diff --git a/other/java/client/src/main/proto/filer.proto b/other/java/client/src/main/proto/filer.proto
index 50aee1b0e..dd052b198 100644
--- a/other/java/client/src/main/proto/filer.proto
+++ b/other/java/client/src/main/proto/filer.proto
@@ -69,9 +69,11 @@ service SeaweedFiler {
     rpc CacheRemoteObjectToLocalCluster (CacheRemoteObjectToLocalClusterRequest) returns (CacheRemoteObjectToLocalClusterResponse) {
     }
 
-    rpc Lock(LockRequest) returns (LockResponse) {
+    rpc DistributedLock(LockRequest) returns (LockResponse) {
     }
-    rpc Unlock(UnlockRequest) returns (UnlockResponse) {
+    rpc DistributedUnlock(UnlockRequest) returns (UnlockResponse) {
+    }
+    rpc FindLockOwner(FindLockOwnerRequest) returns (FindLockOwnerResponse) {
     }
     // distributed lock management internal use only
     rpc TransferLocks(TransferLocksRequest) returns (TransferLocksResponse) {
@@ -445,6 +447,7 @@ message LockRequest {
     int64 seconds_to_lock = 2;
     string renew_token = 3;
     bool is_moved = 4;
+    string owner = 5;
 }
 message LockResponse {
     string renew_token = 1;
@@ -460,10 +463,18 @@ message UnlockResponse {
     string error = 1;
     string moved_to = 2;
 }
+message FindLockOwnerRequest {
+    string name = 1;
+    bool is_moved = 2;
+}
+message FindLockOwnerResponse {
+    string owner = 1;
+}
 message Lock {
     string name = 1;
     string renew_token = 2;
     int64 expired_at_ns = 3;
+    string owner = 4;
 }
 message TransferLocksRequest {
     repeated Lock locks = 1;
diff --git a/weed/cluster/lock_client.go b/weed/cluster/lock_client.go
index c76b3c9bd..57198c865 100644
--- a/weed/cluster/lock_client.go
+++ b/weed/cluster/lock_client.go
@@ -16,13 +16,15 @@ type LockClient struct {
 	grpcDialOption  grpc.DialOption
 	maxLockDuration time.Duration
 	sleepDuration   time.Duration
+	seedFiler       pb.ServerAddress
 }
 
-func NewLockClient(grpcDialOption grpc.DialOption) *LockClient {
+func NewLockClient(grpcDialOption grpc.DialOption, seedFiler pb.ServerAddress) *LockClient {
 	return &LockClient{
 		grpcDialOption:  grpcDialOption,
 		maxLockDuration: 5 * time.Second,
-		sleepDuration:   4 * time.Millisecond,
+		sleepDuration:   2473 * time.Millisecond,
+		seedFiler:       seedFiler,
 	}
 }
 
@@ -34,25 +36,62 @@ type LiveLock struct {
 	cancelCh       chan struct{}
 	grpcDialOption grpc.DialOption
 	isLocked       bool
-}
-
-// NewLockWithTimeout locks the key with the given duration
-func (lc *LockClient) NewLockWithTimeout(filer pb.ServerAddress, key string, lockDuration time.Duration) (lock *LiveLock) {
-	return lc.doNewLock(filer, key, lockDuration)
+	owner          string
+	lc             *LockClient
 }
 
 // NewLock creates a lock with a very long duration
-func (lc *LockClient) NewLock(filer pb.ServerAddress, key string) (lock *LiveLock) {
-	return lc.doNewLock(filer, key, lock_manager.MaxDuration)
+func (lc *LockClient) NewLock(key string, owner string) (lock *LiveLock) {
+	return lc.doNewLock(key, lock_manager.MaxDuration, owner)
 }
 
-func (lc *LockClient) doNewLock(filer pb.ServerAddress, key string, lockDuration time.Duration) (lock *LiveLock) {
+// StartLock starts a goroutine to lock the key and returns immediately.
+func (lc *LockClient) StartLock(key string, owner string) (lock *LiveLock) {
 	lock = &LiveLock{
 		key:            key,
-		filer:          filer,
+		filer:          lc.seedFiler,
+		cancelCh:       make(chan struct{}),
+		expireAtNs:     time.Now().Add(lock_manager.MaxDuration).UnixNano(),
+		grpcDialOption: lc.grpcDialOption,
+		owner:          owner,
+		lc:             lc,
+	}
+	go func() {
+		util.RetryForever("create lock:"+key, func() error {
+			errorMessage, err := lock.doLock(lock_manager.MaxDuration)
+			if err != nil {
+				glog.Infof("create lock %s: %s", key, err)
+				time.Sleep(time.Second)
+				return err
+			}
+			if errorMessage != "" {
+				glog.Infof("create lock %s: %s", key, errorMessage)
+				time.Sleep(time.Second)
+				return fmt.Errorf("%v", errorMessage)
+			}
+			lock.isLocked = true
+			return nil
+		}, func(err error) (shouldContinue bool) {
+			if err != nil {
+				glog.Warningf("create lock %s: %s", key, err)
+				time.Sleep(time.Second)
+			}
+			return lock.renewToken == ""
+		})
+		lc.keepLock(lock)
+	}()
+	return
+}
+
+func (lc *LockClient) doNewLock(key string, lockDuration time.Duration, owner string) (lock *LiveLock) {
+	lock = &LiveLock{
+		key:            key,
+		filer:          lc.seedFiler,
 		cancelCh:       make(chan struct{}),
 		expireAtNs:     time.Now().Add(lockDuration).UnixNano(),
 		grpcDialOption: lc.grpcDialOption,
+		owner:          owner,
+		lc:             lc,
 	}
 	var needRenewal bool
 	if lockDuration > lc.maxLockDuration {
@@ -62,11 +101,14 @@ func (lc *LockClient) doNewLock(filer pb.ServerAddress, key string, lockDuration
 	util.RetryForever("create lock:"+key, func() error {
 		errorMessage, err := lock.doLock(lockDuration)
 		if err != nil {
+			time.Sleep(time.Second)
 			return err
 		}
 		if errorMessage != "" {
+			time.Sleep(time.Second)
 			return fmt.Errorf("%v", errorMessage)
 		}
+		lock.isLocked = true
 		return nil
 	}, func(err error) (shouldContinue bool) {
 		if err != nil {
@@ -75,8 +117,6 @@ func (lc *LockClient) doNewLock(filer pb.ServerAddress, key string, lockDuration
 		return lock.renewToken == ""
 	})
 
-	lock.isLocked = true
-
 	if needRenewal {
 		go lc.keepLock(lock)
 	}
@@ -88,10 +128,13 @@ func (lock *LiveLock) IsLocked() bool {
 	return lock.isLocked
 }
 
-func (lock *LiveLock) Unlock() error {
+func (lock *LiveLock) StopLock() error {
 	close(lock.cancelCh)
+	if !lock.isLocked {
+		return nil
+	}
 	return pb.WithFilerClient(false, 0, lock.filer, lock.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
-		_, err := client.Unlock(context.Background(), &filer_pb.UnlockRequest{
+		_, err := client.DistributedUnlock(context.Background(), &filer_pb.UnlockRequest{
 			Name:       lock.key,
 			RenewToken: lock.renewToken,
 		})
@@ -100,9 +143,10 @@ func (lock *LiveLock) Unlock() error {
 }
 
 func (lc *LockClient) keepLock(lock *LiveLock) {
+	ticker := time.Tick(lc.sleepDuration)
 	for {
 		select {
-		case <-time.After(lc.sleepDuration):
+		case <-ticker:
 			// renew the lock if lock.expireAtNs is still greater than now
 			util.RetryForever("keep lock:"+lock.key, func() error {
 				lockDuration := time.Duration(lock.expireAtNs-time.Now().UnixNano()) * time.Nanosecond
@@ -116,10 +160,12 @@ func (lc *LockClient) keepLock(lock *LiveLock) {
 				errorMessage, err := lock.doLock(lockDuration)
 				if err != nil {
 					lock.isLocked = false
+					time.Sleep(time.Second)
 					return err
 				}
 				if errorMessage != "" {
 					lock.isLocked = false
+					time.Sleep(time.Second)
 					return fmt.Errorf("%v", errorMessage)
 				}
 				return nil
@@ -141,11 +187,12 @@ func (lc *LockClient) keepLock(lock *LiveLock) {
 
