ -9,10 +9,8 @@ binary:
 	export SWCOMMIT=$(shell git rev-parse --short HEAD)
 	export SWLDFLAGS="-X github.com/seaweedfs/seaweedfs/weed/util.COMMIT=$(SWCOMMIT)"
 	cd ../weed && CGO_ENABLED=$(cgo) GOOS=linux go build $(options) -tags "$(tags)" -ldflags "-s -w -extldflags -static $(SWLDFLAGS)" && mv weed ../docker/
-	cd ../weed/mq/client/cmd/weed_pub_kv && CGO_ENABLED=$(cgo) GOOS=linux go build && mv weed_pub_kv ../../../../../docker/
+	cd ../other/mq_client_example/agent_pub_record && CGO_ENABLED=$(cgo) GOOS=linux go build && mv agent_pub_record ../../../docker/
-	cd ../weed/mq/client/cmd/weed_pub_record && CGO_ENABLED=$(cgo) GOOS=linux go build && mv weed_pub_record ../../../../../docker/
+	cd ../other/mq_client_example/agent_sub_record && CGO_ENABLED=$(cgo) GOOS=linux go build && mv agent_sub_record ../../../docker/
-	cd ../weed/mq/client/cmd/weed_sub_kv && CGO_ENABLED=$(cgo) GOOS=linux go build && mv weed_sub_kv ../../../../../docker/
-	cd ../weed/mq/client/cmd/weed_sub_record && CGO_ENABLED=$(cgo) GOOS=linux go build && mv weed_sub_record ../../../../../docker/
 
 binary_race: options = -race
 binary_race: cgo = 1
@@ -97,6 +95,9 @@ s3tests: build s3tests_build
 brokers: build
 	docker compose -f compose/local-brokers-compose.yml -p seaweedfs up
 
+agent: build
+	docker compose -f compose/local-mq-test.yml -p seaweedfs up
+
 filer_etcd: build
 	docker stack deploy -c compose/swarm-etcd.yml fs
 

docker/compose/local-mq-test.yml

@@ -1,5 +1,3 @@
-version: '3.9'
-
 services:
   server:
     image: chrislusf/seaweedfs:local
@@ -19,9 +17,16 @@ services:
     depends_on:
       server:
         condition: service_healthy
+  mq_agent:
+    image: chrislusf/seaweedfs:local
+    ports:
+      - 16777:16777
+    command: "mq.agent -broker=mq_broker:17777 -port=16777"
+    depends_on:
+      - mq_broker
   mq_client:
     image: chrislusf/seaweedfs:local
     # run a custom command instead of entrypoint
     command: "ls -al"
     depends_on:
-      - mq_broker
+      - mq_agent

other/mq_client_example/agent_pub_record/agent_pub_record.go

@@ -3,9 +3,9 @@ package main
 import (
 	"flag"
 	"fmt"
+	"github.com/seaweedfs/seaweedfs/other/mq_client_example/example"
 	"github.com/seaweedfs/seaweedfs/weed/mq/client/agent_client"
 	"github.com/seaweedfs/seaweedfs/weed/mq/schema"
-	"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
 	"log"
 	"sync"
 	"sync/atomic"
@@ -20,13 +20,26 @@ var (
 
 	clientName = flag.String("client", "c1", "client name")
 
-	namespace   = flag.String("ns", "test", "namespace")
+	namespace = flag.String("ns", "test", "namespace")
-	t           = flag.String("t", "test", "t")
+	t         = flag.String("t", "test", "t")
-	seedBrokers = flag.String("brokers", "localhost:17777", "seed brokers")
+	agent     = flag.String("agent", "localhost:16777", "mq agent address")
 
 	counter int32
 )
 
+func genMyRecord(id int32) *example.MyRecord {
+	return &example.MyRecord{
+		Key:    []byte(fmt.Sprintf("key-%s-%d", *clientName, id)),
+		Field1: []byte(fmt.Sprintf("field1-%s-%d", *clientName, id)),
+		Field2: fmt.Sprintf("field2-%s-%d", *clientName, id),
+		Field3: id,
+		Field4: int64(id),
+		Field5: float32(id),
+		Field6: float64(id),
+		Field7: id%2 == 0,
+	}
+}
+
 func doPublish(publisher *agent_client.PublishSession, id int) {
 	startTime := time.Now()
 	for {
@@ -49,58 +62,12 @@ func doPublish(publisher *agent_client.PublishSession, id int) {
 	log.Printf("Publisher %s-%d finished in %s", *clientName, id, elapsed)
 }
 
-type MyRecord struct {
-	Key    []byte
-	Field1 []byte
-	Field2 string
-	Field3 int32
-	Field4 int64
-	Field5 float32
-	Field6 float64
-	Field7 bool
-}
-
-func genMyRecord(id int32) *MyRecord {
-	return &MyRecord{
-		Key:    []byte(fmt.Sprintf("key-%s-%d", *clientName, id)),
-		Field1: []byte(fmt.Sprintf("field1-%s-%d", *clientName, id)),
-		Field2: fmt.Sprintf("field2-%s-%d", *clientName, id),
-		Field3: id,
-		Field4: int64(id),
-		Field5: float32(id),
-		Field6: float64(id),
-		Field7: id%2 == 0,
-	}
-}
-
-func (r *MyRecord) ToRecordValue() *schema_pb.RecordValue {
-	return schema.RecordBegin().
-		SetBytes("key", r.Key).
-		SetBytes("field1", r.Field1).
-		SetString("field2", r.Field2).
-		SetInt32("field3", r.Field3).
-		SetInt64("field4", r.Field4).
-		SetFloat("field5", r.Field5).
-		SetDouble("field6", r.Field6).
-		SetBool("field7", r.Field7).
-		RecordEnd()
-}
-
 func main() {
 	flag.Parse()
 
-	recordType := schema.RecordTypeBegin().
+	recordType := example.MyRecordType()
-		WithField("key", schema.TypeBytes).
-		WithField("field1", schema.TypeBytes).
-		WithField("field2", schema.TypeString).
-		WithField("field3", schema.TypeInt32).
-		WithField("field4", schema.TypeInt64).
-		WithField("field5", schema.TypeFloat).
-		WithField("field6", schema.TypeDouble).
-		WithField("field7", schema.TypeBoolean).
-		RecordTypeEnd()
 
-	session, err := agent_client.NewPublishSession("localhost:16777", schema.NewSchema(*namespace, *t, recordType), *partitionCount, *clientName)
+	session, err := agent_client.NewPublishSession(*agent, schema.NewSchema(*namespace, *t, recordType), *partitionCount, *clientName)
 	if err != nil {
 		log.Printf("failed to create session: %v", err)
 		return

other/mq_client_example/agent_sub_record/agent_sub_record.go

@@ -0,0 +1,62 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"github.com/seaweedfs/seaweedfs/other/mq_client_example/example"
+	"github.com/seaweedfs/seaweedfs/weed/mq/client/agent_client"
+	"github.com/seaweedfs/seaweedfs/weed/mq/topic"
+	"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
+	"github.com/seaweedfs/seaweedfs/weed/util"
+	"log"
+	"time"
+)
+
+var (
+	namespace         = flag.String("ns", "test", "namespace")
+	t                 = flag.String("topic", "test", "topic")
+	agent             = flag.String("agent", "localhost:16777", "mq agent address")
+	maxPartitionCount = flag.Int("maxPartitionCount", 3, "max partition count")
+	slidingWindowSize = flag.Int("slidingWindowSize", 1, "per partition concurrency")
+	timeAgo           = flag.Duration("timeAgo", 0, "start time before now. \"300ms\", \"1.5h\" or \"2h45m\". Valid time units are \"ns\", \"us\" (or \"µs\"), \"ms\", \"s\", \"m\", \"h\"")
+
+	clientId = flag.Uint("client_id", uint(util.RandomInt32()), "client id")
+)
+
+func main() {
+	flag.Parse()
+
+	// determine the start of the messages
+	var startTsNs int64
+	startType := schema_pb.OffsetType_RESUME_OR_EARLIEST
+	if *timeAgo > 0 {
+		startTsNs = time.Now().Add(-*timeAgo).UnixNano()
+		startType = schema_pb.OffsetType_EXACT_TS_NS
+	}
+
+	session, err := agent_client.NewSubscribeSession(*agent, &agent_client.SubscribeOption{
+		ConsumerGroup:           "test",
+		ConsumerGroupInstanceId: fmt.Sprintf("client-%d", *clientId),
+		Topic:                   topic.NewTopic(*namespace, *t),
+		OffsetType:              startType,
+		OffsetTsNs:              startTsNs,
+		Filter:                  "",
+		MaxSubscribedPartitions: int32(*maxPartitionCount),
+		SlidingWindowSize:       int32(*slidingWindowSize),
+	})
+	if err != nil {
+		log.Printf("new subscribe session: %v", err)
+		return
+	}
+	defer session.CloseSession()
+
+	counter := 0
+	session.SubscribeMessageRecord(func(key []byte, recordValue *schema_pb.RecordValue) {
+		counter++
+		record := example.FromRecordValue(recordValue)
+		fmt.Printf("%d %s %v\n", counter, string(key), record.Field2)
+	}, func() {
+		log.Printf("done received %d messages", counter)
+	})
+
+}

other/mq_client_example/example/my_record.go

@@ -0,0 +1,56 @@
+package example
+
+import (
+	"github.com/seaweedfs/seaweedfs/weed/mq/schema"
+	"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
+)
+
+type MyRecord struct {
+	Key    []byte
+	Field1 []byte
+	Field2 string
+	Field3 int32
+	Field4 int64
+	Field5 float32
+	Field6 float64
+	Field7 bool
+}
+
+func MyRecordType() *schema_pb.RecordType {
+	return schema.RecordTypeBegin().
+		WithField("key", schema.TypeBytes).
+		WithField("field1", schema.TypeBytes).
+		WithField("field2", schema.TypeString).
+		WithField("field3", schema.TypeInt32).
+		WithField("field4", schema.TypeInt64).
+		WithField("field5", schema.TypeFloat).
+		WithField("field6", schema.TypeDouble).
+		WithField("field7", schema.TypeBoolean).
+		RecordTypeEnd()
+}
+
+func (r *MyRecord) ToRecordValue() *schema_pb.RecordValue {
+	return schema.RecordBegin().
+		SetBytes("key", r.Key).
+		SetBytes("field1", r.Field1).
+		SetString("field2", r.Field2).
+		SetInt32("field3", r.Field3).
+		SetInt64("field4", r.Field4).
+		SetFloat("field5", r.Field5).
+		SetDouble("field6", r.Field6).
+		SetBool("field7", r.Field7).
+		RecordEnd()
+}
+
+func FromRecordValue(recordValue *schema_pb.RecordValue) *MyRecord {
+	return &MyRecord{
+		Key:    recordValue.Fields["key"].GetBytesValue(),
+		Field1: recordValue.Fields["field1"].GetBytesValue(),
+		Field2: recordValue.Fields["field2"].GetStringValue(),
+		Field3: recordValue.Fields["field3"].GetInt32Value(),
+		Field4: recordValue.Fields["field4"].GetInt64Value(),
+		Field5: recordValue.Fields["field5"].GetFloatValue(),
+		Field6: recordValue.Fields["field6"].GetDoubleValue(),
+		Field7: recordValue.Fields["field7"].GetBoolValue(),
+	}
+}

weed/Makefile

@@ -41,6 +41,10 @@ debug_mq:
 	go build -gcflags="all=-N -l"
 	dlv --listen=:2345 --headless=true --api-version=2 --accept-multiclient exec ./weed -- -v=4 mq.broker
 
+debug_mq_agent:
+	go build -gcflags="all=-N -l"
+	dlv --listen=:2346 --headless=true --api-version=2 --accept-multiclient exec ./weed -- -v=4 mq.agent -broker=localhost:17777
+
 debug_filer_copy:
 	go build -gcflags="all=-N -l"
 	dlv --listen=:2345 --headless=true --api-version=2 --accept-multiclient exec ./weed -- -v=4 filer.backup -filer=localhost:8888 -filerProxy -timeAgo=10h

weed/command/command.go

@@ -32,6 +32,7 @@ var Commands = []*Command{
 	cmdMaster,
 	cmdMasterFollower,
 	cmdMount,
+	cmdMqAgent,
 	cmdMqBroker,
 	cmdS3,
 	cmdScaffold,

weed/command/mq_agent.go

@@ -26,12 +26,12 @@ type MessageQueueAgentOptions struct {
 func init() {
 	cmdMqAgent.Run = runMqAgent // break init cycle
 	mqAgentOptions.brokersString = cmdMqAgent.Flag.String("broker", "localhost:17777", "comma-separated message queue brokers")
-	mqAgentOptions.ip = cmdMqAgent.Flag.String("ip", "localhost", "message queue agent host address")
+	mqAgentOptions.ip = cmdMqAgent.Flag.String("ip", "", "message queue agent host address")
 	mqAgentOptions.port = cmdMqAgent.Flag.Int("port", 16777, "message queue agent gRPC server port")
 }
 
 var cmdMqAgent = &Command{
-	UsageLine: "mq.agent [-port=6377] [-master=<ip:port>]",
+	UsageLine: "mq.agent [-port=16777] [-master=<ip:port>]",
 	Short:     "<WIP> start a message queue agent",
 	Long: `start a message queue agent
 
@@ -64,6 +64,7 @@ func (mqAgentOpt *MessageQueueAgentOptions) startQueueAgent() bool {
 	if err != nil {
 		glog.Fatalf("failed to listen on grpc port %d: %v", *mqAgentOpt.port, err)
 	}
+	glog.Infof("Start Seaweed Message Queue Agent on %s:%d", *mqAgentOpt.ip, *mqAgentOpt.port)
 	grpcS := pb.NewGrpcServer()
 	mq_agent_pb.RegisterSeaweedMessagingAgentServer(grpcS, agentServer)
 	reflection.Register(grpcS)

weed/mq/agent/agent_grpc_pub_session.go

@@ -7,13 +7,12 @@ import (
 	"github.com/seaweedfs/seaweedfs/weed/pb/mq_agent_pb"
 	"log/slog"
 	"math/rand/v2"
-	"time"
 )
 
 func (a *MessageQueueAgent) StartPublishSession(ctx context.Context, req *mq_agent_pb.StartPublishSessionRequest) (*mq_agent_pb.StartPublishSessionResponse, error) {
 	sessionId := rand.Int64()
 
-	topicPublisher := pub_client.NewTopicPublisher(
+	topicPublisher, err := pub_client.NewTopicPublisher(
 		&pub_client.PublisherConfiguration{
 			Topic:          topic.NewTopic(req.Topic.Namespace, req.Topic.Name),
 			PartitionCount: req.PartitionCount,
@@ -21,18 +20,11 @@ func (a *MessageQueueAgent) StartPublishSession(ctx context.Context, req *mq_age
 			PublisherName:  req.PublisherName,
 			RecordType:     req.RecordType,
 		})
+	if err != nil {
+		return nil, err
+	}
 
 	a.publishersLock.Lock()
-	// remove inactive publishers to avoid memory leak
-	for k, entry := range a.publishers {
-		if entry.lastActiveTsNs == 0 {
-			// this is an active session
-			continue
-		}
-		if time.Unix(0, entry.lastActiveTsNs).Add(10 * time.Hour).Before(time.Now()) {
-			delete(a.publishers, k)
-		}
-	}
 	a.publishers[SessionId(sessionId)] = &SessionEntry[*pub_client.TopicPublisher]{
 		entry: topicPublisher,
 	}

weed/mq/agent/agent_grpc_publish.go

@@ -3,24 +3,25 @@ package agent
 import (
 	"fmt"
 	"github.com/seaweedfs/seaweedfs/weed/pb/mq_agent_pb"
-	"time"
 )
 
