correctly wait for the publisher to finish

weed/mq/client/pub_client/scheduler.go

@@ -12,6 +12,7 @@ import (
 	"log"
 	"sort"
 	"sync"
+	"sync/atomic"
 	"time"
 )
 
@@ -159,6 +160,8 @@ func (p *TopicPublisher) doPublishToPartition(job *EachPartitionPublishJob) erro
 		return fmt.Errorf("init response error: %v", resp.Error)
 	}
 
+	var publishedTsNs int64
+	hasMoreData := int32(1)
 	var wg sync.WaitGroup
 	wg.Add(1)
 	go func() {
@@ -183,6 +186,9 @@ func (p *TopicPublisher) doPublishToPartition(job *EachPartitionPublishJob) erro
 			if ackResp.AckSequence > 0 {
 				log.Printf("ack %d", ackResp.AckSequence)
 			}
+			if atomic.LoadInt64(&publishedTsNs) == ackResp.AckSequence && atomic.LoadInt32(&hasMoreData) == 0 {
+				return
+			}
 		}
 	}()
 
@@ -196,14 +202,17 @@ func (p *TopicPublisher) doPublishToPartition(job *EachPartitionPublishJob) erro
 			return fmt.Errorf("send publish data: %v", err)
 		}
 		publishCounter++
+		atomic.StoreInt64(&publishedTsNs, data.TsNs)
+	}
+	atomic.StoreInt32(&hasMoreData, 0)
+	if publishCounter > 0 {
+		wg.Wait()
+	} else {
+		// CloseSend would cancel the context on the server side
+		if err := publishClient.CloseSend(); err != nil {
+			return fmt.Errorf("close send: %v", err)
+		}
 	}
-
-	// CloseSend would cancel the context on the server side
-	//if err := publishClient.CloseSend(); err != nil {
-	//	return fmt.Errorf("close send: %v", err)
-	//}
-
-	wg.Wait()
 
 	log.Printf("published %d messages to %v for topic partition %+v", publishCounter, job.LeaderBroker, job.Partition)