 func (lock *LiveLock) doLock(lockDuration time.Duration) (errorMessage string, err error) {
 	err = pb.WithFilerClient(false, 0, lock.filer, lock.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
-		resp, err := client.Lock(context.Background(), &filer_pb.LockRequest{
+		resp, err := client.DistributedLock(context.Background(), &filer_pb.LockRequest{
 			Name:          lock.key,
 			SecondsToLock: int64(lockDuration.Seconds()),
 			RenewToken:    lock.renewToken,
 			IsMoved:       false,
+			Owner:         lock.owner,
 		})
 		if err == nil {
 			lock.renewToken = resp.RenewToken
@@ -154,6 +201,7 @@ func (lock *LiveLock) doLock(lockDuration time.Duration) (errorMessage string, e
 			errorMessage = resp.Error
 			if resp.MovedTo != "" {
 				lock.filer = pb.ServerAddress(resp.MovedTo)
+				lock.lc.seedFiler = lock.filer
 			}
 		}
 		return err
diff --git a/weed/cluster/lock_manager/distributed_lock_manager.go b/weed/cluster/lock_manager/distributed_lock_manager.go
index 0378d02b2..9479b38b0 100644
--- a/weed/cluster/lock_manager/distributed_lock_manager.go
+++ b/weed/cluster/lock_manager/distributed_lock_manager.go
@@ -24,23 +24,19 @@ func NewDistributedLockManager(host pb.ServerAddress) *DistributedLockManager {
 	}
 }
 
-func (dlm *DistributedLockManager) Lock(key string, token string) (renewToken string, movedTo pb.ServerAddress, err error) {
-	return dlm.LockWithTimeout(key, MaxDuration, token)
-}
-
-func (dlm *DistributedLockManager) LockWithTimeout(key string, expiredAtNs int64, token string) (renewToken string, movedTo pb.ServerAddress, err error) {
-	movedTo, err = dlm.FindLockOwner(key)
+func (dlm *DistributedLockManager) LockWithTimeout(key string, expiredAtNs int64, token string, owner string) (renewToken string, movedTo pb.ServerAddress, err error) {
+	movedTo, err = dlm.findLockOwningFiler(key)
 	if err != nil {
 		return
 	}
 	if movedTo != dlm.Host {
 		return
 	}
-	renewToken, err = dlm.lockManager.Lock(key, expiredAtNs, token)
+	renewToken, err = dlm.lockManager.Lock(key, expiredAtNs, token, owner)
 	return
 }
 
-func (dlm *DistributedLockManager) FindLockOwner(key string) (movedTo pb.ServerAddress, err error) {
+func (dlm *DistributedLockManager) findLockOwningFiler(key string) (movedTo pb.ServerAddress, err error) {
 	servers := dlm.LockRing.GetSnapshot()
 	if servers == nil {
 		err = NoLockServerError
@@ -51,6 +47,18 @@ func (dlm *DistributedLockManager) FindLockOwner(key string) (movedTo pb.ServerA
 	return
 }
 
+func (dlm *DistributedLockManager) FindLockOwner(key string) (owner string, movedTo pb.ServerAddress, err error) {
+	movedTo, err = dlm.findLockOwningFiler(key)
+	if err != nil {
+		return
+	}
+	if movedTo != dlm.Host {
+		return
+	}
+	owner, err = dlm.lockManager.GetLockOwner(key)
+	return
+}
+
 func (dlm *DistributedLockManager) Unlock(key string, token string) (movedTo pb.ServerAddress, err error) {
 	servers := dlm.LockRing.GetSnapshot()
 	if servers == nil {
@@ -69,8 +77,8 @@ func (dlm *DistributedLockManager) Unlock(key string, token string) (movedTo pb.
 
 // InsertLock is used to insert a lock to a server unconditionally
 // It is used when a server is down and the lock is moved to another server
-func (dlm *DistributedLockManager) InsertLock(key string, expiredAtNs int64, token string) {
-	dlm.lockManager.InsertLock(key, expiredAtNs, token)
+func (dlm *DistributedLockManager) InsertLock(key string, expiredAtNs int64, token string, owner string) {
+	dlm.lockManager.InsertLock(key, expiredAtNs, token, owner)
 }
 func (dlm *DistributedLockManager) SelectNotOwnedLocks(servers []pb.ServerAddress) (locks []*Lock) {
 	return dlm.lockManager.SelectLocks(func(key string) bool {
diff --git a/weed/cluster/lock_manager/lock_manager.go b/weed/cluster/lock_manager/lock_manager.go
index 6943a8084..0e3e47ba4 100644
--- a/weed/cluster/lock_manager/lock_manager.go
+++ b/weed/cluster/lock_manager/lock_manager.go
@@ -20,6 +20,7 @@ type Lock struct {
 	Token       string
 	ExpiredAtNs int64
 	Key         string // only used for moving locks
+	Owner       string
 }
 
 func NewLockManager() *LockManager {
@@ -30,7 +31,7 @@ func NewLockManager() *LockManager {
 	return t
 }
 
-func (lm *LockManager) Lock(path string, expiredAtNs int64, token string) (renewToken string, err error) {
+func (lm *LockManager) Lock(path string, expiredAtNs int64, token string, owner string) (renewToken string, err error) {
 	lm.locks.Compute(path, func(oldValue *Lock, loaded bool) (newValue *Lock, delete bool) {
 		if oldValue != nil {
 			if oldValue.ExpiredAtNs > 0 && oldValue.ExpiredAtNs < time.Now().UnixNano() {
@@ -41,14 +42,14 @@ func (lm *LockManager) Lock(path string, expiredAtNs int64, token string) (renew
 				} else {
 					// new lock
 					renewToken = uuid.New().String()
-					return &Lock{Token: renewToken, ExpiredAtNs: expiredAtNs}, false
+					return &Lock{Token: renewToken, ExpiredAtNs: expiredAtNs, Owner: owner}, false
 				}
 			}
 			// not expired
 			if oldValue.Token == token {
 				// token matches, renew the lock
 				renewToken = uuid.New().String()
-				return &Lock{Token: renewToken, ExpiredAtNs: expiredAtNs}, false
+				return &Lock{Token: renewToken, ExpiredAtNs: expiredAtNs, Owner: owner}, false
 			} else {
 				err = LockErrorTokenMismatch
 				return oldValue, false
@@ -57,7 +58,7 @@ func (lm *LockManager) Lock(path string, expiredAtNs int64, token string) (renew
 			if token == "" {
 				// new lock
 				renewToken = uuid.New().String()
-				return &Lock{Token: renewToken, ExpiredAtNs: expiredAtNs}, false
+				return &Lock{Token: renewToken, ExpiredAtNs: expiredAtNs, Owner: owner}, false
 			} else {
 				err = LockErrorNonEmptyTokenOnNewLock
 				return nil, false
@@ -132,6 +133,18 @@ func (lm *LockManager) SelectLocks(selectFn func(key string) bool) (locks []*Loc
 }
 
 // InsertLock inserts a lock unconditionally
-func (lm *LockManager) InsertLock(path string, expiredAtNs int64, token string) {
-	lm.locks.Store(path, &Lock{Token: token, ExpiredAtNs: expiredAtNs})
+func (lm *LockManager) InsertLock(path string, expiredAtNs int64, token string, owner string) {
+	lm.locks.Store(path, &Lock{Token: token, ExpiredAtNs: expiredAtNs, Owner: owner})
+}
+
+func (lm *LockManager) GetLockOwner(key string) (owner string, err error) {
+	lm.locks.Range(func(k string, lock *Lock) bool {
+		if k == key {
+			owner = lock.Owner
+			return false
+		}
+		return true
+	})
+	return
+
 }
diff --git a/weed/mq/balancer/balancer.go b/weed/mq/balancer/balancer.go
index 4c5f8f3c8..74871925f 100644
--- a/weed/mq/balancer/balancer.go
+++ b/weed/mq/balancer/balancer.go
@@ -1,7 +1,6 @@
 package balancer
 
 import (
-	"fmt"
 	cmap "github.com/orcaman/concurrent-map/v2"
 )
 