-func (a *MessageQueueAgent) PublishRecordRequest(stream mq_agent_pb.SeaweedMessagingAgent_PublishRecordServer) error {
+func (a *MessageQueueAgent) PublishRecord(stream mq_agent_pb.SeaweedMessagingAgent_PublishRecordServer) error {
 	m, err := stream.Recv()
 	if err != nil {
 		return err
 	}
+	sessionId := SessionId(m.SessionId)
 	a.publishersLock.RLock()
-	publisherEntry, found := a.publishers[SessionId(m.SessionId)]
+	publisherEntry, found := a.publishers[sessionId]
 	a.publishersLock.RUnlock()
 	if !found {
-		return fmt.Errorf("publish session id %d not found", m.SessionId)
+		return fmt.Errorf("publish session id %d not found", sessionId)
 	}
 	defer func() {
-		publisherEntry.lastActiveTsNs = time.Now().UnixNano()
+		a.publishersLock.Lock()
+		delete(a.publishers, sessionId)
+		a.publishersLock.Unlock()
 	}()
-	publisherEntry.lastActiveTsNs = 0
 
 	if m.Value != nil {
 		if err := publisherEntry.entry.PublishRecord(m.Key, m.Value); err != nil {
@@ -29,7 +30,7 @@ func (a *MessageQueueAgent) PublishRecordRequest(stream mq_agent_pb.SeaweedMessa
 	}
 
 	for {
-		m, err := stream.Recv()
+		m, err = stream.Recv()
 		if err != nil {
 			return err
 		}

weed/mq/agent/agent_grpc_sub_session.go

@@ -1,57 +0,0 @@
-package agent
-
-import (
-	"context"
-	"github.com/seaweedfs/seaweedfs/weed/mq/client/sub_client"
-	"github.com/seaweedfs/seaweedfs/weed/mq/topic"
-	"github.com/seaweedfs/seaweedfs/weed/pb/mq_agent_pb"
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/credentials/insecure"
-	"math/rand/v2"
-	"time"
-)
-
-func (a *MessageQueueAgent) StartSubscribeSession(ctx context.Context, req *mq_agent_pb.StartSubscribeSessionRequest) (*mq_agent_pb.StartSubscribeSessionResponse, error) {
-	sessionId := rand.Int64()
-
-	subscriberConfig := &sub_client.SubscriberConfiguration{
-		ConsumerGroup:           req.ConsumerGroup,
-		ConsumerGroupInstanceId: req.ConsumerGroupInstanceId,
-		GrpcDialOption:          grpc.WithTransportCredentials(insecure.NewCredentials()),
-		MaxPartitionCount:       req.MaxSubscribedPartitions,
-		SlidingWindowSize:       req.SlidingWindowSize,
-	}
-
-	contentConfig := &sub_client.ContentConfiguration{
-		Topic:            topic.FromPbTopic(req.Topic),
-		Filter:           req.Filter,
-		PartitionOffsets: req.PartitionOffsets,
-	}
-
-	topicSubscriber := sub_client.NewTopicSubscriber(
-		a.brokersList(),
-		subscriberConfig,
-		contentConfig,
-		make(chan sub_client.KeyedOffset, 1024),
-	)
-
-	a.subscribersLock.Lock()
-	// remove inactive publishers to avoid memory leak
-	for k, entry := range a.subscribers {
-		if entry.lastActiveTsNs == 0 {
-			// this is an active session
-			continue
-		}
-		if time.Unix(0, entry.lastActiveTsNs).Add(10 * time.Hour).Before(time.Now()) {
-			delete(a.subscribers, k)
-		}
-	}
-	a.subscribers[SessionId(sessionId)] = &SessionEntry[*sub_client.TopicSubscriber]{
-		entry: topicSubscriber,
-	}
-	a.subscribersLock.Unlock()
-
-	return &mq_agent_pb.StartSubscribeSessionResponse{
-		SessionId: sessionId,
-	}, nil
-}

weed/mq/agent/agent_grpc_subscribe.go

@@ -1,59 +1,59 @@
 package agent
 
 import (
-	"fmt"
+	"context"
 	"github.com/seaweedfs/seaweedfs/weed/glog"
 	"github.com/seaweedfs/seaweedfs/weed/mq/client/sub_client"
+	"github.com/seaweedfs/seaweedfs/weed/mq/topic"
 	"github.com/seaweedfs/seaweedfs/weed/pb/mq_agent_pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
+	"github.com/seaweedfs/seaweedfs/weed/util"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/protobuf/proto"
-	"time"
 )
 
-func (a *MessageQueueAgent) SubscribeRecordRequest(stream mq_agent_pb.SeaweedMessagingAgent_SubscribeRecordServer) error {
+func (a *MessageQueueAgent) SubscribeRecord(stream mq_agent_pb.SeaweedMessagingAgent_SubscribeRecordServer) error {
 	// the first message is the subscribe request
 	// it should only contain the session id
-	m, err := stream.Recv()
+	initMessage, err := stream.Recv()
 	if err != nil {
 		return err
 	}
-	a.subscribersLock.RLock()
+
-	subscriberEntry, found := a.subscribers[SessionId(m.SessionId)]
+	subscriber := a.handleInitSubscribeRecordRequest(stream.Context(), initMessage.Init)
-	a.subscribersLock.RUnlock()
-	if !found {
-		return fmt.Errorf("subscribe session id %d not found", m.SessionId)
-	}
-	defer func() {
-		subscriberEntry.lastActiveTsNs = time.Now().UnixNano()
-	}()
-	subscriberEntry.lastActiveTsNs = 0
 
 	var lastErr error
-	subscriberEntry.entry.SetOnDataMessageFn(func(m *mq_pb.SubscribeMessageResponse_Data) {
+	executors := util.NewLimitedConcurrentExecutor(int(subscriber.SubscriberConfig.SlidingWindowSize))
-		record := &schema_pb.RecordValue{}
+	subscriber.SetOnDataMessageFn(func(m *mq_pb.SubscribeMessageResponse_Data) {
-		err := proto.Unmarshal(m.Data.Value, record)
+		executors.Execute(func() {
-		if err != nil {
+			record := &schema_pb.RecordValue{}
-			if lastErr == nil {
+			err := proto.Unmarshal(m.Data.Value, record)
-				lastErr = err
+			if err != nil {
+				glog.V(0).Infof("unmarshal record value: %v", err)
+				if lastErr == nil {
+					lastErr = err
+				}
+				return
 			}
-			return
+			if sendErr := stream.Send(&mq_agent_pb.SubscribeRecordResponse{
-		}
+				Key:   m.Data.Key,
-		if sendErr := stream.Send(&mq_agent_pb.SubscribeRecordResponse{
+				Value: record,
-			Key:   m.Data.Key,
+				TsNs:  m.Data.TsNs,
-			Value: record,
+			}); sendErr != nil {
-			TsNs:  m.Data.TsNs,
+				glog.V(0).Infof("send record: %v", sendErr)
-		}); sendErr != nil {
+				if lastErr == nil {
-			if lastErr == nil {
+					lastErr = sendErr
-				lastErr = sendErr
+				}
 			}
-		}
+		})
 	})
 
 	go func() {
-		subErr := subscriberEntry.entry.Subscribe()
+		subErr := subscriber.Subscribe()
 		if subErr != nil {
-			glog.V(0).Infof("subscriber %d subscribe: %v", m.SessionId, subErr)
+			glog.V(0).Infof("subscriber %s subscribe: %v", subscriber.SubscriberConfig.String(), subErr)
 			if lastErr == nil {
 				lastErr = subErr
 			}
@@ -63,13 +63,43 @@ func (a *MessageQueueAgent) SubscribeRecordRequest(stream mq_agent_pb.SeaweedMes
 	for {
 		m, err := stream.Recv()
 		if err != nil {
+			glog.V(0).Infof("subscriber %s receive: %v", subscriber.SubscriberConfig.String(), err)
 			return err
 		}
 		if m != nil {
-			subscriberEntry.entry.PartitionOffsetChan <- sub_client.KeyedOffset{
+			subscriber.PartitionOffsetChan <- sub_client.KeyedOffset{
 				Key:    m.AckKey,
 				Offset: m.AckSequence,
 			}
 		}
 	}
 }
+
+func (a *MessageQueueAgent) handleInitSubscribeRecordRequest(ctx context.Context, req *mq_agent_pb.SubscribeRecordRequest_InitSubscribeRecordRequest) *sub_client.TopicSubscriber {
+
+	subscriberConfig := &sub_client.SubscriberConfiguration{
+		ConsumerGroup:           req.ConsumerGroup,
+		ConsumerGroupInstanceId: req.ConsumerGroupInstanceId,
+		GrpcDialOption:          grpc.WithTransportCredentials(insecure.NewCredentials()),
+		MaxPartitionCount:       req.MaxSubscribedPartitions,
+		SlidingWindowSize:       req.SlidingWindowSize,
+	}
+
+	contentConfig := &sub_client.ContentConfiguration{
+		Topic:            topic.FromPbTopic(req.Topic),
+		Filter:           req.Filter,
+		PartitionOffsets: req.PartitionOffsets,
+		OffsetType:       req.OffsetType,
+		OffsetTsNs:       req.OffsetTsNs,
+	}
+
+	topicSubscriber := sub_client.NewTopicSubscriber(
+		ctx,
+		a.brokersList(),
+		subscriberConfig,
+		contentConfig,
+		make(chan sub_client.KeyedOffset, 1024),
+	)
+
+	return topicSubscriber
+}

weed/mq/agent/agent_server.go

@@ -11,8 +11,7 @@ import (
 
 type SessionId int64
 type SessionEntry[T any] struct {
-	entry          T
+	entry T
-	lastActiveTsNs int64
 }
 
 type MessageQueueAgentOptions struct {
@@ -32,11 +31,15 @@ type MessageQueueAgent struct {
 
 func NewMessageQueueAgent(option *MessageQueueAgentOptions, grpcDialOption grpc.DialOption) *MessageQueueAgent {
 
-	// check masters to list all brokers
+	// initialize brokers which may change later
+	var brokers []pb.ServerAddress
+	for _, broker := range option.SeedBrokers {
+		brokers = append(brokers, broker)
+	}
 
 	return &MessageQueueAgent{
 		option:         option,
-		brokers:        []pb.ServerAddress{},
+		brokers:        brokers,
 		grpcDialOption: grpcDialOption,
 		publishers:     make(map[SessionId]*SessionEntry[*pub_client.TopicPublisher]),
 		subscribers:    make(map[SessionId]*SessionEntry[*sub_client.TopicSubscriber]),

weed/mq/broker/broker_grpc_sub.go

@@ -68,7 +68,9 @@ func (b *MessageQueueBroker) SubscribeMessage(stream mq_pb.SeaweedMessaging_Subs
 		} else {
 			defer func() {
 				println("closing SubscribeFollowMe connection", follower)
-				subscribeFollowMeStream.CloseSend()
+				if subscribeFollowMeStream != nil {
+					subscribeFollowMeStream.CloseSend()
+				}
 				// followerGrpcConnection.Close()
 			}()
 			followerClient := mq_pb.NewSeaweedMessagingClient(followerGrpcConnection)
@@ -142,7 +144,9 @@ func (b *MessageQueueBroker) SubscribeMessage(stream mq_pb.SeaweedMessaging_Subs
 					Close: &mq_pb.SubscribeFollowMeRequest_CloseMessage{},
 				},
 			}); err != nil {
-				glog.Errorf("Error sending close to follower: %v", err)
+				if err != io.EOF {
+					glog.Errorf("Error sending close to follower: %v", err)
+				}
 			}
 		}
 	}()
@@ -178,6 +182,19 @@ func (b *MessageQueueBroker) SubscribeMessage(stream mq_pb.SeaweedMessaging_Subs
 
 		for imt.IsInflight(logEntry.Key) {
 			time.Sleep(137 * time.Millisecond)
+			// Check if the client has disconnected by monitoring the context
+			select {
+			case <-ctx.Done():
+				err := ctx.Err()
+				if err == context.Canceled {
+					// Client disconnected
+					return false, nil
+				}
+				glog.V(0).Infof("Subscriber %s disconnected: %v", clientName, err)
+				return false, nil
+			default:
+				// Continue processing the request
+			}
 		}
 		if logEntry.Key != nil {
 			imt.EnflightMessage(logEntry.Key, logEntry.TsNs)
@@ -204,20 +221,35 @@ func (b *MessageQueueBroker) getRequestPosition(initMessage *mq_pb.SubscribeMess
 		return
 	}
 	offset := initMessage.GetPartitionOffset()
-	if offset.StartTsNs != 0 {
+	offsetType := initMessage.OffsetType
+
+	// reset to earliest or latest
+	if offsetType == schema_pb.OffsetType_RESET_TO_EARLIEST {
+		startPosition = log_buffer.NewMessagePosition(1, -3)
+		return
+	}
+	if offsetType == schema_pb.OffsetType_RESET_TO_LATEST {
+		startPosition = log_buffer.NewMessagePosition(time.Now().UnixNano(), -4)
+		return
+	}
+
+	// use the exact timestamp
+	if offsetType == schema_pb.OffsetType_EXACT_TS_NS {
 		startPosition = log_buffer.NewMessagePosition(offset.StartTsNs, -2)
 		return
 	}
+
+	// try to resume
 	if storedOffset, err := b.readConsumerGroupOffset(initMessage); err == nil {
 		glog.V(0).Infof("resume from saved offset %v %v %v: %v", initMessage.Topic, initMessage.PartitionOffset.Partition, initMessage.ConsumerGroup, storedOffset)
 		startPosition = log_buffer.NewMessagePosition(storedOffset, -2)
 		return
 	}
 
-	if offset.StartType == schema_pb.PartitionOffsetStartType_EARLIEST {
+	if offsetType == schema_pb.OffsetType_RESUME_OR_EARLIEST {
-		startPosition = log_buffer.NewMessagePosition(1, -3)
+		startPosition = log_buffer.NewMessagePosition(1, -5)
-	} else if offset.StartType == schema_pb.PartitionOffsetStartType_LATEST {
+	} else if offsetType == schema_pb.OffsetType_RESUME_OR_LATEST {
-		startPosition = log_buffer.NewMessagePosition(time.Now().UnixNano(), -4)
+		startPosition = log_buffer.NewMessagePosition(time.Now().UnixNano(), -6)
 	}
 	return
 }

weed/mq/client/agent_client/agent_publish.go

@@ -1,14 +0,0 @@
-package agent_client
-
-import (
-	"github.com/seaweedfs/seaweedfs/weed/pb/mq_agent_pb"
-	"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
-)
-
-func (a *PublishSession) PublishMessageRecord(key []byte, record *schema_pb.RecordValue) error {
-	return a.stream.Send(&mq_agent_pb.PublishRecordRequest{
-		SessionId: a.sessionId,
-		Key:       key,
-		Value:     record,
-	})
-}

weed/mq/client/agent_client/agent_subscribe.go

@@ -1,17 +0,0 @@
-package agent_client
-
-import (
-	"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
-)
-
-func (a *SubscribeSession) SubscribeMessageRecord(
-	onEachMessageFn func(key []byte, record *schema_pb.RecordValue),
-	onCompletionFn func()) error {
-	for {
-		resp, err := a.stream.Recv()
-		if err != nil {
-			return err
-		}
-		onEachMessageFn(resp.Key, resp.Value)
-	}
-}

weed/mq/client/agent_client/publish_session.go

@@ -4,10 +4,10 @@ import (
 	"context"
 	"fmt"
 	"github.com/seaweedfs/seaweedfs/weed/mq/schema"
-	"github.com/seaweedfs/seaweedfs/weed/pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/mq_agent_pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
 	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
 )
 
 type PublishSession struct {
@@ -15,13 +15,12 @@ type PublishSession struct {
 	partitionCount int
 	publisherName  string
 	stream         grpc.BidiStreamingClient[mq_agent_pb.PublishRecordRequest, mq_agent_pb.PublishRecordResponse]
-	sessionId      int64
 }
 
 func NewPublishSession(agentAddress string, topicSchema *schema.Schema, partitionCount int, publisherName string) (*PublishSession, error) {
 
 	// call local agent grpc server to create a new session
-	clientConn, err := pb.GrpcDial(context.Background(), agentAddress, true, grpc.WithInsecure())
+	clientConn, err := grpc.NewClient(agentAddress, grpc.WithTransportCredentials(insecure.NewCredentials()))
 	if err != nil {
 		return nil, fmt.Errorf("dial agent server %s: %v", agentAddress, err)
 	}
@@ -48,12 +47,17 @@ func NewPublishSession(agentAddress string, topicSchema *schema.Schema, partitio
 		return nil, fmt.Errorf("publish record: %v", err)
 	}
 
+	if err = stream.Send(&mq_agent_pb.PublishRecordRequest{
+		SessionId: resp.SessionId,
+	}); err != nil {
+		return nil, fmt.Errorf("send session id: %v", err)
+	}
+
 	return &PublishSession{
 		schema:         topicSchema,
 		partitionCount: partitionCount,
 		publisherName:  publisherName,
 		stream:         stream,
-		sessionId:      resp.SessionId,
 	}, nil
 }
 
