Revert "Revert "Merge branch 'master' into sub""

This reverts commit 0bb97709d4.

weed/mq/balancer/allocate.go

@@ -0,0 +1,20 @@
+package balancer
+
+import (
+	cmap "github.com/orcaman/concurrent-map/v2"
+	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
+)
+
+func allocateTopicPartitions(brokers cmap.ConcurrentMap[string, *BrokerStats], partitionCount int) (assignments []*mq_pb.BrokerPartitionAssignment) {
+	return []*mq_pb.BrokerPartitionAssignment{
+		{
+			LeaderBroker:    "localhost:17777",
+			FollowerBrokers: []string{"localhost:17777"},
+			Partition: &mq_pb.Partition{
+				RingSize:   MaxPartitionCount,
+				RangeStart: 0,
+				RangeStop:  MaxPartitionCount,
+			},
+		},
+	}
+}