@@ -10,24 +9,10 @@ type Balancer struct {
 }
 type BrokerStats struct {
 	TopicPartitionCount int32
-	MessageCount        int64
-	BytesCount          int64
+	ConsumerCount       int32
 	CpuUsagePercent     int32
 }
 
-type TopicPartition struct {
-	Topic      string
-	RangeStart int32
-	RangeStop  int32
-}
-
-type TopicPartitionStats struct {
-	TopicPartition
-	Throughput          int64
-	ConsumerCount       int64
-	TopicPartitionCount int64
-}
-
 func NewBalancer() *Balancer {
 	return &Balancer{
 		Brokers: cmap.New[*BrokerStats](),
@@ -37,7 +22,3 @@ func NewBalancer() *Balancer {
 func NewBrokerStats() *BrokerStats {
 	return &BrokerStats{}
 }
-
-func (tp *TopicPartition) String() string {
-	return fmt.Sprintf("%v-%04d-%04d", tp.Topic, tp.RangeStart, tp.RangeStop)
-}
diff --git a/weed/mq/broker/broker_grpc_balancer.go b/weed/mq/broker/broker_grpc_balancer.go
index cdc1f2ace..c4a0357a2 100644
--- a/weed/mq/broker/broker_grpc_balancer.go
+++ b/weed/mq/broker/broker_grpc_balancer.go
@@ -1,39 +1,50 @@
 package broker
 
 import (
+	"github.com/seaweedfs/seaweedfs/weed/glog"
 	"github.com/seaweedfs/seaweedfs/weed/mq/balancer"
 	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
 )
 
+// BrokerConnectToBalancer receives connections from brokers and collects stats
 func (broker *MessageQueueBroker) ConnectToBalancer(stream mq_pb.SeaweedMessaging_ConnectToBalancerServer) error {
+	if !broker.lockAsBalancer.IsLocked() {
+		return status.Errorf(codes.Unavailable, "not current broker balancer")
+	}
 	req, err := stream.Recv()
 	if err != nil {
 		return err
 	}
-	response := &mq_pb.ConnectToBalancerResponse{}
+
+	// process init message
 	initMessage := req.GetInit()
 	brokerStats := balancer.NewBrokerStats()
 	if initMessage != nil {
 		broker.Balancer.Brokers.Set(initMessage.Broker, brokerStats)
 	} else {
-		response.Error = "balancer init message is empty"
-		return stream.Send(response)
+		return status.Errorf(codes.InvalidArgument, "balancer init message is empty")
 	}
 	defer func() {
 		broker.Balancer.Brokers.Remove(initMessage.Broker)
 	}()
-	stream.Send(response)
 
+	// process stats message
 	for {
 		req, err := stream.Recv()
 		if err != nil {
 			return err
 		}
+		if !broker.lockAsBalancer.IsLocked() {
+			return status.Errorf(codes.Unavailable, "not current broker balancer")
+		}
 		if receivedStats := req.GetStats(); receivedStats != nil {
 			brokerStats.TopicPartitionCount = receivedStats.TopicPartitionCount
-			brokerStats.MessageCount = receivedStats.MessageCount
-			brokerStats.BytesCount = receivedStats.BytesCount
+			brokerStats.ConsumerCount = receivedStats.ConsumerCount
 			brokerStats.CpuUsagePercent = receivedStats.CpuUsagePercent
+
+			glog.V(3).Infof("broker %s stats: %+v", initMessage.Broker, brokerStats)
 		}
 	}
 
diff --git a/weed/mq/broker/broker_server.go b/weed/mq/broker/broker_server.go
index 90c6179cb..db8329989 100644
--- a/weed/mq/broker/broker_server.go
+++ b/weed/mq/broker/broker_server.go
@@ -1,6 +1,8 @@
 package broker
 
 import (
+	"fmt"
+	"github.com/seaweedfs/seaweedfs/weed/glog"
 	"github.com/seaweedfs/seaweedfs/weed/mq/balancer"
 	"github.com/seaweedfs/seaweedfs/weed/mq/topic"
 	"time"
@@ -36,6 +38,7 @@ type MessageQueueBroker struct {
 	currentFiler      pb.ServerAddress
 	localTopicManager *topic.LocalTopicManager
 	Balancer          *balancer.Balancer
+	lockAsBalancer    *cluster.LiveLock
 }
 
 func NewMessageBroker(option *MessageQueueBrokerOption, grpcDialOption grpc.DialOption) (mqBroker *MessageQueueBroker, err error) {
@@ -57,6 +60,25 @@ func NewMessageBroker(option *MessageQueueBrokerOption, grpcDialOption grpc.Dial
 		mqBroker.OnBrokerUpdate(newNode, time.Now())
 	}
 
+	// keep connecting to balancer
+	go func() {
+		for mqBroker.currentFiler == "" {
+			time.Sleep(time.Millisecond * 237)
+		}
+		self := fmt.Sprintf("%s:%d", option.Ip, option.Port)
+		glog.V(1).Infof("broker %s found filer %s", self, mqBroker.currentFiler)
+
+		lockClient := cluster.NewLockClient(grpcDialOption, mqBroker.currentFiler)
+		mqBroker.lockAsBalancer = lockClient.StartLock(LockBrokerBalancer, self)
+		for {
+			err := mqBroker.BrokerConnectToBalancer(self)
+			if err != nil {
+				fmt.Printf("BrokerConnectToBalancer: %v\n", err)
+			}
+			time.Sleep(time.Second)
+		}
+	}()
+
 	return mqBroker, nil
 }
 
diff --git a/weed/mq/broker/broker_stats.go b/weed/mq/broker/broker_stats.go
new file mode 100644
index 000000000..20dd7039e
--- /dev/null
+++ b/weed/mq/broker/broker_stats.go
@@ -0,0 +1,74 @@
+package broker
+
+import (
+	"context"
+	"fmt"
+	"github.com/seaweedfs/seaweedfs/weed/glog"
+	"github.com/seaweedfs/seaweedfs/weed/pb"
+	"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
+	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
+	"math/rand"
+	"time"
+)
+
+const (
+	LockBrokerBalancer = "broker_balancer"
+)
+
+// BrokerConnectToBalancer connects to the broker balancer and sends stats
+func (broker *MessageQueueBroker) BrokerConnectToBalancer(self string) error {
+	// find the lock owner
+	var brokerBalancer string
+	err := broker.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
+		resp, err := client.FindLockOwner(context.Background(), &filer_pb.FindLockOwnerRequest{
+			Name: LockBrokerBalancer,
+		})
+		if err != nil {
+			return err
+		}
+		brokerBalancer = resp.Owner
+		return nil
+	})
+	if err != nil {
+		return err
+	}
+
+	glog.V(1).Infof("broker %s found balancer %s", self, brokerBalancer)
+
+	// connect to the lock owner
+	err = pb.WithBrokerGrpcClient(false, brokerBalancer, broker.grpcDialOption, func(client mq_pb.SeaweedMessagingClient) error {
+		stream, err := client.ConnectToBalancer(context.Background())
+		if err != nil {
+			return fmt.Errorf("connect to balancer %v: %v", brokerBalancer, err)
+		}
+		defer stream.CloseSend()
+		err = stream.Send(&mq_pb.ConnectToBalancerRequest{
+			Message: &mq_pb.ConnectToBalancerRequest_Init{
+				Init: &mq_pb.ConnectToBalancerRequest_InitMessage{
+					Broker: self,
+				},
+			},
+		})
+		if err != nil {
+			return fmt.Errorf("send init message: %v", err)
+		}
+
+		for {
+			stats := broker.localTopicManager.CollectStats(time.Second * 5)
+			err = stream.Send(&mq_pb.ConnectToBalancerRequest{
+				Message: &mq_pb.ConnectToBalancerRequest_Stats{
+					Stats: stats,
+				},
+			})
+			if err != nil {
+				return fmt.Errorf("send stats message: %v", err)
+			}
+
+			time.Sleep(time.Millisecond*5000 + time.Duration(rand.Intn(1000))*time.Millisecond)
+		}
+
+		return nil
+	})
+
+	return err
+}
diff --git a/weed/mq/topic/local_manager.go b/weed/mq/topic/local_manager.go
index 6e7db5d08..d0d9def19 100644
--- a/weed/mq/topic/local_manager.go
+++ b/weed/mq/topic/local_manager.go
@@ -2,6 +2,9 @@ package topic
 
 import (
 	cmap "github.com/orcaman/concurrent-map/v2"
+	"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
+	"github.com/shirou/gopsutil/v3/cpu"
+	"time"
 )
 