@@ -68,3 +72,10 @@ func (a *PublishSession) CloseSession() error {
 	a.schema = nil
 	return err
 }
+
+func (a *PublishSession) PublishMessageRecord(key []byte, record *schema_pb.RecordValue) error {
+	return a.stream.Send(&mq_agent_pb.PublishRecordRequest{
+		Key:   key,
+		Value: record,
+	})
+}

weed/mq/client/agent_client/subscribe_session.go

@@ -4,50 +4,48 @@ import (
 	"context"
 	"fmt"
 	"github.com/seaweedfs/seaweedfs/weed/mq/topic"
-	"github.com/seaweedfs/seaweedfs/weed/pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/mq_agent_pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
 	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
 )
 
 type SubscribeOption struct {
 	ConsumerGroup           string
 	ConsumerGroupInstanceId string
 	Topic                   topic.Topic
+	OffsetType              schema_pb.OffsetType
+	OffsetTsNs              int64
 	Filter                  string
 	MaxSubscribedPartitions int32
-	PerPartitionConcurrency int32
+	SlidingWindowSize       int32
 }
 
 type SubscribeSession struct {
-	Option    *SubscribeOption
+	Option *SubscribeOption
-	stream    grpc.BidiStreamingClient[mq_agent_pb.SubscribeRecordRequest, mq_agent_pb.SubscribeRecordResponse]
+	stream grpc.BidiStreamingClient[mq_agent_pb.SubscribeRecordRequest, mq_agent_pb.SubscribeRecordResponse]
-	sessionId int64
 }
 
 func NewSubscribeSession(agentAddress string, option *SubscribeOption) (*SubscribeSession, error) {
 	// call local agent grpc server to create a new session
-	clientConn, err := pb.GrpcDial(context.Background(), agentAddress, true, grpc.WithInsecure())
+	clientConn, err := grpc.NewClient(agentAddress, grpc.WithTransportCredentials(insecure.NewCredentials()))
 	if err != nil {
 		return nil, fmt.Errorf("dial agent server %s: %v", agentAddress, err)
 	}
 	agentClient := mq_agent_pb.NewSeaweedMessagingAgentClient(clientConn)
 
-	resp, err := agentClient.StartSubscribeSession(context.Background(), &mq_agent_pb.StartSubscribeSessionRequest{
+	initRequest := &mq_agent_pb.SubscribeRecordRequest_InitSubscribeRecordRequest{
 		ConsumerGroup:           option.ConsumerGroup,
 		ConsumerGroupInstanceId: option.ConsumerGroupInstanceId,
 		Topic: &schema_pb.Topic{
 			Namespace: option.Topic.Namespace,
 			Name:      option.Topic.Name,
 		},
+		OffsetType:              option.OffsetType,
+		OffsetTsNs:              option.OffsetTsNs,
 		MaxSubscribedPartitions: option.MaxSubscribedPartitions,
 		Filter:                  option.Filter,
-	})
+		SlidingWindowSize:       option.SlidingWindowSize,
-	if err != nil {
-		return nil, err
-	}
-	if resp.Error != "" {
-		return nil, fmt.Errorf("start subscribe session: %v", resp.Error)
 	}
 
 	stream, err := agentClient.SubscribeRecord(context.Background())
@@ -55,9 +53,35 @@ func NewSubscribeSession(agentAddress string, option *SubscribeOption) (*Subscri
 		return nil, fmt.Errorf("subscribe record: %v", err)
 	}
 
+	if err = stream.Send(&mq_agent_pb.SubscribeRecordRequest{
+		Init: initRequest,
+	}); err != nil {
+		return nil, fmt.Errorf("send session id: %v", err)
+	}
+
 	return &SubscribeSession{
-		Option:    option,
+		Option: option,
-		stream:    stream,
+		stream: stream,
-		sessionId: resp.SessionId,
 	}, nil
 }
+
+func (s *SubscribeSession) CloseSession() error {
+	err := s.stream.CloseSend()
+	return err
+}
+
+func (a *SubscribeSession) SubscribeMessageRecord(
+	onEachMessageFn func(key []byte, record *schema_pb.RecordValue),
+	onCompletionFn func()) error {
+	for {
+		resp, err := a.stream.Recv()
+		if err != nil {
+			return err
+		}
+		onEachMessageFn(resp.Key, resp.Value)
+	}
+	if onCompletionFn != nil {
+		onCompletionFn()
+	}
+	return nil
+}

weed/mq/client/cmd/weed_pub_kv/publisher_kv.go

@@ -1,78 +0,0 @@
-package main
-
-import (
-	"flag"
-	"fmt"
-	"github.com/seaweedfs/seaweedfs/weed/mq/client/pub_client"
-	"github.com/seaweedfs/seaweedfs/weed/mq/topic"
-	util_http "github.com/seaweedfs/seaweedfs/weed/util/http"
-	"log"
-	"strings"
-	"sync"
-	"time"
-)
-
-var (
-	messageCount   = flag.Int("n", 1000, "message count")
-	concurrency    = flag.Int("c", 4, "concurrent publishers")
-	partitionCount = flag.Int("p", 6, "partition count")
-
-	clientName = flag.String("client", "c1", "client name")
-
-	namespace   = flag.String("ns", "test", "namespace")
-	t           = flag.String("t", "test", "t")
-	seedBrokers = flag.String("brokers", "localhost:17777", "seed brokers")
-)
-
-func doPublish(publisher *pub_client.TopicPublisher, id int) {
-	startTime := time.Now()
-	for i := 0; i < *messageCount / *concurrency; i++ {
-		// Simulate publishing a message
-		key := []byte(fmt.Sprintf("key-%s-%d-%d", *clientName, id, i))
-		value := []byte(fmt.Sprintf("value-%s-%d-%d", *clientName, id, i))
-		if err := publisher.Publish(key, value); err != nil {
-			fmt.Println(err)
-			break
-		}
-		time.Sleep(time.Second)
-		// println("Published", string(key), string(value))
-	}
-	if err := publisher.FinishPublish(); err != nil {
-		fmt.Println(err)
-	}
-	elapsed := time.Since(startTime)
-	log.Printf("Publisher %s-%d finished in %s", *clientName, id, elapsed)
-}
-
-func main() {
-	flag.Parse()
-	util_http.InitGlobalHttpClient()
-
-	config := &pub_client.PublisherConfiguration{
-		Topic:          topic.NewTopic(*namespace, *t),
-		PartitionCount: int32(*partitionCount),
-		Brokers:        strings.Split(*seedBrokers, ","),
-		PublisherName:  *clientName,
-	}
-	publisher := pub_client.NewTopicPublisher(config)
-
-	startTime := time.Now()
-
-	var wg sync.WaitGroup
-	// Start multiple publishers
-	for i := 0; i < *concurrency; i++ {
-		wg.Add(1)
-		go func(id int) {
-			defer wg.Done()
-			doPublish(publisher, id)
-		}(i)
-	}
-
-	// Wait for all publishers to finish
-	wg.Wait()
-	elapsed := time.Since(startTime)
-	publisher.Shutdown()
-
-	log.Printf("Published %d messages in %s (%.2f msg/s)", *messageCount, elapsed, float64(*messageCount)/elapsed.Seconds())
-
-}

weed/mq/client/cmd/weed_pub_record/publisher_record.go

@@ -1,138 +0,0 @@
-package main
-
-import (
-	"flag"
-	"fmt"
-	"github.com/seaweedfs/seaweedfs/weed/mq/client/pub_client"
-	"github.com/seaweedfs/seaweedfs/weed/mq/schema"
-	"github.com/seaweedfs/seaweedfs/weed/mq/topic"
-	"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
-	util_http "github.com/seaweedfs/seaweedfs/weed/util/http"
-	"log"
-	"strings"
-	"sync"
-	"sync/atomic"
-	"time"
-)
-
-var (
-	messageCount   = flag.Int("n", 1000, "message count")
-	messageDelay   = flag.Duration("d", time.Second, "delay between messages")
-	concurrency    = flag.Int("c", 4, "concurrent publishers")
-	partitionCount = flag.Int("p", 6, "partition count")
-
-	clientName = flag.String("client", "c1", "client name")
-
-	namespace   = flag.String("ns", "test", "namespace")
-	t           = flag.String("t", "test", "t")
-	seedBrokers = flag.String("brokers", "localhost:17777", "seed brokers")
-
-	counter int32
-)
-
-func doPublish(publisher *pub_client.TopicPublisher, id int) {
-	startTime := time.Now()
-	for {
-		i := atomic.AddInt32(&counter, 1)
-		if i > int32(*messageCount) {
-			break
-		}
-		// Simulate publishing a message
-		myRecord := genMyRecord(int32(i))
-		if err := publisher.PublishRecord(myRecord.Key, myRecord.ToRecordValue()); err != nil {
-			fmt.Println(err)
-			break
-		}
-		if *messageDelay > 0 {
-			time.Sleep(*messageDelay)
-			fmt.Printf("sent %+v\n", string(myRecord.Key))
-		}
-	}
-	if err := publisher.FinishPublish(); err != nil {
-		fmt.Println(err)
-	}
-	elapsed := time.Since(startTime)
-	log.Printf("Publisher %s-%d finished in %s", *clientName, id, elapsed)
-}
-
-type MyRecord struct {
-	Key    []byte
-	Field1 []byte
-	Field2 string
-	Field3 int32
-	Field4 int64
-	Field5 float32
-	Field6 float64
-	Field7 bool
-}
-
-func genMyRecord(id int32) *MyRecord {
-	return &MyRecord{
-		Key:    []byte(fmt.Sprintf("key-%s-%d", *clientName, id)),
-		Field1: []byte(fmt.Sprintf("field1-%s-%d", *clientName, id)),
-		Field2: fmt.Sprintf("field2-%s-%d", *clientName, id),
-		Field3: id,
-		Field4: int64(id),
-		Field5: float32(id),
-		Field6: float64(id),
-		Field7: id%2 == 0,
-	}
-}
-
-func (r *MyRecord) ToRecordValue() *schema_pb.RecordValue {
-	return schema.RecordBegin().
-		SetBytes("key", r.Key).
-		SetBytes("field1", r.Field1).
-		SetString("field2", r.Field2).
-		SetInt32("field3", r.Field3).
-		SetInt64("field4", r.Field4).
-		SetFloat("field5", r.Field5).
-		SetDouble("field6", r.Field6).
-		SetBool("field7", r.Field7).
-		RecordEnd()
-}
-
-func main() {
-	flag.Parse()
-	util_http.InitGlobalHttpClient()
-
-	recordType := schema.RecordTypeBegin().
-		WithField("key", schema.TypeBytes).
-		WithField("field1", schema.TypeBytes).
-		WithField("field2", schema.TypeString).
-		WithField("field3", schema.TypeInt32).
-		WithField("field4", schema.TypeInt64).
-		WithField("field5", schema.TypeFloat).
-		WithField("field6", schema.TypeDouble).
-		WithField("field7", schema.TypeBoolean).
-		RecordTypeEnd()
-
-	config := &pub_client.PublisherConfiguration{
-		Topic:          topic.NewTopic(*namespace, *t),
-		PartitionCount: int32(*partitionCount),
-		Brokers:        strings.Split(*seedBrokers, ","),
-		PublisherName:  *clientName,
-		RecordType:     recordType,
-	}
-	publisher := pub_client.NewTopicPublisher(config)
-
-	startTime := time.Now()
-
-	var wg sync.WaitGroup
-	// Start multiple publishers
-	for i := 0; i < *concurrency; i++ {
-		wg.Add(1)
-		go func(id int) {
-			defer wg.Done()
-			doPublish(publisher, id)
-		}(i)
-	}
-
-	// Wait for all publishers to finish
-	wg.Wait()
-	elapsed := time.Since(startTime)
-	publisher.Shutdown()
-
-	log.Printf("Published %d messages in %s (%.2f msg/s)", *messageCount, elapsed, float64(*messageCount)/elapsed.Seconds())
-
-}

weed/mq/client/cmd/weed_sub_kv/subscriber_kv.go

@@ -1,64 +0,0 @@
-package main
-
-import (
-	"flag"
-	"fmt"
-	"github.com/seaweedfs/seaweedfs/weed/glog"
-	"github.com/seaweedfs/seaweedfs/weed/mq/client/sub_client"
-	"github.com/seaweedfs/seaweedfs/weed/mq/topic"
-	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
-	"github.com/seaweedfs/seaweedfs/weed/util"
-	util_http "github.com/seaweedfs/seaweedfs/weed/util/http"
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/credentials/insecure"
-	"strings"
-)
-
-var (
-	namespace               = flag.String("ns", "test", "namespace")
-	t                       = flag.String("topic", "test", "topic")
-	seedBrokers             = flag.String("brokers", "localhost:17777", "seed brokers")
-	maxPartitionCount       = flag.Int("maxPartitionCount", 3, "max partition count")
-	perPartitionConcurrency = flag.Int("perPartitionConcurrency", 1, "per partition concurrency")
-
-	clientId = flag.Uint("client_id", uint(util.RandomInt32()), "client id")
-)
-
-func main() {
-	flag.Parse()
-	util_http.InitGlobalHttpClient()
-
-	subscriberConfig := &sub_client.SubscriberConfiguration{
-		ConsumerGroup:           "test",
-		ConsumerGroupInstanceId: fmt.Sprintf("client-%d", *clientId),
-		GrpcDialOption:          grpc.WithTransportCredentials(insecure.NewCredentials()),
-		MaxPartitionCount:       int32(*maxPartitionCount),
-		SlidingWindowSize:       int32(*perPartitionConcurrency),
-	}
-
-	contentConfig := &sub_client.ContentConfiguration{
-		Topic:  topic.NewTopic(*namespace, *t),
-		Filter: "",
-	}
-
-	brokers := strings.Split(*seedBrokers, ",")
-	subscriber := sub_client.NewTopicSubscriber(brokers, subscriberConfig, contentConfig, make(chan sub_client.KeyedOffset, 1024))
-
-	counter := 0
-	executors := util.NewLimitedConcurrentExecutor(int(subscriberConfig.SlidingWindowSize))
-	subscriber.SetOnDataMessageFn(func(m *mq_pb.SubscribeMessageResponse_Data) {
-		executors.Execute(func() {
-			counter++
-			println(string(m.Data.Key), "=>", string(m.Data.Value), counter)
-		})
-	})
-
-	subscriber.SetCompletionFunc(func() {
-		glog.V(0).Infof("done received %d messages", counter)
-	})
-
-	if err := subscriber.Subscribe(); err != nil {
-		fmt.Println(err)
-	}
-
-}

weed/mq/client/cmd/weed_sub_record/subscriber_record.go

@@ -1,99 +0,0 @@
-package main
-
-import (
-	"flag"
-	"fmt"
-	"github.com/seaweedfs/seaweedfs/weed/glog"
-	"github.com/seaweedfs/seaweedfs/weed/mq/client/sub_client"
-	"github.com/seaweedfs/seaweedfs/weed/mq/topic"
-	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
-	"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
-	"github.com/seaweedfs/seaweedfs/weed/util"
-	util_http "github.com/seaweedfs/seaweedfs/weed/util/http"
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/credentials/insecure"
-	"google.golang.org/protobuf/proto"
-	"strings"
-	"time"
-)
-
-var (
-	namespace               = flag.String("ns", "test", "namespace")
-	t                       = flag.String("topic", "test", "topic")
-	seedBrokers             = flag.String("brokers", "localhost:17777", "seed brokers")
-	maxPartitionCount       = flag.Int("maxPartitionCount", 3, "max partition count")
-	perPartitionConcurrency = flag.Int("perPartitionConcurrency", 1, "per partition concurrency")
-	timeAgo                 = flag.Duration("timeAgo", 1*time.Hour, "start time before now. \"300ms\", \"1.5h\" or \"2h45m\". Valid time units are \"ns\", \"us\" (or \"µs\"), \"ms\", \"s\", \"m\", \"h\"")
-
-	clientId = flag.Uint("client_id", uint(util.RandomInt32()), "client id")
-)
-
-type MyRecord struct {
-	Key    []byte
-	Field1 []byte
-	Field2 string
-	Field3 int32
-	Field4 int64
-	Field5 float32
-	Field6 float64
-	Field7 bool
-}
-
-func FromSchemaRecordValue(recordValue *schema_pb.RecordValue) *MyRecord {
-	return &MyRecord{
-		Key:    recordValue.Fields["key"].GetBytesValue(),
-		Field1: recordValue.Fields["field1"].GetBytesValue(),
-		Field2: recordValue.Fields["field2"].GetStringValue(),
-		Field3: recordValue.Fields["field3"].GetInt32Value(),
-		Field4: recordValue.Fields["field4"].GetInt64Value(),
-		Field5: recordValue.Fields["field5"].GetFloatValue(),
-		Field6: recordValue.Fields["field6"].GetDoubleValue(),
-		Field7: recordValue.Fields["field7"].GetBoolValue(),
-	}
-}
-
-func main() {
-	flag.Parse()
-	util_http.InitGlobalHttpClient()
-
-	subscriberConfig := &sub_client.SubscriberConfiguration{
-		ConsumerGroup:           "test",
-		ConsumerGroupInstanceId: fmt.Sprintf("client-%d", *clientId),
-		GrpcDialOption:          grpc.WithTransportCredentials(insecure.NewCredentials()),
-		MaxPartitionCount:       int32(*maxPartitionCount),
-		SlidingWindowSize:       int32(*perPartitionConcurrency),
-	}
-
-	contentConfig := &sub_client.ContentConfiguration{
-		Topic:  topic.NewTopic(*namespace, *t),
-		Filter: "",
-		// StartTime: time.Now().Add(-*timeAgo),
-	}
-
-	brokers := strings.Split(*seedBrokers, ",")
-	subscriber := sub_client.NewTopicSubscriber(brokers, subscriberConfig, contentConfig, make(chan sub_client.KeyedOffset, 1024))
-
-	counter := 0
-	executors := util.NewLimitedConcurrentExecutor(int(subscriberConfig.SlidingWindowSize))
-	subscriber.SetOnDataMessageFn(func(m *mq_pb.SubscribeMessageResponse_Data) {
-		executors.Execute(func() {
-			counter++
-			record := &schema_pb.RecordValue{}
-			err := proto.Unmarshal(m.Data.Value, record)
-			if err != nil {
-				fmt.Printf("unmarshal record value: %v\n", err)
-			} else {
-				fmt.Printf("%s %d: %v\n", string(m.Data.Key), len(m.Data.Value), record)
-			}
-		})
-	})
-
-	subscriber.SetCompletionFunc(func() {
-		glog.V(0).Infof("done received %d messages", counter)
-	})
-
-	if err := subscriber.Subscribe(); err != nil {
-		fmt.Println(err)
-	}
-
-}

weed/mq/client/pub_client/publisher.go

@@ -34,8 +34,8 @@ type TopicPublisher struct {
 	jobs             []*EachPartitionPublishJob
 }
 