 // LocalTopicManager manages topics on local broker
@@ -53,3 +56,22 @@ func (manager *LocalTopicManager) RemoveTopicPartition(topic Topic, partition Pa
 	}
 	return localTopic.removePartition(partition)
 }
+
+func (manager *LocalTopicManager) CollectStats(duration time.Duration) *mq_pb.BrokerStats {
+	stats := &mq_pb.BrokerStats{}
+	manager.topics.IterCb(func(topic string, localTopic *LocalTopic) {
+		for _, localPartition := range localTopic.Partitions {
+			stats.TopicPartitionCount++
+			stats.ConsumerCount += localPartition.ConsumerCount
+		}
+	})
+
+	// collect current broker's cpu usage
+	usages, err := cpu.Percent(duration, false)
+	if err == nil && len(usages) > 0 {
+		stats.CpuUsagePercent = int32(usages[0])
+	}
+
+	return stats
+
+}
diff --git a/weed/mq/topic/local_partition.go b/weed/mq/topic/local_partition.go
index eaedb9f20..49b639dfa 100644
--- a/weed/mq/topic/local_partition.go
+++ b/weed/mq/topic/local_partition.go
@@ -14,6 +14,7 @@ type LocalPartition struct {
 	isLeader        bool
 	FollowerBrokers []pb.ServerAddress
 	logBuffer       *log_buffer.LogBuffer
+	ConsumerCount   int32
 }
 
 func NewLocalPartition(topic Topic, partition Partition, isLeader bool, followerBrokers []pb.ServerAddress) *LocalPartition {
diff --git a/weed/pb/filer.proto b/weed/pb/filer.proto
index 2058322cc..dd052b198 100644
--- a/weed/pb/filer.proto
+++ b/weed/pb/filer.proto
@@ -69,10 +69,13 @@ service SeaweedFiler {
     rpc CacheRemoteObjectToLocalCluster (CacheRemoteObjectToLocalClusterRequest) returns (CacheRemoteObjectToLocalClusterResponse) {
     }
 
-    rpc Lock(LockRequest) returns (LockResponse) {
+    rpc DistributedLock(LockRequest) returns (LockResponse) {
     }
-    rpc Unlock(UnlockRequest) returns (UnlockResponse) {
+    rpc DistributedUnlock(UnlockRequest) returns (UnlockResponse) {
     }
+    rpc FindLockOwner(FindLockOwnerRequest) returns (FindLockOwnerResponse) {
+    }
+    // distributed lock management internal use only
     rpc TransferLocks(TransferLocksRequest) returns (TransferLocksResponse) {
     }
 }
@@ -444,6 +447,7 @@ message LockRequest {
     int64 seconds_to_lock = 2;
     string renew_token = 3;
     bool is_moved = 4;
+    string owner = 5;
 }
 message LockResponse {
     string renew_token = 1;
@@ -459,10 +463,18 @@ message UnlockResponse {
     string error = 1;
     string moved_to = 2;
 }
+message FindLockOwnerRequest {
+    string name = 1;
+    bool is_moved = 2;
+}
+message FindLockOwnerResponse {
+    string owner = 1;
+}
 message Lock {
     string name = 1;
     string renew_token = 2;
     int64 expired_at_ns = 3;
+    string owner = 4;
 }
 message TransferLocksRequest {
     repeated Lock locks = 1;
diff --git a/weed/pb/filer_pb/filer.pb.go b/weed/pb/filer_pb/filer.pb.go
index a3b9ff453..6d4b3ac37 100644
--- a/weed/pb/filer_pb/filer.pb.go
+++ b/weed/pb/filer_pb/filer.pb.go
@@ -3621,6 +3621,7 @@ type LockRequest struct {
 	SecondsToLock int64  `protobuf:"varint,2,opt,name=seconds_to_lock,json=secondsToLock,proto3" json:"seconds_to_lock,omitempty"`
 	RenewToken    string `protobuf:"bytes,3,opt,name=renew_token,json=renewToken,proto3" json:"renew_token,omitempty"`
 	IsMoved       bool   `protobuf:"varint,4,opt,name=is_moved,json=isMoved,proto3" json:"is_moved,omitempty"`
+	Owner         string `protobuf:"bytes,5,opt,name=owner,proto3" json:"owner,omitempty"`
 }
 
 func (x *LockRequest) Reset() {
@@ -3683,6 +3684,13 @@ func (x *LockRequest) GetIsMoved() bool {
 	return false
 }
 
+func (x *LockRequest) GetOwner() string {
+	if x != nil {
+		return x.Owner
+	}
+	return ""
+}
+
 type LockResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -3864,6 +3872,108 @@ func (x *UnlockResponse) GetMovedTo() string {
 	return ""
 }
 
+type FindLockOwnerRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Name    string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	IsMoved bool   `protobuf:"varint,2,opt,name=is_moved,json=isMoved,proto3" json:"is_moved,omitempty"`
+}
+
+func (x *FindLockOwnerRequest) Reset() {
+	*x = FindLockOwnerRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[59]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *FindLockOwnerRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*FindLockOwnerRequest) ProtoMessage() {}
+
+func (x *FindLockOwnerRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[59]
+	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 FindLockOwnerRequest.ProtoReflect.Descriptor instead.
+func (*FindLockOwnerRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{59}
+}
+
+func (x *FindLockOwnerRequest) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *FindLockOwnerRequest) GetIsMoved() bool {
+	if x != nil {
+		return x.IsMoved
+	}
+	return false
+}
+
+type FindLockOwnerResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Owner string `protobuf:"bytes,1,opt,name=owner,proto3" json:"owner,omitempty"`
+}
+
+func (x *FindLockOwnerResponse) Reset() {
+	*x = FindLockOwnerResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[60]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *FindLockOwnerResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*FindLockOwnerResponse) ProtoMessage() {}
+
+func (x *FindLockOwnerResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[60]
+	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 FindLockOwnerResponse.ProtoReflect.Descriptor instead.
+func (*FindLockOwnerResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{60}
+}
+
+func (x *FindLockOwnerResponse) GetOwner() string {
+	if x != nil {
+		return x.Owner
+	}
+	return ""
+}
+
 type Lock struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -3872,12 +3982,13 @@ type Lock struct {
 	Name        string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
 	RenewToken  string `protobuf:"bytes,2,opt,name=renew_token,json=renewToken,proto3" json:"renew_token,omitempty"`
 	ExpiredAtNs int64  `protobuf:"varint,3,opt,name=expired_at_ns,json=expiredAtNs,proto3" json:"expired_at_ns,omitempty"`
+	Owner       string `protobuf:"bytes,4,opt,name=owner,proto3" json:"owner,omitempty"`
 }
 
 func (x *Lock) Reset() {
 	*x = Lock{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_filer_proto_msgTypes[59]
+		mi := &file_filer_proto_msgTypes[61]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -3890,7 +4001,7 @@ func (x *Lock) String() string {
 func (*Lock) ProtoMessage() {}
 
 func (x *Lock) ProtoReflect() protoreflect.Message {
-	mi := &file_filer_proto_msgTypes[59]
+	mi := &file_filer_proto_msgTypes[61]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -3903,7 +4014,7 @@ func (x *Lock) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Lock.ProtoReflect.Descriptor instead.
 func (*Lock) Descriptor() ([]byte, []int) {
-	return file_filer_proto_rawDescGZIP(), []int{59}
+	return file_filer_proto_rawDescGZIP(), []int{61}
 }
 
 func (x *Lock) GetName() string {
@@ -3927,6 +4038,13 @@ func (x *Lock) GetExpiredAtNs() int64 {
 	return 0
 }
 