-func NewTopicPublisher(config *PublisherConfiguration) *TopicPublisher {
+func NewTopicPublisher(config *PublisherConfiguration) (tp *TopicPublisher, err error) {
-	tp := &TopicPublisher{
+	tp = &TopicPublisher{
 		partition2Buffer: interval.NewSearchTree[*buffered_queue.BufferedQueue[*mq_pb.DataMessage]](func(a, b int32) int {
 			return int(a - b)
 		}),
@@ -46,7 +46,7 @@ func NewTopicPublisher(config *PublisherConfiguration) *TopicPublisher {
 	wg := sync.WaitGroup{}
 	wg.Add(1)
 	go func() {
-		if err := tp.startSchedulerThread(&wg); err != nil {
+		if err = tp.startSchedulerThread(&wg); err != nil {
 			log.Println(err)
 			return
 		}
@@ -54,7 +54,7 @@ func NewTopicPublisher(config *PublisherConfiguration) *TopicPublisher {
 
 	wg.Wait()
 
-	return tp
+	return
 }
 
 func (p *TopicPublisher) Shutdown() error {

weed/mq/client/pub_client/scheduler.go

@@ -7,7 +7,9 @@ import (
 	"github.com/seaweedfs/seaweedfs/weed/pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
 	"github.com/seaweedfs/seaweedfs/weed/util/buffered_queue"
+	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/status"
 	"log"
 	"sort"
@@ -33,6 +35,7 @@ type EachPartitionPublishJob struct {
 func (p *TopicPublisher) startSchedulerThread(wg *sync.WaitGroup) error {
 
 	if err := p.doConfigureTopic(); err != nil {
+		wg.Done()
 		return fmt.Errorf("configure topic %s: %v", p.config.Topic, err)
 	}
 
@@ -111,6 +114,7 @@ func (p *TopicPublisher) onEachAssignments(generation int, assignments []*mq_pb.
 		go func(job *EachPartitionPublishJob) {
 			defer job.wg.Done()
 			if err := p.doPublishToPartition(job); err != nil {
+				log.Printf("publish to %s partition %v: %v", p.config.Topic, job.Partition, err)
 				errChan <- EachPartitionError{assignment, err, generation}
 			}
 		}(job)
@@ -126,7 +130,7 @@ func (p *TopicPublisher) doPublishToPartition(job *EachPartitionPublishJob) erro
 
 	log.Printf("connecting to %v for topic partition %+v", job.LeaderBroker, job.Partition)
 
-	grpcConnection, err := pb.GrpcDial(context.Background(), job.LeaderBroker, true, p.grpcDialOption)
+	grpcConnection, err := grpc.NewClient(job.LeaderBroker, grpc.WithTransportCredentials(insecure.NewCredentials()), p.grpcDialOption)
 	if err != nil {
 		return fmt.Errorf("dial broker %s: %v", job.LeaderBroker, err)
 	}
@@ -225,7 +229,7 @@ func (p *TopicPublisher) doPublishToPartition(job *EachPartitionPublishJob) erro
 
 func (p *TopicPublisher) doConfigureTopic() (err error) {
 	if len(p.config.Brokers) == 0 {
-		return fmt.Errorf("no bootstrap brokers")
+		return fmt.Errorf("topic configuring found no bootstrap brokers")
 	}
 	var lastErr error
 	for _, brokerAddress := range p.config.Brokers {
@@ -256,7 +260,7 @@ func (p *TopicPublisher) doConfigureTopic() (err error) {
 
 func (p *TopicPublisher) doLookupTopicPartitions() (assignments []*mq_pb.BrokerPartitionAssignment, err error) {
 	if len(p.config.Brokers) == 0 {
-		return nil, fmt.Errorf("no bootstrap brokers")
+		return nil, fmt.Errorf("lookup found no bootstrap brokers")
 	}
 	var lastErr error
 	for _, brokerAddress := range p.config.Brokers {

weed/mq/client/sub_client/connect_to_sub_coordinator.go

@@ -1,7 +1,6 @@
 package sub_client
 
 import (
-	"context"
 	"github.com/seaweedfs/seaweedfs/weed/glog"
 	"github.com/seaweedfs/seaweedfs/weed/pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
@@ -12,10 +11,17 @@ func (sub *TopicSubscriber) doKeepConnectedToSubCoordinator() {
 	waitTime := 1 * time.Second
 	for {
 		for _, broker := range sub.bootstrapBrokers {
+
+			select {
+			case <-sub.ctx.Done():
+				return
+			default:
+			}
+
 			// lookup topic brokers
 			var brokerLeader string
 			err := pb.WithBrokerGrpcClient(false, broker, sub.SubscriberConfig.GrpcDialOption, func(client mq_pb.SeaweedMessagingClient) error {
-				resp, err := client.FindBrokerLeader(context.Background(), &mq_pb.FindBrokerLeaderRequest{})
+				resp, err := client.FindBrokerLeader(sub.ctx, &mq_pb.FindBrokerLeaderRequest{})
 				if err != nil {
 					return err
 				}
@@ -30,10 +36,8 @@ func (sub *TopicSubscriber) doKeepConnectedToSubCoordinator() {
 
 			// connect to the balancer
 			pb.WithBrokerGrpcClient(true, brokerLeader, sub.SubscriberConfig.GrpcDialOption, func(client mq_pb.SeaweedMessagingClient) error {
-				ctx, cancel := context.WithCancel(context.Background())
-				defer cancel()
 
-				stream, err := client.SubscriberToSubCoordinator(ctx)
+				stream, err := client.SubscriberToSubCoordinator(sub.ctx)
 				if err != nil {
 					glog.V(0).Infof("subscriber %s: %v", sub.ContentConfig.Topic, err)
 					return err
@@ -58,6 +62,13 @@ func (sub *TopicSubscriber) doKeepConnectedToSubCoordinator() {
 
 				go func() {
 					for reply := range sub.brokerPartitionAssignmentAckChan {
+
+						select {
+						case <-sub.ctx.Done():
+							return
+						default:
+						}
+
 						glog.V(0).Infof("subscriber instance %s ack %+v", sub.SubscriberConfig.ConsumerGroupInstanceId, reply)
 						if err := stream.Send(reply); err != nil {
 							glog.V(0).Infof("subscriber %s reply: %v", sub.ContentConfig.Topic, err)
@@ -73,6 +84,13 @@ func (sub *TopicSubscriber) doKeepConnectedToSubCoordinator() {
 						glog.V(0).Infof("subscriber %s receive: %v", sub.ContentConfig.Topic, err)
 						return err
 					}
+
+					select {
+					case <-sub.ctx.Done():
+						return nil
+					default:
+					}
+
 					sub.brokerPartitionAssignmentChan <- resp
 					glog.V(0).Infof("Received assignment: %+v", resp)
 				}

weed/mq/client/sub_client/on_each_partition.go

@@ -2,14 +2,13 @@ package sub_client
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"github.com/seaweedfs/seaweedfs/weed/glog"
 	"github.com/seaweedfs/seaweedfs/weed/pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
 	"io"
-	"reflect"
-	"time"
 )
 
 type KeyedOffset struct {
@@ -35,8 +34,7 @@ func (sub *TopicSubscriber) onEachPartition(assigned *mq_pb.BrokerPartitionAssig
 		if po == nil {
 			po = &schema_pb.PartitionOffset{
 				Partition: assigned.Partition,
-				StartTsNs: time.Now().UnixNano(),
+				StartTsNs: sub.ContentConfig.OffsetTsNs,
-				StartType: schema_pb.PartitionOffsetStartType_EARLIEST_IN_MEMORY,
 			}
 		}
 
@@ -47,6 +45,7 @@ func (sub *TopicSubscriber) onEachPartition(assigned *mq_pb.BrokerPartitionAssig
 					ConsumerId:        sub.SubscriberConfig.ConsumerGroupInstanceId,
 					Topic:             sub.ContentConfig.Topic.ToPbTopic(),
 					PartitionOffset:   po,
+					OffsetType:        sub.ContentConfig.OffsetType,
 					Filter:            sub.ContentConfig.Filter,
 					FollowerBroker:    assigned.FollowerBroker,
 					SlidingWindowSize: slidingWindowSize,
@@ -65,6 +64,9 @@ func (sub *TopicSubscriber) onEachPartition(assigned *mq_pb.BrokerPartitionAssig
 		go func() {
 			for {
 				select {
+				case <-sub.ctx.Done():
+					subscribeClient.CloseSend()
+					return
 				case <-stopCh:
 					subscribeClient.CloseSend()
 					return
@@ -86,15 +88,27 @@ func (sub *TopicSubscriber) onEachPartition(assigned *mq_pb.BrokerPartitionAssig
 		}()
 
 		for {
-			// glog.V(0).Infof("subscriber %s/%s/%s waiting for message", sub.ContentConfig.Namespace, sub.ContentConfig.Topic, sub.SubscriberConfig.ConsumerGroup)
+			// glog.V(0).Infof("subscriber %s/%s waiting for message", sub.ContentConfig.Topic, sub.SubscriberConfig.ConsumerGroup)
 			resp, err := subscribeClient.Recv()
 			if err != nil {
+				if errors.Is(err, io.EOF) {
+					return nil
+				}
 				return fmt.Errorf("subscribe recv: %v", err)
 			}
 			if resp.Message == nil {
 				glog.V(0).Infof("subscriber %s/%s received nil message", sub.ContentConfig.Topic, sub.SubscriberConfig.ConsumerGroup)
 				continue
 			}
+
+			select {
+			case <-sub.ctx.Done():
+				return nil
+			case <-stopCh:
+				return nil
+			default:
+			}
+
 			switch m := resp.Message.(type) {
 			case *mq_pb.SubscribeMessageResponse_Data:
 				if m.Data.Ctrl != nil {
@@ -102,7 +116,7 @@ func (sub *TopicSubscriber) onEachPartition(assigned *mq_pb.BrokerPartitionAssig
 					continue
 				}
 				if len(m.Data.Key) == 0 {
-					fmt.Printf("empty key %+v, type %v\n", m, reflect.TypeOf(m))
+					// fmt.Printf("empty key %+v, type %v\n", m, reflect.TypeOf(m))
 					continue
 				}
 				onDataMessageFn(m)

weed/mq/client/sub_client/subscribe.go

@@ -72,12 +72,12 @@ func (sub *TopicSubscriber) startProcessors() {
 				executors := util.NewLimitedConcurrentExecutor(int(sub.SubscriberConfig.SlidingWindowSize))
 				onDataMessageFn := func(m *mq_pb.SubscribeMessageResponse_Data) {
 					executors.Execute(func() {
-						processErr := sub.OnEachMessageFunc(m.Data.Key, m.Data.Value)
+						if sub.OnDataMessageFunc != nil {
-						if processErr == nil {
+							sub.OnDataMessageFunc(m)
-							sub.PartitionOffsetChan <- KeyedOffset{
+						}
-								Key:    m.Data.Key,
+						sub.PartitionOffsetChan <- KeyedOffset{
-								Offset: m.Data.TsNs,
+							Key:    m.Data.Key,
-							}
+							Offset: m.Data.TsNs,
 						}
 					})
 				}

weed/mq/client/sub_client/subscriber.go

@@ -1,6 +1,7 @@
 package sub_client
 
 import (
+	"context"
 	"github.com/seaweedfs/seaweedfs/weed/mq/topic"
 	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
@@ -17,50 +18,50 @@ type SubscriberConfiguration struct {
 	SlidingWindowSize       int32 // how many messages to process concurrently per partition
 }
 
+func (s *SubscriberConfiguration) String() string {
+	return "ClientId: " + s.ClientId + ", ConsumerGroup: " + s.ConsumerGroup + ", ConsumerGroupInstanceId: " + s.ConsumerGroupInstanceId
+}
+
 type ContentConfiguration struct {
 	Topic            topic.Topic
 	Filter           string
 	PartitionOffsets []*schema_pb.PartitionOffset
+	OffsetType       schema_pb.OffsetType
+	OffsetTsNs       int64
 }
 
 type OnDataMessageFn func(m *mq_pb.SubscribeMessageResponse_Data)
-type OnEachMessageFunc func(key, value []byte) (err error)
 type OnCompletionFunc func()
 
 type TopicSubscriber struct {
+	ctx                              context.Context
 	SubscriberConfig                 *SubscriberConfiguration
 	ContentConfig                    *ContentConfiguration
 	brokerPartitionAssignmentChan    chan *mq_pb.SubscriberToSubCoordinatorResponse
 	brokerPartitionAssignmentAckChan chan *mq_pb.SubscriberToSubCoordinatorRequest
-	OnDataMessageFnnc                OnDataMessageFn
+	OnDataMessageFunc                OnDataMessageFn
-	OnEachMessageFunc                OnEachMessageFunc
 	OnCompletionFunc                 OnCompletionFunc
 	bootstrapBrokers                 []string
-	waitForMoreMessage               bool
 	activeProcessors                 map[topic.Partition]*ProcessorState
 	activeProcessorsLock             sync.Mutex
 	PartitionOffsetChan              chan KeyedOffset
 }
 
-func NewTopicSubscriber(bootstrapBrokers []string, subscriber *SubscriberConfiguration, content *ContentConfiguration, partitionOffsetChan chan KeyedOffset) *TopicSubscriber {
+func NewTopicSubscriber(ctx context.Context, bootstrapBrokers []string, subscriber *SubscriberConfiguration, content *ContentConfiguration, partitionOffsetChan chan KeyedOffset) *TopicSubscriber {
 	return &TopicSubscriber{
+		ctx:                              ctx,
 		SubscriberConfig:                 subscriber,
 		ContentConfig:                    content,
 		brokerPartitionAssignmentChan:    make(chan *mq_pb.SubscriberToSubCoordinatorResponse, 1024),
 		brokerPartitionAssignmentAckChan: make(chan *mq_pb.SubscriberToSubCoordinatorRequest, 1024),
 		bootstrapBrokers:                 bootstrapBrokers,
-		waitForMoreMessage:               true,
 		activeProcessors:                 make(map[topic.Partition]*ProcessorState),
 		PartitionOffsetChan:              partitionOffsetChan,
 	}
 }
 
-func (sub *TopicSubscriber) SetEachMessageFunc(onEachMessageFn OnEachMessageFunc) {
-	sub.OnEachMessageFunc = onEachMessageFn
-}
-
 func (sub *TopicSubscriber) SetOnDataMessageFn(fn OnDataMessageFn) {
-	sub.OnDataMessageFnnc = fn
+	sub.OnDataMessageFunc = fn
 }
 
 func (sub *TopicSubscriber) SetCompletionFunc(onCompletionFn OnCompletionFunc) {

weed/mq/logstore/read_log_from_disk.go

@@ -36,7 +36,7 @@ func GenLogOnDiskReadFunc(filerClient filer_pb.FilerClient, t topic.Topic, p top
 				err = fmt.Errorf("unexpected unmarshal mq_pb.Message: %v", err)
 				return
 			}
-			if logEntry.TsNs < starTsNs {
+			if logEntry.TsNs <= starTsNs {
 				pos += 4 + int(size)
 				continue
 			}

weed/mq/logstore/read_parquet_to_log.go

@@ -73,7 +73,7 @@ func GenParquetReadFunc(filerClient filer_pb.FilerClient, t topic.Topic, p topic
 					return processedTsNs, fmt.Errorf("ToRecordValue failed: %v", err)
 				}
 				processedTsNs = recordValue.Fields[SW_COLUMN_NAME_TS].GetInt64Value()
-				if processedTsNs < starTsNs {
+				if processedTsNs <= starTsNs {
 					continue
 				}
 				if stopTsNs != 0 && processedTsNs >= stopTsNs {

weed/mq/sub_coordinator/market.go

@@ -20,7 +20,7 @@ Trigger rebalance when:
 * A new consumer group instance is added
 * Some partitions are unassigned from a consumer group instance.
 
-If multiple reblance requests are received, after a certain period, the market will only process the latest request.
+If multiple rebalance requests are received, after a certain period, the market will only process the latest request.
 
 However, if the number of unassigned partition is increased to exactly the total number of partitions,
 and total partitions are less than or equal to the sum of the max partition count of all consumer group instances,

weed/mq/topic/local_partition.go

@@ -89,12 +89,16 @@ func (p *LocalPartition) Subscribe(clientName string, startPosition log_buffer.M
 			return nil
 		}
 
-		startPosition = processedPosition
+		if processedPosition.Time.UnixNano() != 0 {
+			startPosition = processedPosition
+		}
 		processedPosition, isDone, readInMemoryLogErr = p.LogBuffer.LoopProcessLogData(clientName, startPosition, 0, onNoMessageFn, eachMessageFn)
 		if isDone {
 			return nil
 		}
-		startPosition = processedPosition
+		if processedPosition.Time.UnixNano() != 0 {
+			startPosition = processedPosition
+		}
 
 		if readInMemoryLogErr == log_buffer.ResumeFromDiskError {
 			continue

weed/pb/mq_agent.proto

@@ -21,10 +21,6 @@ service SeaweedMessagingAgent {
     }
 
     // Subscribing
-    rpc StartSubscribeSession (StartSubscribeSessionRequest) returns (StartSubscribeSessionResponse) {
-    }
-    rpc CloseSubscribeSession (CloseSubscribeSessionRequest) returns (CloseSubscribeSessionResponse) {
-    }
     rpc SubscribeRecord (stream SubscribeRecordRequest) returns (stream SubscribeRecordResponse) {
     }
 
@@ -59,28 +55,19 @@ message PublishRecordResponse {
     string error = 2;
 }
 //////////////////////////////////////////////////
-message StartSubscribeSessionRequest {
-    string consumer_group = 1;
-    string consumer_group_instance_id = 2;
-    schema_pb.Topic topic = 4;
-    repeated schema_pb.PartitionOffset partition_offsets = 5;
-    string filter = 6;
-    int32 max_subscribed_partitions = 8;
-    int32 sliding_window_size = 9;
-}
-message StartSubscribeSessionResponse {
-    string error = 1;
-    int64 session_id = 2;
-}
-message CloseSubscribeSessionRequest {
-    int64 session_id = 1;
-}
-message CloseSubscribeSessionResponse {
-    string error = 1;
-}
-//////////////////////////////////////////////////
 message SubscribeRecordRequest {
-    int64 session_id = 1; // session_id is required for the first record
+    message InitSubscribeRecordRequest {
+        string consumer_group = 1;
+        string consumer_group_instance_id = 2;
+        schema_pb.Topic topic = 4;
+        repeated schema_pb.PartitionOffset partition_offsets = 5;
+        schema_pb.OffsetType offset_type = 6;
+        int64 offset_ts_ns = 7;
+        string filter = 10;
+        int32 max_subscribed_partitions = 11;
+        int32 sliding_window_size = 12;
+    }
+    InitSubscribeRecordRequest init = 1;
     int64 ack_sequence = 2;
     bytes ack_key = 3;
 }

weed/pb/mq_agent_pb/mq_agent.pb.go

@@ -361,266 +361,21 @@ func (x *PublishRecordResponse) GetError() string {
 	return ""
 }
 
-// ////////////////////////////////////////////////
-type StartSubscribeSessionRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	ConsumerGroup           string                       `protobuf:"bytes,1,opt,name=consumer_group,json=consumerGroup,proto3" json:"consumer_group,omitempty"`
-	ConsumerGroupInstanceId string                       `protobuf:"bytes,2,opt,name=consumer_group_instance_id,json=consumerGroupInstanceId,proto3" json:"consumer_group_instance_id,omitempty"`
-	Topic                   *schema_pb.Topic             `protobuf:"bytes,4,opt,name=topic,proto3" json:"topic,omitempty"`
-	PartitionOffsets        []*schema_pb.PartitionOffset `protobuf:"bytes,5,rep,name=partition_offsets,json=partitionOffsets,proto3" json:"partition_offsets,omitempty"`
-	Filter                  string                       `protobuf:"bytes,6,opt,name=filter,proto3" json:"filter,omitempty"`
-	MaxSubscribedPartitions int32                        `protobuf:"varint,8,opt,name=max_subscribed_partitions,json=maxSubscribedPartitions,proto3" json:"max_subscribed_partitions,omitempty"`
-	SlidingWindowSize       int32                        `protobuf:"varint,9,opt,name=sliding_window_size,json=slidingWindowSize,proto3" json:"sliding_window_size,omitempty"`
-}
-
-func (x *StartSubscribeSessionRequest) Reset() {
-	*x = StartSubscribeSessionRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_agent_proto_msgTypes[6]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *StartSubscribeSessionRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*StartSubscribeSessionRequest) ProtoMessage() {}
-
-func (x *StartSubscribeSessionRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_agent_proto_msgTypes[6]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use StartSubscribeSessionRequest.ProtoReflect.Descriptor instead.
-func (*StartSubscribeSessionRequest) Descriptor() ([]byte, []int) {
-	return file_mq_agent_proto_rawDescGZIP(), []int{6}
-}
-
-func (x *StartSubscribeSessionRequest) GetConsumerGroup() string {
-	if x != nil {
-		return x.ConsumerGroup
-	}
-	return ""
-}
-
-func (x *StartSubscribeSessionRequest) GetConsumerGroupInstanceId() string {
-	if x != nil {
-		return x.ConsumerGroupInstanceId
-	}
-	return ""
-}
-
-func (x *StartSubscribeSessionRequest) GetTopic() *schema_pb.Topic {
-	if x != nil {
-		return x.Topic
-	}
-	return nil
-}
-
-func (x *StartSubscribeSessionRequest) GetPartitionOffsets() []*schema_pb.PartitionOffset {
-	if x != nil {
-		return x.PartitionOffsets
-	}
-	return nil
-}
-
-func (x *StartSubscribeSessionRequest) GetFilter() string {
-	if x != nil {
-		return x.Filter
-	}
-	return ""
-}
-
-func (x *StartSubscribeSessionRequest) GetMaxSubscribedPartitions() int32 {
-	if x != nil {
-		return x.MaxSubscribedPartitions
-	}
-	return 0
-}
-
-func (x *StartSubscribeSessionRequest) GetSlidingWindowSize() int32 {
-	if x != nil {
-		return x.SlidingWindowSize
-	}
-	return 0
-}
-
-type StartSubscribeSessionResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Error     string `protobuf:"bytes,1,opt,name=error,proto3" json:"error,omitempty"`
-	SessionId int64  `protobuf:"varint,2,opt,name=session_id,json=sessionId,proto3" json:"session_id,omitempty"`
-}
-
-func (x *StartSubscribeSessionResponse) Reset() {
-	*x = StartSubscribeSessionResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_agent_proto_msgTypes[7]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *StartSubscribeSessionResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*StartSubscribeSessionResponse) ProtoMessage() {}
-
-func (x *StartSubscribeSessionResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_agent_proto_msgTypes[7]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use StartSubscribeSessionResponse.ProtoReflect.Descriptor instead.
-func (*StartSubscribeSessionResponse) Descriptor() ([]byte, []int) {
-	return file_mq_agent_proto_rawDescGZIP(), []int{7}
-}
-
-func (x *StartSubscribeSessionResponse) GetError() string {
-	if x != nil {
-		return x.Error
-	}
-	return ""
-}
-
-func (x *StartSubscribeSessionResponse) GetSessionId() int64 {
-	if x != nil {
-		return x.SessionId
-	}
-	return 0
-}
-
-type CloseSubscribeSessionRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	SessionId int64 `protobuf:"varint,1,opt,name=session_id,json=sessionId,proto3" json:"session_id,omitempty"`
-}
-
-func (x *CloseSubscribeSessionRequest) Reset() {
-	*x = CloseSubscribeSessionRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_agent_proto_msgTypes[8]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *CloseSubscribeSessionRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*CloseSubscribeSessionRequest) ProtoMessage() {}
-
-func (x *CloseSubscribeSessionRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_agent_proto_msgTypes[8]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use CloseSubscribeSessionRequest.ProtoReflect.Descriptor instead.
-func (*CloseSubscribeSessionRequest) Descriptor() ([]byte, []int) {
-	return file_mq_agent_proto_rawDescGZIP(), []int{8}
-}
-
-func (x *CloseSubscribeSessionRequest) GetSessionId() int64 {
-	if x != nil {
-		return x.SessionId
-	}
-	return 0
-}
-
-type CloseSubscribeSessionResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Error string `protobuf:"bytes,1,opt,name=error,proto3" json:"error,omitempty"`
-}
-
-func (x *CloseSubscribeSessionResponse) Reset() {
-	*x = CloseSubscribeSessionResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_agent_proto_msgTypes[9]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *CloseSubscribeSessionResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*CloseSubscribeSessionResponse) ProtoMessage() {}
-
-func (x *CloseSubscribeSessionResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_agent_proto_msgTypes[9]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use CloseSubscribeSessionResponse.ProtoReflect.Descriptor instead.
-func (*CloseSubscribeSessionResponse) Descriptor() ([]byte, []int) {
-	return file_mq_agent_proto_rawDescGZIP(), []int{9}
-}
-
-func (x *CloseSubscribeSessionResponse) GetError() string {
-	if x != nil {
-		return x.Error
-	}
-	return ""
-}
-
 // ////////////////////////////////////////////////
 type SubscribeRecordRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	SessionId   int64  `protobuf:"varint,1,opt,name=session_id,json=sessionId,proto3" json:"session_id,omitempty"` // session_id is required for the first record
+	Init        *SubscribeRecordRequest_InitSubscribeRecordRequest `protobuf:"bytes,1,opt,name=init,proto3" json:"init,omitempty"`
-	AckSequence int64  `protobuf:"varint,2,opt,name=ack_sequence,json=ackSequence,proto3" json:"ack_sequence,omitempty"`
+	AckSequence int64                                              `protobuf:"varint,2,opt,name=ack_sequence,json=ackSequence,proto3" json:"ack_sequence,omitempty"`
-	AckKey      []byte `protobuf:"bytes,3,opt,name=ack_key,json=ackKey,proto3" json:"ack_key,omitempty"`
+	AckKey      []byte                                             `protobuf:"bytes,3,opt,name=ack_key,json=ackKey,proto3" json:"ack_key,omitempty"`
 }
 
 func (x *SubscribeRecordRequest) Reset() {
 	*x = SubscribeRecordRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_agent_proto_msgTypes[10]
+		mi := &file_mq_agent_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -633,7 +388,7 @@ func (x *SubscribeRecordRequest) String() string {
 func (*SubscribeRecordRequest) ProtoMessage() {}
 
 func (x *SubscribeRecordRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_agent_proto_msgTypes[10]
+	mi := &file_mq_agent_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -646,14 +401,14 @@ func (x *SubscribeRecordRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SubscribeRecordRequest.ProtoReflect.Descriptor instead.
 func (*SubscribeRecordRequest) Descriptor() ([]byte, []int) {
-	return file_mq_agent_proto_rawDescGZIP(), []int{10}
+	return file_mq_agent_proto_rawDescGZIP(), []int{6}
 }
 
-func (x *SubscribeRecordRequest) GetSessionId() int64 {
+func (x *SubscribeRecordRequest) GetInit() *SubscribeRecordRequest_InitSubscribeRecordRequest {
 	if x != nil {
-		return x.SessionId
+		return x.Init
 	}
-	return 0
+	return nil
 }
 
 func (x *SubscribeRecordRequest) GetAckSequence() int64 {
@@ -675,7 +430,6 @@ type SubscribeRecordResponse struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Sequence      int64                  `protobuf:"varint,1,opt,name=sequence,proto3" json:"sequence,omitempty"`
 	Key           []byte                 `protobuf:"bytes,2,opt,name=key,proto3" json:"key,omitempty"`
 	Value         *schema_pb.RecordValue `protobuf:"bytes,3,opt,name=value,proto3" json:"value,omitempty"`
 	TsNs          int64                  `protobuf:"varint,4,opt,name=ts_ns,json=tsNs,proto3" json:"ts_ns,omitempty"`
@@ -687,7 +441,7 @@ type SubscribeRecordResponse struct {
 func (x *SubscribeRecordResponse) Reset() {
 	*x = SubscribeRecordResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_mq_agent_proto_msgTypes[11]
+		mi := &file_mq_agent_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -700,7 +454,7 @@ func (x *SubscribeRecordResponse) String() string {
 func (*SubscribeRecordResponse) ProtoMessage() {}
 
 func (x *SubscribeRecordResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_mq_agent_proto_msgTypes[11]
+	mi := &file_mq_agent_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -713,14 +467,7 @@ func (x *SubscribeRecordResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SubscribeRecordResponse.ProtoReflect.Descriptor instead.
 func (*SubscribeRecordResponse) Descriptor() ([]byte, []int) {
-	return file_mq_agent_proto_rawDescGZIP(), []int{11}
+	return file_mq_agent_proto_rawDescGZIP(), []int{7}
-}
-
-func (x *SubscribeRecordResponse) GetSequence() int64 {
-	if x != nil {
-		return x.Sequence
-	}
-	return 0
 }
 
 func (x *SubscribeRecordResponse) GetKey() []byte {
@@ -765,6 +512,117 @@ func (x *SubscribeRecordResponse) GetIsEndOfTopic() bool {
 	return false
 }
 
+type SubscribeRecordRequest_InitSubscribeRecordRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	ConsumerGroup           string                       `protobuf:"bytes,1,opt,name=consumer_group,json=consumerGroup,proto3" json:"consumer_group,omitempty"`
+	ConsumerGroupInstanceId string                       `protobuf:"bytes,2,opt,name=consumer_group_instance_id,json=consumerGroupInstanceId,proto3" json:"consumer_group_instance_id,omitempty"`
+	Topic                   *schema_pb.Topic             `protobuf:"bytes,4,opt,name=topic,proto3" json:"topic,omitempty"`
+	PartitionOffsets        []*schema_pb.PartitionOffset `protobuf:"bytes,5,rep,name=partition_offsets,json=partitionOffsets,proto3" json:"partition_offsets,omitempty"`
+	OffsetType              schema_pb.OffsetType         `protobuf:"varint,6,opt,name=offset_type,json=offsetType,proto3,enum=schema_pb.OffsetType" json:"offset_type,omitempty"`
+	OffsetTsNs              int64                        `protobuf:"varint,7,opt,name=offset_ts_ns,json=offsetTsNs,proto3" json:"offset_ts_ns,omitempty"`
+	Filter                  string                       `protobuf:"bytes,10,opt,name=filter,proto3" json:"filter,omitempty"`
+	MaxSubscribedPartitions int32                        `protobuf:"varint,11,opt,name=max_subscribed_partitions,json=maxSubscribedPartitions,proto3" json:"max_subscribed_partitions,omitempty"`
+	SlidingWindowSize       int32                        `protobuf:"varint,12,opt,name=sliding_window_size,json=slidingWindowSize,proto3" json:"sliding_window_size,omitempty"`
+}
+
+func (x *SubscribeRecordRequest_InitSubscribeRecordRequest) Reset() {
+	*x = SubscribeRecordRequest_InitSubscribeRecordRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_mq_agent_proto_msgTypes[8]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SubscribeRecordRequest_InitSubscribeRecordRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SubscribeRecordRequest_InitSubscribeRecordRequest) ProtoMessage() {}
+
+func (x *SubscribeRecordRequest_InitSubscribeRecordRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_mq_agent_proto_msgTypes[8]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SubscribeRecordRequest_InitSubscribeRecordRequest.ProtoReflect.Descriptor instead.
+func (*SubscribeRecordRequest_InitSubscribeRecordRequest) Descriptor() ([]byte, []int) {
+	return file_mq_agent_proto_rawDescGZIP(), []int{6, 0}
+}
+
+func (x *SubscribeRecordRequest_InitSubscribeRecordRequest) GetConsumerGroup() string {
+	if x != nil {
+		return x.ConsumerGroup
+	}
+	return ""
+}
+
+func (x *SubscribeRecordRequest_InitSubscribeRecordRequest) GetConsumerGroupInstanceId() string {
+	if x != nil {
+		return x.ConsumerGroupInstanceId
+	}
+	return ""
+}
+
+func (x *SubscribeRecordRequest_InitSubscribeRecordRequest) GetTopic() *schema_pb.Topic {
+	if x != nil {
+		return x.Topic
+	}
+	return nil
+}
+
+func (x *SubscribeRecordRequest_InitSubscribeRecordRequest) GetPartitionOffsets() []*schema_pb.PartitionOffset {
+	if x != nil {
+		return x.PartitionOffsets
+	}
+	return nil
+}
+
+func (x *SubscribeRecordRequest_InitSubscribeRecordRequest) GetOffsetType() schema_pb.OffsetType {
+	if x != nil {
+		return x.OffsetType
+	}
+	return schema_pb.OffsetType(0)
+}
+
+func (x *SubscribeRecordRequest_InitSubscribeRecordRequest) GetOffsetTsNs() int64 {
+	if x != nil {
+		return x.OffsetTsNs
+	}
+	return 0
+}
+
+func (x *SubscribeRecordRequest_InitSubscribeRecordRequest) GetFilter() string {
+	if x != nil {
+		return x.Filter
+	}
+	return ""
+}
+
+func (x *SubscribeRecordRequest_InitSubscribeRecordRequest) GetMaxSubscribedPartitions() int32 {
+	if x != nil {
+		return x.MaxSubscribedPartitions
+	}
+	return 0
+}
+
+func (x *SubscribeRecordRequest_InitSubscribeRecordRequest) GetSlidingWindowSize() int32 {
+	if x != nil {
+		return x.SlidingWindowSize
+	}
+	return 0
+}
+
 var File_mq_agent_proto protoreflect.FileDescriptor
 