+func (x *Lock) GetOwner() string {
+	if x != nil {
+		return x.Owner
+	}
+	return ""
+}
+
 type TransferLocksRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -3938,7 +4056,7 @@ type TransferLocksRequest struct {
 func (x *TransferLocksRequest) Reset() {
 	*x = TransferLocksRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_filer_proto_msgTypes[60]
+		mi := &file_filer_proto_msgTypes[62]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -3951,7 +4069,7 @@ func (x *TransferLocksRequest) String() string {
 func (*TransferLocksRequest) ProtoMessage() {}
 
 func (x *TransferLocksRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_filer_proto_msgTypes[60]
+	mi := &file_filer_proto_msgTypes[62]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -3964,7 +4082,7 @@ func (x *TransferLocksRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use TransferLocksRequest.ProtoReflect.Descriptor instead.
 func (*TransferLocksRequest) Descriptor() ([]byte, []int) {
-	return file_filer_proto_rawDescGZIP(), []int{60}
+	return file_filer_proto_rawDescGZIP(), []int{62}
 }
 
 func (x *TransferLocksRequest) GetLocks() []*Lock {
@@ -3983,7 +4101,7 @@ type TransferLocksResponse struct {
 func (x *TransferLocksResponse) Reset() {
 	*x = TransferLocksResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_filer_proto_msgTypes[61]
+		mi := &file_filer_proto_msgTypes[63]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -3996,7 +4114,7 @@ func (x *TransferLocksResponse) String() string {
 func (*TransferLocksResponse) ProtoMessage() {}
 
 func (x *TransferLocksResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_filer_proto_msgTypes[61]
+	mi := &file_filer_proto_msgTypes[63]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -4009,7 +4127,7 @@ func (x *TransferLocksResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use TransferLocksResponse.ProtoReflect.Descriptor instead.
 func (*TransferLocksResponse) Descriptor() ([]byte, []int) {
-	return file_filer_proto_rawDescGZIP(), []int{61}
+	return file_filer_proto_rawDescGZIP(), []int{63}
 }
 
 // if found, send the exact address
@@ -4026,7 +4144,7 @@ type LocateBrokerResponse_Resource struct {
 func (x *LocateBrokerResponse_Resource) Reset() {
 	*x = LocateBrokerResponse_Resource{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_filer_proto_msgTypes[64]
+		mi := &file_filer_proto_msgTypes[66]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -4039,7 +4157,7 @@ func (x *LocateBrokerResponse_Resource) String() string {
 func (*LocateBrokerResponse_Resource) ProtoMessage() {}
 
 func (x *LocateBrokerResponse_Resource) ProtoReflect() protoreflect.Message {
-	mi := &file_filer_proto_msgTypes[64]
+	mi := &file_filer_proto_msgTypes[66]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -4090,7 +4208,7 @@ type FilerConf_PathConf struct {
 func (x *FilerConf_PathConf) Reset() {
 	*x = FilerConf_PathConf{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_filer_proto_msgTypes[65]
+		mi := &file_filer_proto_msgTypes[67]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -4103,7 +4221,7 @@ func (x *FilerConf_PathConf) String() string {
 func (*FilerConf_PathConf) ProtoMessage() {}
 
 func (x *FilerConf_PathConf) ProtoReflect() protoreflect.Message {
-	mi := &file_filer_proto_msgTypes[65]
+	mi := &file_filer_proto_msgTypes[67]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -4687,7 +4805,7 @@ var file_filer_proto_rawDesc = []byte{
 	0x54, 0x6f, 0x4c, 0x6f, 0x63, 0x61, 0x6c, 0x43, 0x6c, 0x75, 0x73, 0x74, 0x65, 0x72, 0x52, 0x65,
 	0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x25, 0x0a, 0x05, 0x65, 0x6e, 0x74, 0x72, 0x79, 0x18,
 	0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x0f, 0x2e, 0x66, 0x69, 0x6c, 0x65, 0x72, 0x5f, 0x70, 0x62,
-	0x2e, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x52, 0x05, 0x65, 0x6e, 0x74, 0x72, 0x79, 0x22, 0x85, 0x01,
+	0x2e, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x52, 0x05, 0x65, 0x6e, 0x74, 0x72, 0x79, 0x22, 0x9b, 0x01,
 	0x0a, 0x0b, 0x4c, 0x6f, 0x63, 0x6b, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x12, 0x0a,
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@@ -4696,163 +4814,179 @@ var file_filer_proto_rawDesc = []byte{
 	0x65, 0x77, 0x5f, 0x74, 0x6f, 0x6b, 0x65, 0x6e, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0a,
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 }
 
 var (
@@ -4867,7 +5001,7 @@ func file_filer_proto_rawDescGZIP() []byte {
 	return file_filer_proto_rawDescData
 }
 
-var file_filer_proto_msgTypes = make([]protoimpl.MessageInfo, 66)
+var file_filer_proto_msgTypes = make([]protoimpl.MessageInfo, 68)
 var file_filer_proto_goTypes = []interface{}{
 	(*LookupDirectoryEntryRequest)(nil),             // 0: filer_pb.LookupDirectoryEntryRequest
 	(*LookupDirectoryEntryResponse)(nil),            // 1: filer_pb.LookupDirectoryEntryResponse
@@ -4928,20 +5062,22 @@ var file_filer_proto_goTypes = []interface{}{
 	(*LockResponse)(nil),                            // 56: filer_pb.LockResponse
 	(*UnlockRequest)(nil),                           // 57: filer_pb.UnlockRequest
 	(*UnlockResponse)(nil),                          // 58: filer_pb.UnlockResponse
-	(*Lock)(nil),                                    // 59: filer_pb.Lock
-	(*TransferLocksRequest)(nil),                    // 60: filer_pb.TransferLocksRequest
-	(*TransferLocksResponse)(nil),                   // 61: filer_pb.TransferLocksResponse
-	nil,                                             // 62: filer_pb.Entry.ExtendedEntry
-	nil,                                             // 63: filer_pb.LookupVolumeResponse.LocationsMapEntry
-	(*LocateBrokerResponse_Resource)(nil),           // 64: filer_pb.LocateBrokerResponse.Resource
-	(*FilerConf_PathConf)(nil),                      // 65: filer_pb.FilerConf.PathConf
+	(*FindLockOwnerRequest)(nil),                    // 59: filer_pb.FindLockOwnerRequest
+	(*FindLockOwnerResponse)(nil),                   // 60: filer_pb.FindLockOwnerResponse
+	(*Lock)(nil),                                    // 61: filer_pb.Lock
+	(*TransferLocksRequest)(nil),                    // 62: filer_pb.TransferLocksRequest
+	(*TransferLocksResponse)(nil),                   // 63: filer_pb.TransferLocksResponse
+	nil,                                             // 64: filer_pb.Entry.ExtendedEntry
+	nil,                                             // 65: filer_pb.LookupVolumeResponse.LocationsMapEntry
+	(*LocateBrokerResponse_Resource)(nil),           // 66: filer_pb.LocateBrokerResponse.Resource
+	(*FilerConf_PathConf)(nil),                      // 67: filer_pb.FilerConf.PathConf
 }
 var file_filer_proto_depIdxs = []int32{
 	5,  // 0: filer_pb.LookupDirectoryEntryResponse.entry:type_name -> filer_pb.Entry
 	5,  // 1: filer_pb.ListEntriesResponse.entry:type_name -> filer_pb.Entry
 	8,  // 2: filer_pb.Entry.chunks:type_name -> filer_pb.FileChunk
 	11, // 3: filer_pb.Entry.attributes:type_name -> filer_pb.FuseAttributes
-	62, // 4: filer_pb.Entry.extended:type_name -> filer_pb.Entry.ExtendedEntry
+	64, // 4: filer_pb.Entry.extended:type_name -> filer_pb.Entry.ExtendedEntry
 	4,  // 5: filer_pb.Entry.remote_entry:type_name -> filer_pb.RemoteEntry
 	5,  // 6: filer_pb.FullEntry.entry:type_name -> filer_pb.Entry
 	5,  // 7: filer_pb.EventNotification.old_entry:type_name -> filer_pb.Entry
@@ -4955,13 +5091,13 @@ var file_filer_proto_depIdxs = []int32{
 	7,  // 15: filer_pb.StreamRenameEntryResponse.event_notification:type_name -> filer_pb.EventNotification
 	28, // 16: filer_pb.AssignVolumeResponse.location:type_name -> filer_pb.Location
 	28, // 17: filer_pb.Locations.locations:type_name -> filer_pb.Location
-	63, // 18: filer_pb.LookupVolumeResponse.locations_map:type_name -> filer_pb.LookupVolumeResponse.LocationsMapEntry
+	65, // 18: filer_pb.LookupVolumeResponse.locations_map:type_name -> filer_pb.LookupVolumeResponse.LocationsMapEntry
 	30, // 19: filer_pb.CollectionListResponse.collections:type_name -> filer_pb.Collection
 	7,  // 20: filer_pb.SubscribeMetadataResponse.event_notification:type_name -> filer_pb.EventNotification
-	64, // 21: filer_pb.LocateBrokerResponse.resources:type_name -> filer_pb.LocateBrokerResponse.Resource
-	65, // 22: filer_pb.FilerConf.locations:type_name -> filer_pb.FilerConf.PathConf
+	66, // 21: filer_pb.LocateBrokerResponse.resources:type_name -> filer_pb.LocateBrokerResponse.Resource
+	67, // 22: filer_pb.FilerConf.locations:type_name -> filer_pb.FilerConf.PathConf
 	5,  // 23: filer_pb.CacheRemoteObjectToLocalClusterResponse.entry:type_name -> filer_pb.Entry
-	59, // 24: filer_pb.TransferLocksRequest.locks:type_name -> filer_pb.Lock
+	61, // 24: filer_pb.TransferLocksRequest.locks:type_name -> filer_pb.Lock
 	27, // 25: filer_pb.LookupVolumeResponse.LocationsMapEntry.value:type_name -> filer_pb.Locations
 	0,  // 26: filer_pb.SeaweedFiler.LookupDirectoryEntry:input_type -> filer_pb.LookupDirectoryEntryRequest
 	2,  // 27: filer_pb.SeaweedFiler.ListEntries:input_type -> filer_pb.ListEntriesRequest
@@ -4983,34 +5119,36 @@ var file_filer_proto_depIdxs = []int32{
 	48, // 43: filer_pb.SeaweedFiler.KvGet:input_type -> filer_pb.KvGetRequest
 	50, // 44: filer_pb.SeaweedFiler.KvPut:input_type -> filer_pb.KvPutRequest
 	53, // 45: filer_pb.SeaweedFiler.CacheRemoteObjectToLocalCluster:input_type -> filer_pb.CacheRemoteObjectToLocalClusterRequest
-	55, // 46: filer_pb.SeaweedFiler.Lock:input_type -> filer_pb.LockRequest
-	57, // 47: filer_pb.SeaweedFiler.Unlock:input_type -> filer_pb.UnlockRequest
-	60, // 48: filer_pb.SeaweedFiler.TransferLocks:input_type -> filer_pb.TransferLocksRequest
-	1,  // 49: filer_pb.SeaweedFiler.LookupDirectoryEntry:output_type -> filer_pb.LookupDirectoryEntryResponse
-	3,  // 50: filer_pb.SeaweedFiler.ListEntries:output_type -> filer_pb.ListEntriesResponse
-	13, // 51: filer_pb.SeaweedFiler.CreateEntry:output_type -> filer_pb.CreateEntryResponse
-	15, // 52: filer_pb.SeaweedFiler.UpdateEntry:output_type -> filer_pb.UpdateEntryResponse
-	17, // 53: filer_pb.SeaweedFiler.AppendToEntry:output_type -> filer_pb.AppendToEntryResponse
-	19, // 54: filer_pb.SeaweedFiler.DeleteEntry:output_type -> filer_pb.DeleteEntryResponse
-	21, // 55: filer_pb.SeaweedFiler.AtomicRenameEntry:output_type -> filer_pb.AtomicRenameEntryResponse
-	23, // 56: filer_pb.SeaweedFiler.StreamRenameEntry:output_type -> filer_pb.StreamRenameEntryResponse
-	25, // 57: filer_pb.SeaweedFiler.AssignVolume:output_type -> filer_pb.AssignVolumeResponse
-	29, // 58: filer_pb.SeaweedFiler.LookupVolume:output_type -> filer_pb.LookupVolumeResponse
-	32, // 59: filer_pb.SeaweedFiler.CollectionList:output_type -> filer_pb.CollectionListResponse
-	34, // 60: filer_pb.SeaweedFiler.DeleteCollection:output_type -> filer_pb.DeleteCollectionResponse
-	36, // 61: filer_pb.SeaweedFiler.Statistics:output_type -> filer_pb.StatisticsResponse
-	38, // 62: filer_pb.SeaweedFiler.Ping:output_type -> filer_pb.PingResponse
-	40, // 63: filer_pb.SeaweedFiler.GetFilerConfiguration:output_type -> filer_pb.GetFilerConfigurationResponse
-	42, // 64: filer_pb.SeaweedFiler.SubscribeMetadata:output_type -> filer_pb.SubscribeMetadataResponse
-	42, // 65: filer_pb.SeaweedFiler.SubscribeLocalMetadata:output_type -> filer_pb.SubscribeMetadataResponse
-	49, // 66: filer_pb.SeaweedFiler.KvGet:output_type -> filer_pb.KvGetResponse
-	51, // 67: filer_pb.SeaweedFiler.KvPut:output_type -> filer_pb.KvPutResponse
-	54, // 68: filer_pb.SeaweedFiler.CacheRemoteObjectToLocalCluster:output_type -> filer_pb.CacheRemoteObjectToLocalClusterResponse
-	56, // 69: filer_pb.SeaweedFiler.Lock:output_type -> filer_pb.LockResponse
-	58, // 70: filer_pb.SeaweedFiler.Unlock:output_type -> filer_pb.UnlockResponse
-	61, // 71: filer_pb.SeaweedFiler.TransferLocks:output_type -> filer_pb.TransferLocksResponse
-	49, // [49:72] is the sub-list for method output_type
-	26, // [26:49] is the sub-list for method input_type
+	55, // 46: filer_pb.SeaweedFiler.DistributedLock:input_type -> filer_pb.LockRequest
+	57, // 47: filer_pb.SeaweedFiler.DistributedUnlock:input_type -> filer_pb.UnlockRequest
+	59, // 48: filer_pb.SeaweedFiler.FindLockOwner:input_type -> filer_pb.FindLockOwnerRequest
+	62, // 49: filer_pb.SeaweedFiler.TransferLocks:input_type -> filer_pb.TransferLocksRequest
+	1,  // 50: filer_pb.SeaweedFiler.LookupDirectoryEntry:output_type -> filer_pb.LookupDirectoryEntryResponse
+	3,  // 51: filer_pb.SeaweedFiler.ListEntries:output_type -> filer_pb.ListEntriesResponse
+	13, // 52: filer_pb.SeaweedFiler.CreateEntry:output_type -> filer_pb.CreateEntryResponse
+	15, // 53: filer_pb.SeaweedFiler.UpdateEntry:output_type -> filer_pb.UpdateEntryResponse
+	17, // 54: filer_pb.SeaweedFiler.AppendToEntry:output_type -> filer_pb.AppendToEntryResponse
+	19, // 55: filer_pb.SeaweedFiler.DeleteEntry:output_type -> filer_pb.DeleteEntryResponse
+	21, // 56: filer_pb.SeaweedFiler.AtomicRenameEntry:output_type -> filer_pb.AtomicRenameEntryResponse
+	23, // 57: filer_pb.SeaweedFiler.StreamRenameEntry:output_type -> filer_pb.StreamRenameEntryResponse
+	25, // 58: filer_pb.SeaweedFiler.AssignVolume:output_type -> filer_pb.AssignVolumeResponse
+	29, // 59: filer_pb.SeaweedFiler.LookupVolume:output_type -> filer_pb.LookupVolumeResponse
+	32, // 60: filer_pb.SeaweedFiler.CollectionList:output_type -> filer_pb.CollectionListResponse
+	34, // 61: filer_pb.SeaweedFiler.DeleteCollection:output_type -> filer_pb.DeleteCollectionResponse
+	36, // 62: filer_pb.SeaweedFiler.Statistics:output_type -> filer_pb.StatisticsResponse
+	38, // 63: filer_pb.SeaweedFiler.Ping:output_type -> filer_pb.PingResponse
+	40, // 64: filer_pb.SeaweedFiler.GetFilerConfiguration:output_type -> filer_pb.GetFilerConfigurationResponse
+	42, // 65: filer_pb.SeaweedFiler.SubscribeMetadata:output_type -> filer_pb.SubscribeMetadataResponse
+	42, // 66: filer_pb.SeaweedFiler.SubscribeLocalMetadata:output_type -> filer_pb.SubscribeMetadataResponse
+	49, // 67: filer_pb.SeaweedFiler.KvGet:output_type -> filer_pb.KvGetResponse
+	51, // 68: filer_pb.SeaweedFiler.KvPut:output_type -> filer_pb.KvPutResponse
+	54, // 69: filer_pb.SeaweedFiler.CacheRemoteObjectToLocalCluster:output_type -> filer_pb.CacheRemoteObjectToLocalClusterResponse
+	56, // 70: filer_pb.SeaweedFiler.DistributedLock:output_type -> filer_pb.LockResponse
+	58, // 71: filer_pb.SeaweedFiler.DistributedUnlock:output_type -> filer_pb.UnlockResponse
+	60, // 72: filer_pb.SeaweedFiler.FindLockOwner:output_type -> filer_pb.FindLockOwnerResponse
+	63, // 73: filer_pb.SeaweedFiler.TransferLocks:output_type -> filer_pb.TransferLocksResponse
+	50, // [50:74] is the sub-list for method output_type
+	26, // [26:50] is the sub-list for method input_type
 	26, // [26:26] is the sub-list for extension type_name
 	26, // [26:26] is the sub-list for extension extendee
 	0,  // [0:26] is the sub-list for field type_name
@@ -5731,7 +5869,7 @@ func file_filer_proto_init() {
 			}
 		}
 		file_filer_proto_msgTypes[59].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Lock); i {
+			switch v := v.(*FindLockOwnerRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -5743,7 +5881,7 @@ func file_filer_proto_init() {
 			}
 		}
 		file_filer_proto_msgTypes[60].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*TransferLocksRequest); i {
+			switch v := v.(*FindLockOwnerResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -5755,6 +5893,30 @@ func file_filer_proto_init() {
 			}
 		}
 		file_filer_proto_msgTypes[61].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Lock); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[62].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*TransferLocksRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[63].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*TransferLocksResponse); i {
 			case 0:
 				return &v.state
@@ -5766,7 +5928,7 @@ func file_filer_proto_init() {
 				return nil
 			}
 		}
-		file_filer_proto_msgTypes[64].Exporter = func(v interface{}, i int) interface{} {
+		file_filer_proto_msgTypes[66].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*LocateBrokerResponse_Resource); i {
 			case 0:
 				return &v.state
@@ -5778,7 +5940,7 @@ func file_filer_proto_init() {
 				return nil
 			}
 		}
-		file_filer_proto_msgTypes[65].Exporter = func(v interface{}, i int) interface{} {
+		file_filer_proto_msgTypes[67].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*FilerConf_PathConf); i {
 			case 0:
 				return &v.state
@@ -5797,7 +5959,7 @@ func file_filer_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_filer_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   66,
+			NumMessages:   68,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/weed/pb/filer_pb/filer_grpc.pb.go b/weed/pb/filer_pb/filer_grpc.pb.go
index 154750835..ab3b31cfb 100644
--- a/weed/pb/filer_pb/filer_grpc.pb.go
+++ b/weed/pb/filer_pb/filer_grpc.pb.go
@@ -42,8 +42,10 @@ type SeaweedFilerClient interface {
 	KvGet(ctx context.Context, in *KvGetRequest, opts ...grpc.CallOption) (*KvGetResponse, error)
 	KvPut(ctx context.Context, in *KvPutRequest, opts ...grpc.CallOption) (*KvPutResponse, error)
 	CacheRemoteObjectToLocalCluster(ctx context.Context, in *CacheRemoteObjectToLocalClusterRequest, opts ...grpc.CallOption) (*CacheRemoteObjectToLocalClusterResponse, error)
-	Lock(ctx context.Context, in *LockRequest, opts ...grpc.CallOption) (*LockResponse, error)
-	Unlock(ctx context.Context, in *UnlockRequest, opts ...grpc.CallOption) (*UnlockResponse, error)
+	DistributedLock(ctx context.Context, in *LockRequest, opts ...grpc.CallOption) (*LockResponse, error)
+	DistributedUnlock(ctx context.Context, in *UnlockRequest, opts ...grpc.CallOption) (*UnlockResponse, error)
+	FindLockOwner(ctx context.Context, in *FindLockOwnerRequest, opts ...grpc.CallOption) (*FindLockOwnerResponse, error)
+	// distributed lock management internal use only
 	TransferLocks(ctx context.Context, in *TransferLocksRequest, opts ...grpc.CallOption) (*TransferLocksResponse, error)
 }
 