 var file_mq_agent_proto_rawDesc = []byte{
@@ -808,115 +666,95 @@ var file_mq_agent_proto_rawDesc = []byte{
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+	0x0a, 0x12, 0x73, 0x65, 0x61, 0x77, 0x65, 0x65, 0x64, 0x66, 0x73, 0x2e, 0x6d, 0x71, 0x5f, 0x61,
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+	0x67, 0x65, 0x6e, 0x74, 0x42, 0x16, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x51, 0x75, 0x65,
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+	0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x73, 0x65, 0x61, 0x77, 0x65, 0x65, 0x64,
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+	0x66, 0x73, 0x2f, 0x73, 0x65, 0x61, 0x77, 0x65, 0x65, 0x64, 0x66, 0x73, 0x2f, 0x77, 0x65, 0x65,
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+	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-	0x62, 0x73, 0x63, 0x72, 0x69, 0x62, 0x65, 0x53, 0x65, 0x73, 0x73, 0x69, 0x6f, 0x6e, 0x12, 0x2a,
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-	0x75, 0x62, 0x73, 0x63, 0x72, 0x69, 0x62, 0x65, 0x53, 0x65, 0x73, 0x73, 0x69, 0x6f, 0x6e, 0x52,
-	0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x64, 0x0a, 0x0f, 0x53, 0x75, 0x62,
-	0x73, 0x63, 0x72, 0x69, 0x62, 0x65, 0x52, 0x65, 0x63, 0x6f, 0x72, 0x64, 0x12, 0x24, 0x2e, 0x6d,
-	0x65, 0x73, 0x73, 0x61, 0x67, 0x69, 0x6e, 0x67, 0x5f, 0x70, 0x62, 0x2e, 0x53, 0x75, 0x62, 0x73,
-	0x63, 0x72, 0x69, 0x62, 0x65, 0x52, 0x65, 0x63, 0x6f, 0x72, 0x64, 0x52, 0x65, 0x71, 0x75, 0x65,
-	0x73, 0x74, 0x1a, 0x25, 0x2e, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x69, 0x6e, 0x67, 0x5f, 0x70,
-	0x62, 0x2e, 0x53, 0x75, 0x62, 0x73, 0x63, 0x72, 0x69, 0x62, 0x65, 0x52, 0x65, 0x63, 0x6f, 0x72,
-	0x64, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x28, 0x01, 0x30, 0x01, 0x42,
-	0x60, 0x0a, 0x12, 0x73, 0x65, 0x61, 0x77, 0x65, 0x65, 0x64, 0x66, 0x73, 0x2e, 0x6d, 0x71, 0x5f,
-	0x61, 0x67, 0x65, 0x6e, 0x74, 0x42, 0x16, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x51, 0x75,
-	0x65, 0x75, 0x65, 0x41, 0x67, 0x65, 0x6e, 0x74, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x5a, 0x32, 0x67,
-	0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x73, 0x65, 0x61, 0x77, 0x65, 0x65,
-	0x64, 0x66, 0x73, 0x2f, 0x73, 0x65, 0x61, 0x77, 0x65, 0x65, 0x64, 0x66, 0x73, 0x2f, 0x77, 0x65,
-	0x65, 0x64, 0x2f, 0x70, 0x62, 0x2f, 0x6d, 0x71, 0x5f, 0x61, 0x67, 0x65, 0x6e, 0x74, 0x5f, 0x70,
-	0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -931,49 +769,45 @@ func file_mq_agent_proto_rawDescGZIP() []byte {
 	return file_mq_agent_proto_rawDescData
 }
 
-var file_mq_agent_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
+var file_mq_agent_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
 var file_mq_agent_proto_goTypes = []any{
-	(*StartPublishSessionRequest)(nil),    // 0: messaging_pb.StartPublishSessionRequest
+	(*StartPublishSessionRequest)(nil),                        // 0: messaging_pb.StartPublishSessionRequest
-	(*StartPublishSessionResponse)(nil),   // 1: messaging_pb.StartPublishSessionResponse
+	(*StartPublishSessionResponse)(nil),                       // 1: messaging_pb.StartPublishSessionResponse
-	(*ClosePublishSessionRequest)(nil),    // 2: messaging_pb.ClosePublishSessionRequest
+	(*ClosePublishSessionRequest)(nil),                        // 2: messaging_pb.ClosePublishSessionRequest
-	(*ClosePublishSessionResponse)(nil),   // 3: messaging_pb.ClosePublishSessionResponse
+	(*ClosePublishSessionResponse)(nil),                       // 3: messaging_pb.ClosePublishSessionResponse
-	(*PublishRecordRequest)(nil),          // 4: messaging_pb.PublishRecordRequest
+	(*PublishRecordRequest)(nil),                              // 4: messaging_pb.PublishRecordRequest
-	(*PublishRecordResponse)(nil),         // 5: messaging_pb.PublishRecordResponse
+	(*PublishRecordResponse)(nil),                             // 5: messaging_pb.PublishRecordResponse
-	(*StartSubscribeSessionRequest)(nil),  // 6: messaging_pb.StartSubscribeSessionRequest
+	(*SubscribeRecordRequest)(nil),                            // 6: messaging_pb.SubscribeRecordRequest
-	(*StartSubscribeSessionResponse)(nil), // 7: messaging_pb.StartSubscribeSessionResponse
+	(*SubscribeRecordResponse)(nil),                           // 7: messaging_pb.SubscribeRecordResponse
-	(*CloseSubscribeSessionRequest)(nil),  // 8: messaging_pb.CloseSubscribeSessionRequest
+	(*SubscribeRecordRequest_InitSubscribeRecordRequest)(nil), // 8: messaging_pb.SubscribeRecordRequest.InitSubscribeRecordRequest
-	(*CloseSubscribeSessionResponse)(nil), // 9: messaging_pb.CloseSubscribeSessionResponse
+	(*schema_pb.Topic)(nil),                                   // 9: schema_pb.Topic
-	(*SubscribeRecordRequest)(nil),        // 10: messaging_pb.SubscribeRecordRequest
+	(*schema_pb.RecordType)(nil),                              // 10: schema_pb.RecordType
-	(*SubscribeRecordResponse)(nil),       // 11: messaging_pb.SubscribeRecordResponse
+	(*schema_pb.RecordValue)(nil),                             // 11: schema_pb.RecordValue
-	(*schema_pb.Topic)(nil),               // 12: schema_pb.Topic
+	(*schema_pb.PartitionOffset)(nil),                         // 12: schema_pb.PartitionOffset
-	(*schema_pb.RecordType)(nil),          // 13: schema_pb.RecordType
+	(schema_pb.OffsetType)(0),                                 // 13: schema_pb.OffsetType
-	(*schema_pb.RecordValue)(nil),         // 14: schema_pb.RecordValue
-	(*schema_pb.PartitionOffset)(nil),     // 15: schema_pb.PartitionOffset
 }
 var file_mq_agent_proto_depIdxs = []int32{
-	12, // 0: messaging_pb.StartPublishSessionRequest.topic:type_name -> schema_pb.Topic
+	9,  // 0: messaging_pb.StartPublishSessionRequest.topic:type_name -> schema_pb.Topic
-	13, // 1: messaging_pb.StartPublishSessionRequest.record_type:type_name -> schema_pb.RecordType
+	10, // 1: messaging_pb.StartPublishSessionRequest.record_type:type_name -> schema_pb.RecordType
-	14, // 2: messaging_pb.PublishRecordRequest.value:type_name -> schema_pb.RecordValue
+	11, // 2: messaging_pb.PublishRecordRequest.value:type_name -> schema_pb.RecordValue
-	12, // 3: messaging_pb.StartSubscribeSessionRequest.topic:type_name -> schema_pb.Topic
+	8,  // 3: messaging_pb.SubscribeRecordRequest.init:type_name -> messaging_pb.SubscribeRecordRequest.InitSubscribeRecordRequest
-	15, // 4: messaging_pb.StartSubscribeSessionRequest.partition_offsets:type_name -> schema_pb.PartitionOffset
+	11, // 4: messaging_pb.SubscribeRecordResponse.value:type_name -> schema_pb.RecordValue
-	14, // 5: messaging_pb.SubscribeRecordResponse.value:type_name -> schema_pb.RecordValue
+	9,  // 5: messaging_pb.SubscribeRecordRequest.InitSubscribeRecordRequest.topic:type_name -> schema_pb.Topic
-	0,  // 6: messaging_pb.SeaweedMessagingAgent.StartPublishSession:input_type -> messaging_pb.StartPublishSessionRequest
+	12, // 6: messaging_pb.SubscribeRecordRequest.InitSubscribeRecordRequest.partition_offsets:type_name -> schema_pb.PartitionOffset
-	2,  // 7: messaging_pb.SeaweedMessagingAgent.ClosePublishSession:input_type -> messaging_pb.ClosePublishSessionRequest
+	13, // 7: messaging_pb.SubscribeRecordRequest.InitSubscribeRecordRequest.offset_type:type_name -> schema_pb.OffsetType
-	4,  // 8: messaging_pb.SeaweedMessagingAgent.PublishRecord:input_type -> messaging_pb.PublishRecordRequest
+	0,  // 8: messaging_pb.SeaweedMessagingAgent.StartPublishSession:input_type -> messaging_pb.StartPublishSessionRequest
-	6,  // 9: messaging_pb.SeaweedMessagingAgent.StartSubscribeSession:input_type -> messaging_pb.StartSubscribeSessionRequest
+	2,  // 9: messaging_pb.SeaweedMessagingAgent.ClosePublishSession:input_type -> messaging_pb.ClosePublishSessionRequest
-	8,  // 10: messaging_pb.SeaweedMessagingAgent.CloseSubscribeSession:input_type -> messaging_pb.CloseSubscribeSessionRequest
+	4,  // 10: messaging_pb.SeaweedMessagingAgent.PublishRecord:input_type -> messaging_pb.PublishRecordRequest
-	10, // 11: messaging_pb.SeaweedMessagingAgent.SubscribeRecord:input_type -> messaging_pb.SubscribeRecordRequest
+	6,  // 11: messaging_pb.SeaweedMessagingAgent.SubscribeRecord:input_type -> messaging_pb.SubscribeRecordRequest
 	1,  // 12: messaging_pb.SeaweedMessagingAgent.StartPublishSession:output_type -> messaging_pb.StartPublishSessionResponse
 	3,  // 13: messaging_pb.SeaweedMessagingAgent.ClosePublishSession:output_type -> messaging_pb.ClosePublishSessionResponse
 	5,  // 14: messaging_pb.SeaweedMessagingAgent.PublishRecord:output_type -> messaging_pb.PublishRecordResponse
-	7,  // 15: messaging_pb.SeaweedMessagingAgent.StartSubscribeSession:output_type -> messaging_pb.StartSubscribeSessionResponse
+	7,  // 15: messaging_pb.SeaweedMessagingAgent.SubscribeRecord:output_type -> messaging_pb.SubscribeRecordResponse
-	9,  // 16: messaging_pb.SeaweedMessagingAgent.CloseSubscribeSession:output_type -> messaging_pb.CloseSubscribeSessionResponse
+	12, // [12:16] is the sub-list for method output_type
-	11, // 17: messaging_pb.SeaweedMessagingAgent.SubscribeRecord:output_type -> messaging_pb.SubscribeRecordResponse
+	8,  // [8:12] is the sub-list for method input_type
-	12, // [12:18] is the sub-list for method output_type
+	8,  // [8:8] is the sub-list for extension type_name
-	6,  // [6:12] is the sub-list for method input_type
+	8,  // [8:8] is the sub-list for extension extendee
-	6,  // [6:6] is the sub-list for extension type_name
+	0,  // [0:8] is the sub-list for field type_name
-	6,  // [6:6] is the sub-list for extension extendee
-	0,  // [0:6] is the sub-list for field type_name
 }
 
 func init() { file_mq_agent_proto_init() }
@@ -1055,54 +889,6 @@ func file_mq_agent_proto_init() {
 			}
 		}
 		file_mq_agent_proto_msgTypes[6].Exporter = func(v any, i int) any {
-			switch v := v.(*StartSubscribeSessionRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_mq_agent_proto_msgTypes[7].Exporter = func(v any, i int) any {
-			switch v := v.(*StartSubscribeSessionResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_mq_agent_proto_msgTypes[8].Exporter = func(v any, i int) any {
-			switch v := v.(*CloseSubscribeSessionRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_mq_agent_proto_msgTypes[9].Exporter = func(v any, i int) any {
-			switch v := v.(*CloseSubscribeSessionResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_mq_agent_proto_msgTypes[10].Exporter = func(v any, i int) any {
 			switch v := v.(*SubscribeRecordRequest); i {
 			case 0:
 				return &v.state
@@ -1114,7 +900,7 @@ func file_mq_agent_proto_init() {
 				return nil
 			}
 		}
-		file_mq_agent_proto_msgTypes[11].Exporter = func(v any, i int) any {
+		file_mq_agent_proto_msgTypes[7].Exporter = func(v any, i int) any {
 			switch v := v.(*SubscribeRecordResponse); i {
 			case 0:
 				return &v.state
@@ -1126,6 +912,18 @@ func file_mq_agent_proto_init() {
 				return nil
 			}
 		}
+		file_mq_agent_proto_msgTypes[8].Exporter = func(v any, i int) any {
+			switch v := v.(*SubscribeRecordRequest_InitSubscribeRecordRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
@@ -1133,7 +931,7 @@ func file_mq_agent_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_mq_agent_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   12,
+			NumMessages:   9,
 			NumExtensions: 0,
 			NumServices:   1,
 		},

weed/pb/mq_agent_pb/mq_agent_grpc.pb.go

@@ -19,12 +19,10 @@ import (
 const _ = grpc.SupportPackageIsVersion9
 
 const (
-	SeaweedMessagingAgent_StartPublishSession_FullMethodName   = "/messaging_pb.SeaweedMessagingAgent/StartPublishSession"
+	SeaweedMessagingAgent_StartPublishSession_FullMethodName = "/messaging_pb.SeaweedMessagingAgent/StartPublishSession"
-	SeaweedMessagingAgent_ClosePublishSession_FullMethodName   = "/messaging_pb.SeaweedMessagingAgent/ClosePublishSession"
+	SeaweedMessagingAgent_ClosePublishSession_FullMethodName = "/messaging_pb.SeaweedMessagingAgent/ClosePublishSession"
-	SeaweedMessagingAgent_PublishRecord_FullMethodName         = "/messaging_pb.SeaweedMessagingAgent/PublishRecord"
+	SeaweedMessagingAgent_PublishRecord_FullMethodName       = "/messaging_pb.SeaweedMessagingAgent/PublishRecord"
-	SeaweedMessagingAgent_StartSubscribeSession_FullMethodName = "/messaging_pb.SeaweedMessagingAgent/StartSubscribeSession"
+	SeaweedMessagingAgent_SubscribeRecord_FullMethodName     = "/messaging_pb.SeaweedMessagingAgent/SubscribeRecord"
-	SeaweedMessagingAgent_CloseSubscribeSession_FullMethodName = "/messaging_pb.SeaweedMessagingAgent/CloseSubscribeSession"
-	SeaweedMessagingAgent_SubscribeRecord_FullMethodName       = "/messaging_pb.SeaweedMessagingAgent/SubscribeRecord"
 )
 