@@ -327,18 +329,27 @@ func (c *seaweedFilerClient) CacheRemoteObjectToLocalCluster(ctx context.Context
 	return out, nil
 }
 
-func (c *seaweedFilerClient) Lock(ctx context.Context, in *LockRequest, opts ...grpc.CallOption) (*LockResponse, error) {
+func (c *seaweedFilerClient) DistributedLock(ctx context.Context, in *LockRequest, opts ...grpc.CallOption) (*LockResponse, error) {
 	out := new(LockResponse)
-	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/Lock", in, out, opts...)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/DistributedLock", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return out, nil
 }
 
-func (c *seaweedFilerClient) Unlock(ctx context.Context, in *UnlockRequest, opts ...grpc.CallOption) (*UnlockResponse, error) {
+func (c *seaweedFilerClient) DistributedUnlock(ctx context.Context, in *UnlockRequest, opts ...grpc.CallOption) (*UnlockResponse, error) {
 	out := new(UnlockResponse)
-	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/Unlock", in, out, opts...)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/DistributedUnlock", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedFilerClient) FindLockOwner(ctx context.Context, in *FindLockOwnerRequest, opts ...grpc.CallOption) (*FindLockOwnerResponse, error) {
+	out := new(FindLockOwnerResponse)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/FindLockOwner", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -378,8 +389,10 @@ type SeaweedFilerServer interface {
 	KvGet(context.Context, *KvGetRequest) (*KvGetResponse, error)
 	KvPut(context.Context, *KvPutRequest) (*KvPutResponse, error)
 	CacheRemoteObjectToLocalCluster(context.Context, *CacheRemoteObjectToLocalClusterRequest) (*CacheRemoteObjectToLocalClusterResponse, error)
-	Lock(context.Context, *LockRequest) (*LockResponse, error)
-	Unlock(context.Context, *UnlockRequest) (*UnlockResponse, error)
+	DistributedLock(context.Context, *LockRequest) (*LockResponse, error)
+	DistributedUnlock(context.Context, *UnlockRequest) (*UnlockResponse, error)
+	FindLockOwner(context.Context, *FindLockOwnerRequest) (*FindLockOwnerResponse, error)
+	// distributed lock management internal use only
 	TransferLocks(context.Context, *TransferLocksRequest) (*TransferLocksResponse, error)
 	mustEmbedUnimplementedSeaweedFilerServer()
 }
@@ -448,11 +461,14 @@ func (UnimplementedSeaweedFilerServer) KvPut(context.Context, *KvPutRequest) (*K
 func (UnimplementedSeaweedFilerServer) CacheRemoteObjectToLocalCluster(context.Context, *CacheRemoteObjectToLocalClusterRequest) (*CacheRemoteObjectToLocalClusterResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method CacheRemoteObjectToLocalCluster not implemented")
 }
-func (UnimplementedSeaweedFilerServer) Lock(context.Context, *LockRequest) (*LockResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method Lock not implemented")
+func (UnimplementedSeaweedFilerServer) DistributedLock(context.Context, *LockRequest) (*LockResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method DistributedLock not implemented")
 }
-func (UnimplementedSeaweedFilerServer) Unlock(context.Context, *UnlockRequest) (*UnlockResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method Unlock not implemented")
+func (UnimplementedSeaweedFilerServer) DistributedUnlock(context.Context, *UnlockRequest) (*UnlockResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method DistributedUnlock not implemented")
+}
+func (UnimplementedSeaweedFilerServer) FindLockOwner(context.Context, *FindLockOwnerRequest) (*FindLockOwnerResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method FindLockOwner not implemented")
 }
 func (UnimplementedSeaweedFilerServer) TransferLocks(context.Context, *TransferLocksRequest) (*TransferLocksResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method TransferLocks not implemented")
@@ -842,38 +858,56 @@ func _SeaweedFiler_CacheRemoteObjectToLocalCluster_Handler(srv interface{}, ctx
 	return interceptor(ctx, in, info, handler)
 }
 