 // SeaweedMessagingAgentClient is the client API for SeaweedMessagingAgent service.
@@ -36,8 +34,6 @@ type SeaweedMessagingAgentClient interface {
 	ClosePublishSession(ctx context.Context, in *ClosePublishSessionRequest, opts ...grpc.CallOption) (*ClosePublishSessionResponse, error)
 	PublishRecord(ctx context.Context, opts ...grpc.CallOption) (grpc.BidiStreamingClient[PublishRecordRequest, PublishRecordResponse], error)
 	// Subscribing
-	StartSubscribeSession(ctx context.Context, in *StartSubscribeSessionRequest, opts ...grpc.CallOption) (*StartSubscribeSessionResponse, error)
-	CloseSubscribeSession(ctx context.Context, in *CloseSubscribeSessionRequest, opts ...grpc.CallOption) (*CloseSubscribeSessionResponse, error)
 	SubscribeRecord(ctx context.Context, opts ...grpc.CallOption) (grpc.BidiStreamingClient[SubscribeRecordRequest, SubscribeRecordResponse], error)
 }
 
@@ -82,26 +78,6 @@ func (c *seaweedMessagingAgentClient) PublishRecord(ctx context.Context, opts ..
 // This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
 type SeaweedMessagingAgent_PublishRecordClient = grpc.BidiStreamingClient[PublishRecordRequest, PublishRecordResponse]
 
-func (c *seaweedMessagingAgentClient) StartSubscribeSession(ctx context.Context, in *StartSubscribeSessionRequest, opts ...grpc.CallOption) (*StartSubscribeSessionResponse, error) {
-	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
-	out := new(StartSubscribeSessionResponse)
-	err := c.cc.Invoke(ctx, SeaweedMessagingAgent_StartSubscribeSession_FullMethodName, in, out, cOpts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *seaweedMessagingAgentClient) CloseSubscribeSession(ctx context.Context, in *CloseSubscribeSessionRequest, opts ...grpc.CallOption) (*CloseSubscribeSessionResponse, error) {
-	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
-	out := new(CloseSubscribeSessionResponse)
-	err := c.cc.Invoke(ctx, SeaweedMessagingAgent_CloseSubscribeSession_FullMethodName, in, out, cOpts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
 func (c *seaweedMessagingAgentClient) SubscribeRecord(ctx context.Context, opts ...grpc.CallOption) (grpc.BidiStreamingClient[SubscribeRecordRequest, SubscribeRecordResponse], error) {
 	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	stream, err := c.cc.NewStream(ctx, &SeaweedMessagingAgent_ServiceDesc.Streams[1], SeaweedMessagingAgent_SubscribeRecord_FullMethodName, cOpts...)
@@ -124,8 +100,6 @@ type SeaweedMessagingAgentServer interface {
 	ClosePublishSession(context.Context, *ClosePublishSessionRequest) (*ClosePublishSessionResponse, error)
 	PublishRecord(grpc.BidiStreamingServer[PublishRecordRequest, PublishRecordResponse]) error
 	// Subscribing
-	StartSubscribeSession(context.Context, *StartSubscribeSessionRequest) (*StartSubscribeSessionResponse, error)
-	CloseSubscribeSession(context.Context, *CloseSubscribeSessionRequest) (*CloseSubscribeSessionResponse, error)
 	SubscribeRecord(grpc.BidiStreamingServer[SubscribeRecordRequest, SubscribeRecordResponse]) error
 	mustEmbedUnimplementedSeaweedMessagingAgentServer()
 }
@@ -146,12 +120,6 @@ func (UnimplementedSeaweedMessagingAgentServer) ClosePublishSession(context.Cont
 func (UnimplementedSeaweedMessagingAgentServer) PublishRecord(grpc.BidiStreamingServer[PublishRecordRequest, PublishRecordResponse]) error {
 	return status.Errorf(codes.Unimplemented, "method PublishRecord not implemented")
 }
-func (UnimplementedSeaweedMessagingAgentServer) StartSubscribeSession(context.Context, *StartSubscribeSessionRequest) (*StartSubscribeSessionResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method StartSubscribeSession not implemented")
-}
-func (UnimplementedSeaweedMessagingAgentServer) CloseSubscribeSession(context.Context, *CloseSubscribeSessionRequest) (*CloseSubscribeSessionResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method CloseSubscribeSession not implemented")
-}
 func (UnimplementedSeaweedMessagingAgentServer) SubscribeRecord(grpc.BidiStreamingServer[SubscribeRecordRequest, SubscribeRecordResponse]) error {
 	return status.Errorf(codes.Unimplemented, "method SubscribeRecord not implemented")
 }
@@ -219,42 +187,6 @@ func _SeaweedMessagingAgent_PublishRecord_Handler(srv interface{}, stream grpc.S
 // This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.
 type SeaweedMessagingAgent_PublishRecordServer = grpc.BidiStreamingServer[PublishRecordRequest, PublishRecordResponse]
 
-func _SeaweedMessagingAgent_StartSubscribeSession_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(StartSubscribeSessionRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(SeaweedMessagingAgentServer).StartSubscribeSession(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: SeaweedMessagingAgent_StartSubscribeSession_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(SeaweedMessagingAgentServer).StartSubscribeSession(ctx, req.(*StartSubscribeSessionRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _SeaweedMessagingAgent_CloseSubscribeSession_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(CloseSubscribeSessionRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(SeaweedMessagingAgentServer).CloseSubscribeSession(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: SeaweedMessagingAgent_CloseSubscribeSession_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(SeaweedMessagingAgentServer).CloseSubscribeSession(ctx, req.(*CloseSubscribeSessionRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
 func _SeaweedMessagingAgent_SubscribeRecord_Handler(srv interface{}, stream grpc.ServerStream) error {
 	return srv.(SeaweedMessagingAgentServer).SubscribeRecord(&grpc.GenericServerStream[SubscribeRecordRequest, SubscribeRecordResponse]{ServerStream: stream})
 }
@@ -277,14 +209,6 @@ var SeaweedMessagingAgent_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "ClosePublishSession",
 			Handler:    _SeaweedMessagingAgent_ClosePublishSession_Handler,
 		},
-		{
-			MethodName: "StartSubscribeSession",
-			Handler:    _SeaweedMessagingAgent_StartSubscribeSession_Handler,
-		},
-		{
-			MethodName: "CloseSubscribeSession",
-			Handler:    _SeaweedMessagingAgent_CloseSubscribeSession_Handler,
-		},
 	},
 	Streams: []grpc.StreamDesc{
 		{

weed/pb/mq_broker.proto

@@ -229,9 +229,10 @@ message SubscribeMessageRequest {
         string client_id = 3;
         schema_pb.Topic topic = 4;
         schema_pb.PartitionOffset partition_offset = 5;
-        string filter = 6;
+        schema_pb.OffsetType offset_type = 6;
-        string follower_broker = 7;
+        string filter = 10;
-        int32 sliding_window_size = 8;
+        string follower_broker = 11;
+        int32 sliding_window_size = 12;
     }
     message AckMessage {
         int64 sequence = 1;

weed/pb/mq_pb/mq_broker.pb.go

@@ -2571,9 +2571,10 @@ type SubscribeMessageRequest_InitMessage struct {
 	ClientId          string                     `protobuf:"bytes,3,opt,name=client_id,json=clientId,proto3" json:"client_id,omitempty"`
 	Topic             *schema_pb.Topic           `protobuf:"bytes,4,opt,name=topic,proto3" json:"topic,omitempty"`
 	PartitionOffset   *schema_pb.PartitionOffset `protobuf:"bytes,5,opt,name=partition_offset,json=partitionOffset,proto3" json:"partition_offset,omitempty"`
-	Filter            string                     `protobuf:"bytes,6,opt,name=filter,proto3" json:"filter,omitempty"`
+	OffsetType        schema_pb.OffsetType       `protobuf:"varint,6,opt,name=offset_type,json=offsetType,proto3,enum=schema_pb.OffsetType" json:"offset_type,omitempty"`
-	FollowerBroker    string                     `protobuf:"bytes,7,opt,name=follower_broker,json=followerBroker,proto3" json:"follower_broker,omitempty"`
+	Filter            string                     `protobuf:"bytes,10,opt,name=filter,proto3" json:"filter,omitempty"`
-	SlidingWindowSize int32                      `protobuf:"varint,8,opt,name=sliding_window_size,json=slidingWindowSize,proto3" json:"sliding_window_size,omitempty"`
+	FollowerBroker    string                     `protobuf:"bytes,11,opt,name=follower_broker,json=followerBroker,proto3" json:"follower_broker,omitempty"`
+	SlidingWindowSize int32                      `protobuf:"varint,12,opt,name=sliding_window_size,json=slidingWindowSize,proto3" json:"sliding_window_size,omitempty"`
 }
 
 func (x *SubscribeMessageRequest_InitMessage) Reset() {
@@ -2643,6 +2644,13 @@ func (x *SubscribeMessageRequest_InitMessage) GetPartitionOffset() *schema_pb.Pa
 	return nil
 }
 
+func (x *SubscribeMessageRequest_InitMessage) GetOffsetType() schema_pb.OffsetType {
+	if x != nil {
+		return x.OffsetType
+	}
+	return schema_pb.OffsetType(0)
+}
+
 func (x *SubscribeMessageRequest_InitMessage) GetFilter() string {
 	if x != nil {
 		return x.Filter
@@ -3210,7 +3218,7 @@ var file_mq_broker_proto_rawDesc = []byte{
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@@ -3220,8 +3228,8 @@ var file_mq_broker_proto_rawDesc = []byte{
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@@ -3235,183 +3243,187 @@ var file_mq_broker_proto_rawDesc = []byte{
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+	0x6f, 0x5a, 0x2c, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x73, 0x65,
+	0x61, 0x77, 0x65, 0x65, 0x64, 0x66, 0x73, 0x2f, 0x73, 0x65, 0x61, 0x77, 0x65, 0x65, 0x64, 0x66,
+	0x73, 0x2f, 0x77, 0x65, 0x65, 0x64, 0x2f, 0x70, 0x62, 0x2f, 0x6d, 0x71, 0x5f, 0x70, 0x62, 0x62,
+	0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -3482,6 +3494,7 @@ var file_mq_broker_proto_goTypes = []any{
 	(*schema_pb.Partition)(nil),                                      // 51: schema_pb.Partition
 	(*schema_pb.RecordType)(nil),                                     // 52: schema_pb.RecordType
 	(*schema_pb.PartitionOffset)(nil),                                // 53: schema_pb.PartitionOffset
+	(schema_pb.OffsetType)(0),                                        // 54: schema_pb.OffsetType
 }
 var file_mq_broker_proto_depIdxs = []int32{
 	33, // 0: messaging_pb.BrokerStats.stats:type_name -> messaging_pb.BrokerStats.StatsEntry
@@ -3533,41 +3546,42 @@ var file_mq_broker_proto_depIdxs = []int32{
 	51, // 46: messaging_pb.PublishFollowMeRequest.InitMessage.partition:type_name -> schema_pb.Partition
 	50, // 47: messaging_pb.SubscribeMessageRequest.InitMessage.topic:type_name -> schema_pb.Topic
 	53, // 48: messaging_pb.SubscribeMessageRequest.InitMessage.partition_offset:type_name -> schema_pb.PartitionOffset
-	50, // 49: messaging_pb.SubscribeFollowMeRequest.InitMessage.topic:type_name -> schema_pb.Topic
+	54, // 49: messaging_pb.SubscribeMessageRequest.InitMessage.offset_type:type_name -> schema_pb.OffsetType
-	51, // 50: messaging_pb.SubscribeFollowMeRequest.InitMessage.partition:type_name -> schema_pb.Partition
+	50, // 50: messaging_pb.SubscribeFollowMeRequest.InitMessage.topic:type_name -> schema_pb.Topic
-	0,  // 51: messaging_pb.SeaweedMessaging.FindBrokerLeader:input_type -> messaging_pb.FindBrokerLeaderRequest
+	51, // 51: messaging_pb.SubscribeFollowMeRequest.InitMessage.partition:type_name -> schema_pb.Partition
-	4,  // 52: messaging_pb.SeaweedMessaging.PublisherToPubBalancer:input_type -> messaging_pb.PublisherToPubBalancerRequest
+	0,  // 52: messaging_pb.SeaweedMessaging.FindBrokerLeader:input_type -> messaging_pb.FindBrokerLeaderRequest
-	6,  // 53: messaging_pb.SeaweedMessaging.BalanceTopics:input_type -> messaging_pb.BalanceTopicsRequest
+	4,  // 53: messaging_pb.SeaweedMessaging.PublisherToPubBalancer:input_type -> messaging_pb.PublisherToPubBalancerRequest
-	10, // 54: messaging_pb.SeaweedMessaging.ListTopics:input_type -> messaging_pb.ListTopicsRequest
+	6,  // 54: messaging_pb.SeaweedMessaging.BalanceTopics:input_type -> messaging_pb.BalanceTopicsRequest
-	8,  // 55: messaging_pb.SeaweedMessaging.ConfigureTopic:input_type -> messaging_pb.ConfigureTopicRequest
+	10, // 55: messaging_pb.SeaweedMessaging.ListTopics:input_type -> messaging_pb.ListTopicsRequest
-	12, // 56: messaging_pb.SeaweedMessaging.LookupTopicBrokers:input_type -> messaging_pb.LookupTopicBrokersRequest
+	8,  // 56: messaging_pb.SeaweedMessaging.ConfigureTopic:input_type -> messaging_pb.ConfigureTopicRequest
-	15, // 57: messaging_pb.SeaweedMessaging.AssignTopicPartitions:input_type -> messaging_pb.AssignTopicPartitionsRequest
+	12, // 57: messaging_pb.SeaweedMessaging.LookupTopicBrokers:input_type -> messaging_pb.LookupTopicBrokersRequest
-	29, // 58: messaging_pb.SeaweedMessaging.ClosePublishers:input_type -> messaging_pb.ClosePublishersRequest
+	15, // 58: messaging_pb.SeaweedMessaging.AssignTopicPartitions:input_type -> messaging_pb.AssignTopicPartitionsRequest
-	31, // 59: messaging_pb.SeaweedMessaging.CloseSubscribers:input_type -> messaging_pb.CloseSubscribersRequest
+	29, // 59: messaging_pb.SeaweedMessaging.ClosePublishers:input_type -> messaging_pb.ClosePublishersRequest
-	17, // 60: messaging_pb.SeaweedMessaging.SubscriberToSubCoordinator:input_type -> messaging_pb.SubscriberToSubCoordinatorRequest
+	31, // 60: messaging_pb.SeaweedMessaging.CloseSubscribers:input_type -> messaging_pb.CloseSubscribersRequest
-	21, // 61: messaging_pb.SeaweedMessaging.PublishMessage:input_type -> messaging_pb.PublishMessageRequest
+	17, // 61: messaging_pb.SeaweedMessaging.SubscriberToSubCoordinator:input_type -> messaging_pb.SubscriberToSubCoordinatorRequest
-	25, // 62: messaging_pb.SeaweedMessaging.SubscribeMessage:input_type -> messaging_pb.SubscribeMessageRequest
+	21, // 62: messaging_pb.SeaweedMessaging.PublishMessage:input_type -> messaging_pb.PublishMessageRequest
-	23, // 63: messaging_pb.SeaweedMessaging.PublishFollowMe:input_type -> messaging_pb.PublishFollowMeRequest
+	25, // 63: messaging_pb.SeaweedMessaging.SubscribeMessage:input_type -> messaging_pb.SubscribeMessageRequest
-	27, // 64: messaging_pb.SeaweedMessaging.SubscribeFollowMe:input_type -> messaging_pb.SubscribeFollowMeRequest
+	23, // 64: messaging_pb.SeaweedMessaging.PublishFollowMe:input_type -> messaging_pb.PublishFollowMeRequest
-	1,  // 65: messaging_pb.SeaweedMessaging.FindBrokerLeader:output_type -> messaging_pb.FindBrokerLeaderResponse
+	27, // 65: messaging_pb.SeaweedMessaging.SubscribeFollowMe:input_type -> messaging_pb.SubscribeFollowMeRequest
-	5,  // 66: messaging_pb.SeaweedMessaging.PublisherToPubBalancer:output_type -> messaging_pb.PublisherToPubBalancerResponse
+	1,  // 66: messaging_pb.SeaweedMessaging.FindBrokerLeader:output_type -> messaging_pb.FindBrokerLeaderResponse
-	7,  // 67: messaging_pb.SeaweedMessaging.BalanceTopics:output_type -> messaging_pb.BalanceTopicsResponse
+	5,  // 67: messaging_pb.SeaweedMessaging.PublisherToPubBalancer:output_type -> messaging_pb.PublisherToPubBalancerResponse
-	11, // 68: messaging_pb.SeaweedMessaging.ListTopics:output_type -> messaging_pb.ListTopicsResponse
+	7,  // 68: messaging_pb.SeaweedMessaging.BalanceTopics:output_type -> messaging_pb.BalanceTopicsResponse
-	9,  // 69: messaging_pb.SeaweedMessaging.ConfigureTopic:output_type -> messaging_pb.ConfigureTopicResponse
+	11, // 69: messaging_pb.SeaweedMessaging.ListTopics:output_type -> messaging_pb.ListTopicsResponse
-	13, // 70: messaging_pb.SeaweedMessaging.LookupTopicBrokers:output_type -> messaging_pb.LookupTopicBrokersResponse
+	9,  // 70: messaging_pb.SeaweedMessaging.ConfigureTopic:output_type -> messaging_pb.ConfigureTopicResponse
-	16, // 71: messaging_pb.SeaweedMessaging.AssignTopicPartitions:output_type -> messaging_pb.AssignTopicPartitionsResponse
+	13, // 71: messaging_pb.SeaweedMessaging.LookupTopicBrokers:output_type -> messaging_pb.LookupTopicBrokersResponse
-	30, // 72: messaging_pb.SeaweedMessaging.ClosePublishers:output_type -> messaging_pb.ClosePublishersResponse
+	16, // 72: messaging_pb.SeaweedMessaging.AssignTopicPartitions:output_type -> messaging_pb.AssignTopicPartitionsResponse
-	32, // 73: messaging_pb.SeaweedMessaging.CloseSubscribers:output_type -> messaging_pb.CloseSubscribersResponse
+	30, // 73: messaging_pb.SeaweedMessaging.ClosePublishers:output_type -> messaging_pb.ClosePublishersResponse
-	18, // 74: messaging_pb.SeaweedMessaging.SubscriberToSubCoordinator:output_type -> messaging_pb.SubscriberToSubCoordinatorResponse
+	32, // 74: messaging_pb.SeaweedMessaging.CloseSubscribers:output_type -> messaging_pb.CloseSubscribersResponse
-	22, // 75: messaging_pb.SeaweedMessaging.PublishMessage:output_type -> messaging_pb.PublishMessageResponse
+	18, // 75: messaging_pb.SeaweedMessaging.SubscriberToSubCoordinator:output_type -> messaging_pb.SubscriberToSubCoordinatorResponse
-	26, // 76: messaging_pb.SeaweedMessaging.SubscribeMessage:output_type -> messaging_pb.SubscribeMessageResponse
+	22, // 76: messaging_pb.SeaweedMessaging.PublishMessage:output_type -> messaging_pb.PublishMessageResponse
-	24, // 77: messaging_pb.SeaweedMessaging.PublishFollowMe:output_type -> messaging_pb.PublishFollowMeResponse
+	26, // 77: messaging_pb.SeaweedMessaging.SubscribeMessage:output_type -> messaging_pb.SubscribeMessageResponse
-	28, // 78: messaging_pb.SeaweedMessaging.SubscribeFollowMe:output_type -> messaging_pb.SubscribeFollowMeResponse
+	24, // 78: messaging_pb.SeaweedMessaging.PublishFollowMe:output_type -> messaging_pb.PublishFollowMeResponse
-	65, // [65:79] is the sub-list for method output_type
+	28, // 79: messaging_pb.SeaweedMessaging.SubscribeFollowMe:output_type -> messaging_pb.SubscribeFollowMeResponse
-	51, // [51:65] is the sub-list for method input_type
+	66, // [66:80] is the sub-list for method output_type
-	51, // [51:51] is the sub-list for extension type_name
+	52, // [52:66] is the sub-list for method input_type
-	51, // [51:51] is the sub-list for extension extendee
+	52, // [52:52] is the sub-list for extension type_name
-	0,  // [0:51] is the sub-list for field type_name
+	52, // [52:52] is the sub-list for extension extendee
+	0,  // [0:52] is the sub-list for field type_name
 }
 
 func init() { file_mq_broker_proto_init() }

weed/pb/mq_schema.proto

@@ -24,17 +24,17 @@ message Offset {
     repeated PartitionOffset partition_offsets = 2;
 }
 
-enum PartitionOffsetStartType {
+enum OffsetType {
-    EARLIEST = 0;
+    RESUME_OR_EARLIEST = 0;
-    EARLIEST_IN_MEMORY = 1;
+    RESET_TO_EARLIEST = 5;
-    LATEST = 2;
+    EXACT_TS_NS = 10;
+    RESET_TO_LATEST = 15;
+    RESUME_OR_LATEST = 20;
 }
 
 message PartitionOffset {
     Partition partition = 1;
     int64 start_ts_ns = 2;
-    int64 stop_ts_ns = 3;
-    PartitionOffsetStartType start_type = 4;
 }
 
 ///////////////////////////

weed/pb/schema_pb/mq_schema.pb.go

@@ -20,52 +20,58 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-type PartitionOffsetStartType int32
+type OffsetType int32
 
 const (
-	PartitionOffsetStartType_EARLIEST           PartitionOffsetStartType = 0
+	OffsetType_RESET_TO_EARLIEST  OffsetType = 0
-	PartitionOffsetStartType_EARLIEST_IN_MEMORY PartitionOffsetStartType = 1
+	OffsetType_RESET_TO_LATEST    OffsetType = 2
-	PartitionOffsetStartType_LATEST             PartitionOffsetStartType = 2
+	OffsetType_EXACT_TS_NS        OffsetType = 3
+	OffsetType_RESUME_OR_EARLIEST OffsetType = 4
+	OffsetType_RESUME_OR_LATEST   OffsetType = 5
 )
 
-// Enum value maps for PartitionOffsetStartType.
+// Enum value maps for OffsetType.
 var (
-	PartitionOffsetStartType_name = map[int32]string{
+	OffsetType_name = map[int32]string{
-		0: "EARLIEST",
+		0: "RESET_TO_EARLIEST",
-		1: "EARLIEST_IN_MEMORY",
+		2: "RESET_TO_LATEST",
-		2: "LATEST",
+		3: "EXACT_TS_NS",
+		4: "RESUME_OR_EARLIEST",
+		5: "RESUME_OR_LATEST",
 	}
-	PartitionOffsetStartType_value = map[string]int32{
+	OffsetType_value = map[string]int32{
-		"EARLIEST":           0,
+		"RESET_TO_EARLIEST":  0,
-		"EARLIEST_IN_MEMORY": 1,
+		"RESET_TO_LATEST":    2,
-		"LATEST":             2,
+		"EXACT_TS_NS":        3,
+		"RESUME_OR_EARLIEST": 4,
+		"RESUME_OR_LATEST":   5,
 	}
 )
 
-func (x PartitionOffsetStartType) Enum() *PartitionOffsetStartType {
+func (x OffsetType) Enum() *OffsetType {
-	p := new(PartitionOffsetStartType)
+	p := new(OffsetType)
 	*p = x
 	return p
 }
 
-func (x PartitionOffsetStartType) String() string {
+func (x OffsetType) String() string {
 	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
 }
 
-func (PartitionOffsetStartType) Descriptor() protoreflect.EnumDescriptor {
+func (OffsetType) Descriptor() protoreflect.EnumDescriptor {
 	return file_mq_schema_proto_enumTypes[0].Descriptor()
 }
 
-func (PartitionOffsetStartType) Type() protoreflect.EnumType {
+func (OffsetType) Type() protoreflect.EnumType {
 	return &file_mq_schema_proto_enumTypes[0]
 }
 
-func (x PartitionOffsetStartType) Number() protoreflect.EnumNumber {
+func (x OffsetType) Number() protoreflect.EnumNumber {
 	return protoreflect.EnumNumber(x)
 }
 
-// Deprecated: Use PartitionOffsetStartType.Descriptor instead.
+// Deprecated: Use OffsetType.Descriptor instead.
-func (PartitionOffsetStartType) EnumDescriptor() ([]byte, []int) {
+func (OffsetType) EnumDescriptor() ([]byte, []int) {
 	return file_mq_schema_proto_rawDescGZIP(), []int{0}
 }
 
@@ -316,10 +322,8 @@ type PartitionOffset struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Partition *Partition               `protobuf:"bytes,1,opt,name=partition,proto3" json:"partition,omitempty"`
+	Partition *Partition `protobuf:"bytes,1,opt,name=partition,proto3" json:"partition,omitempty"`
-	StartTsNs int64                    `protobuf:"varint,2,opt,name=start_ts_ns,json=startTsNs,proto3" json:"start_ts_ns,omitempty"`
+	StartTsNs int64      `protobuf:"varint,2,opt,name=start_ts_ns,json=startTsNs,proto3" json:"start_ts_ns,omitempty"`
-	StopTsNs  int64                    `protobuf:"varint,3,opt,name=stop_ts_ns,json=stopTsNs,proto3" json:"stop_ts_ns,omitempty"`
-	StartType PartitionOffsetStartType `protobuf:"varint,4,opt,name=start_type,json=startType,proto3,enum=schema_pb.PartitionOffsetStartType" json:"start_type,omitempty"`
 }
 
 func (x *PartitionOffset) Reset() {
@@ -368,20 +372,6 @@ func (x *PartitionOffset) GetStartTsNs() int64 {
 	return 0
 }
 
-func (x *PartitionOffset) GetStopTsNs() int64 {
-	if x != nil {
-		return x.StopTsNs
-	}
-	return 0
-}
-
-func (x *PartitionOffset) GetStartType() PartitionOffsetStartType {
-	if x != nil {
-		return x.StartType
-	}
-	return PartitionOffsetStartType_EARLIEST
-}
-
 type RecordType struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -951,100 +941,96 @@ var file_mq_schema_proto_rawDesc = []byte{
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 }
 
 var (
@@ -1062,42 +1048,41 @@ func file_mq_schema_proto_rawDescGZIP() []byte {
 var file_mq_schema_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
 var file_mq_schema_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
 var file_mq_schema_proto_goTypes = []any{
-	(PartitionOffsetStartType)(0), // 0: schema_pb.PartitionOffsetStartType
+	(OffsetType)(0),         // 0: schema_pb.OffsetType
-	(ScalarType)(0),               // 1: schema_pb.ScalarType
+	(ScalarType)(0),         // 1: schema_pb.ScalarType
-	(*Topic)(nil),                 // 2: schema_pb.Topic
+	(*Topic)(nil),           // 2: schema_pb.Topic
-	(*Partition)(nil),             // 3: schema_pb.Partition
+	(*Partition)(nil),       // 3: schema_pb.Partition
-	(*Offset)(nil),                // 4: schema_pb.Offset
+	(*Offset)(nil),          // 4: schema_pb.Offset
-	(*PartitionOffset)(nil),       // 5: schema_pb.PartitionOffset
+	(*PartitionOffset)(nil), // 5: schema_pb.PartitionOffset
-	(*RecordType)(nil),            // 6: schema_pb.RecordType
+	(*RecordType)(nil),      // 6: schema_pb.RecordType
-	(*Field)(nil),                 // 7: schema_pb.Field
+	(*Field)(nil),           // 7: schema_pb.Field
-	(*Type)(nil),                  // 8: schema_pb.Type
+	(*Type)(nil),            // 8: schema_pb.Type
-	(*ListType)(nil),              // 9: schema_pb.ListType
+	(*ListType)(nil),        // 9: schema_pb.ListType
-	(*RecordValue)(nil),           // 10: schema_pb.RecordValue
+	(*RecordValue)(nil),     // 10: schema_pb.RecordValue
-	(*Value)(nil),                 // 11: schema_pb.Value
+	(*Value)(nil),           // 11: schema_pb.Value
-	(*ListValue)(nil),             // 12: schema_pb.ListValue
+	(*ListValue)(nil),       // 12: schema_pb.ListValue
-	nil,                           // 13: schema_pb.RecordValue.FieldsEntry
+	nil,                     // 13: schema_pb.RecordValue.FieldsEntry
 }
 var file_mq_schema_proto_depIdxs = []int32{
 	2,  // 0: schema_pb.Offset.topic:type_name -> schema_pb.Topic
 	5,  // 1: schema_pb.Offset.partition_offsets:type_name -> schema_pb.PartitionOffset
 	3,  // 2: schema_pb.PartitionOffset.partition:type_name -> schema_pb.Partition
-	0,  // 3: schema_pb.PartitionOffset.start_type:type_name -> schema_pb.PartitionOffsetStartType
+	7,  // 3: schema_pb.RecordType.fields:type_name -> schema_pb.Field
-	7,  // 4: schema_pb.RecordType.fields:type_name -> schema_pb.Field
+	8,  // 4: schema_pb.Field.type:type_name -> schema_pb.Type
-	8,  // 5: schema_pb.Field.type:type_name -> schema_pb.Type
+	1,  // 5: schema_pb.Type.scalar_type:type_name -> schema_pb.ScalarType
-	1,  // 6: schema_pb.Type.scalar_type:type_name -> schema_pb.ScalarType
+	6,  // 6: schema_pb.Type.record_type:type_name -> schema_pb.RecordType
-	6,  // 7: schema_pb.Type.record_type:type_name -> schema_pb.RecordType
+	9,  // 7: schema_pb.Type.list_type:type_name -> schema_pb.ListType
-	9,  // 8: schema_pb.Type.list_type:type_name -> schema_pb.ListType
+	8,  // 8: schema_pb.ListType.element_type:type_name -> schema_pb.Type
-	8,  // 9: schema_pb.ListType.element_type:type_name -> schema_pb.Type
+	13, // 9: schema_pb.RecordValue.fields:type_name -> schema_pb.RecordValue.FieldsEntry
-	13, // 10: schema_pb.RecordValue.fields:type_name -> schema_pb.RecordValue.FieldsEntry
+	12, // 10: schema_pb.Value.list_value:type_name -> schema_pb.ListValue
-	12, // 11: schema_pb.Value.list_value:type_name -> schema_pb.ListValue
+	10, // 11: schema_pb.Value.record_value:type_name -> schema_pb.RecordValue
-	10, // 12: schema_pb.Value.record_value:type_name -> schema_pb.RecordValue
+	11, // 12: schema_pb.ListValue.values:type_name -> schema_pb.Value
-	11, // 13: schema_pb.ListValue.values:type_name -> schema_pb.Value
+	11, // 13: schema_pb.RecordValue.FieldsEntry.value:type_name -> schema_pb.Value
-	11, // 14: schema_pb.RecordValue.FieldsEntry.value:type_name -> schema_pb.Value
+	14, // [14:14] is the sub-list for method output_type
-	15, // [15:15] is the sub-list for method output_type
+	14, // [14:14] is the sub-list for method input_type
-	15, // [15:15] is the sub-list for method input_type
+	14, // [14:14] is the sub-list for extension type_name
-	15, // [15:15] is the sub-list for extension type_name
+	14, // [14:14] is the sub-list for extension extendee
-	15, // [15:15] is the sub-list for extension extendee
+	0,  // [0:14] is the sub-list for field type_name
-	0,  // [0:15] is the sub-list for field type_name
 }
 
 func init() { file_mq_schema_proto_init() }

weed/util/log_buffer/log_buffer.go

@@ -46,7 +46,7 @@ type LogBuffer struct {
 	isStopping        *atomic.Bool
 	isAllFlushed      bool
 	flushChan         chan *dataToFlush
-	LastTsNs          int64
+	LastTsNs          atomic.Int64
 	sync.RWMutex
 }
 
@@ -95,12 +95,12 @@ func (logBuffer *LogBuffer) AddDataToBuffer(partitionKey, data []byte, processin
 	} else {
 		ts = time.Unix(0, processingTsNs)
 	}
-	if logBuffer.LastTsNs >= processingTsNs {
+	if logBuffer.LastTsNs.Load() >= processingTsNs {
 		// this is unlikely to happen, but just in case
-		processingTsNs = logBuffer.LastTsNs + 1
+		processingTsNs = logBuffer.LastTsNs.Add(1)
 		ts = time.Unix(0, processingTsNs)
 	}
-	logBuffer.LastTsNs = processingTsNs
+	logBuffer.LastTsNs.Store(processingTsNs)
 	logEntry := &filer_pb.LogEntry{
 		TsNs:             processingTsNs,
 		PartitionKeyHash: util.HashToInt32(partitionKey),

weed/util/log_buffer/log_read.go

@@ -66,17 +66,10 @@ func (logBuffer *LogBuffer) LoopProcessLogData(readerName string, startPosition
 				isDone = true
 				return
 			}
-			logBuffer.RLock()
+			lastTsNs := logBuffer.LastTsNs.Load()
-			lastTsNs := logBuffer.LastTsNs
-			logBuffer.RUnlock()
-			loopTsNs := lastTsNs // make a copy
 
-			for lastTsNs == loopTsNs {
+			for lastTsNs == logBuffer.LastTsNs.Load() {
 				if waitForDataFn() {
-					// Update loopTsNs and loop again
-					logBuffer.RLock()
-					loopTsNs = logBuffer.LastTsNs
-					logBuffer.RUnlock()
 					continue
 				} else {
 					isDone = true