-func _SeaweedFiler_Lock_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+func _SeaweedFiler_DistributedLock_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(LockRequest)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
 	if interceptor == nil {
-		return srv.(SeaweedFilerServer).Lock(ctx, in)
+		return srv.(SeaweedFilerServer).DistributedLock(ctx, in)
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/filer_pb.SeaweedFiler/Lock",
+		FullMethod: "/filer_pb.SeaweedFiler/DistributedLock",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(SeaweedFilerServer).Lock(ctx, req.(*LockRequest))
+		return srv.(SeaweedFilerServer).DistributedLock(ctx, req.(*LockRequest))
 	}
 	return interceptor(ctx, in, info, handler)
 }
 
-func _SeaweedFiler_Unlock_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+func _SeaweedFiler_DistributedUnlock_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(UnlockRequest)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
 	if interceptor == nil {
-		return srv.(SeaweedFilerServer).Unlock(ctx, in)
+		return srv.(SeaweedFilerServer).DistributedUnlock(ctx, in)
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/filer_pb.SeaweedFiler/Unlock",
+		FullMethod: "/filer_pb.SeaweedFiler/DistributedUnlock",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(SeaweedFilerServer).Unlock(ctx, req.(*UnlockRequest))
+		return srv.(SeaweedFilerServer).DistributedUnlock(ctx, req.(*UnlockRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _SeaweedFiler_FindLockOwner_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(FindLockOwnerRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedFilerServer).FindLockOwner(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/filer_pb.SeaweedFiler/FindLockOwner",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedFilerServer).FindLockOwner(ctx, req.(*FindLockOwnerRequest))
 	}
 	return interceptor(ctx, in, info, handler)
 }
@@ -968,12 +1002,16 @@ var SeaweedFiler_ServiceDesc = grpc.ServiceDesc{
 			Handler:    _SeaweedFiler_CacheRemoteObjectToLocalCluster_Handler,
 		},
 		{
-			MethodName: "Lock",
-			Handler:    _SeaweedFiler_Lock_Handler,
+			MethodName: "DistributedLock",
+			Handler:    _SeaweedFiler_DistributedLock_Handler,
 		},
 		{
-			MethodName: "Unlock",
-			Handler:    _SeaweedFiler_Unlock_Handler,
+			MethodName: "DistributedUnlock",
+			Handler:    _SeaweedFiler_DistributedUnlock_Handler,
+		},
+		{
+			MethodName: "FindLockOwner",
+			Handler:    _SeaweedFiler_FindLockOwner_Handler,
 		},
 		{
 			MethodName: "TransferLocks",
diff --git a/weed/pb/mq.proto b/weed/pb/mq.proto
index ceb425e90..7f3e72e46 100644
--- a/weed/pb/mq.proto
+++ b/weed/pb/mq.proto
@@ -106,9 +106,8 @@ message CheckBrokerLoadResponse {
 //////////////////////////////////////////////////
 message BrokerStats {
     int32 topic_partition_count = 1;
-    int64 message_count = 2;
-    int64 bytes_count = 3;
-    int32 cpu_usage_percent = 4;
+    int32 consumer_count = 2;
+    int32 cpu_usage_percent = 3;
 }
 message ConnectToBalancerRequest {
     message InitMessage {
@@ -120,7 +119,6 @@ message ConnectToBalancerRequest {
     }
 }
 message ConnectToBalancerResponse {
-    string error = 1;
 }
 //////////////////////////////////////////////////
 message LookupTopicBrokersRequest {
diff --git a/weed/pb/mq_pb/mq.pb.go b/weed/pb/mq_pb/mq.pb.go
index b18bcc408..a9174e19c 100644
--- a/weed/pb/mq_pb/mq.pb.go
+++ b/weed/pb/mq_pb/mq.pb.go
@@ -679,9 +679,8 @@ type BrokerStats struct {
 	unknownFields protoimpl.UnknownFields
 
 	TopicPartitionCount int32 `protobuf:"varint,1,opt,name=topic_partition_count,json=topicPartitionCount,proto3" json:"topic_partition_count,omitempty"`
-	MessageCount        int64 `protobuf:"varint,2,opt,name=message_count,json=messageCount,proto3" json:"message_count,omitempty"`
-	BytesCount          int64 `protobuf:"varint,3,opt,name=bytes_count,json=bytesCount,proto3" json:"bytes_count,omitempty"`
-	CpuUsagePercent     int32 `protobuf:"varint,4,opt,name=cpu_usage_percent,json=cpuUsagePercent,proto3" json:"cpu_usage_percent,omitempty"`
+	ConsumerCount       int32 `protobuf:"varint,2,opt,name=consumer_count,json=consumerCount,proto3" json:"consumer_count,omitempty"`
+	CpuUsagePercent     int32 `protobuf:"varint,3,opt,name=cpu_usage_percent,json=cpuUsagePercent,proto3" json:"cpu_usage_percent,omitempty"`
 }
 
 func (x *BrokerStats) Reset() {
@@ -723,16 +722,9 @@ func (x *BrokerStats) GetTopicPartitionCount() int32 {
 	return 0
 }
 
-func (x *BrokerStats) GetMessageCount() int64 {
+func (x *BrokerStats) GetConsumerCount() int32 {
 	if x != nil {
-		return x.MessageCount
-	}
-	return 0
-}
-
-func (x *BrokerStats) GetBytesCount() int64 {
-	if x != nil {
-		return x.BytesCount
+		return x.ConsumerCount
 	}
 	return 0
 }
@@ -829,8 +821,6 @@ type ConnectToBalancerResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
-
-	Error string `protobuf:"bytes,1,opt,name=error,proto3" json:"error,omitempty"`
 }
 
 func (x *ConnectToBalancerResponse) Reset() {
@@ -865,13 +855,6 @@ func (*ConnectToBalancerResponse) Descriptor() ([]byte, []int) {
 	return file_mq_proto_rawDescGZIP(), []int{14}
 }
 
-func (x *ConnectToBalancerResponse) GetError() string {
-	if x != nil {
-		return x.Error
-	}
-	return ""
-}
-
 // ////////////////////////////////////////////////
 type LookupTopicBrokersRequest struct {
 	state         protoimpl.MessageState
@@ -2113,275 +2096,272 @@ var file_mq_proto_rawDesc = []byte{
 	0x67, 0x65, 0x5f, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x18, 0x01, 0x20, 0x01, 0x28, 0x03, 0x52, 0x0c,
 	0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x12, 0x1f, 0x0a, 0x0b,
 	0x62, 0x79, 0x74, 0x65, 0x73, 0x5f, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x18, 0x02, 0x20, 0x01, 0x28,
-	0x03, 0x52, 0x0a, 0x62, 0x79, 0x74, 0x65, 0x73, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x22, 0xb3, 0x01,
+	0x03, 0x52, 0x0a, 0x62, 0x79, 0x74, 0x65, 0x73, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x22, 0x94, 0x01,
 	0x0a, 0x0b, 0x42, 0x72, 0x6f, 0x6b, 0x65, 0x72, 0x53, 0x74, 0x61, 0x74, 0x73, 0x12, 0x32, 0x0a,
 	0x15, 0x74, 0x6f, 0x70, 0x69, 0x63, 0x5f, 0x70, 0x61, 0x72, 0x74, 0x69, 0x74, 0x69, 0x6f, 0x6e,
 	0x5f, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x18, 0x01, 0x20, 0x01, 0x28, 0x05, 0x52, 0x13, 0x74, 0x6f,
 	0x70, 0x69, 0x63, 0x50, 0x61, 0x72, 0x74, 0x69, 0x74, 0x69, 0x6f, 0x6e, 0x43, 0x6f, 0x75, 0x6e,
-	0x74, 0x12, 0x23, 0x0a, 0x0d, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x5f, 0x63, 0x6f, 0x75,
-	0x6e, 0x74, 0x18, 0x02, 0x20, 0x01, 0x28, 0x03, 0x52, 0x0c, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67,
-	0x65, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x12, 0x1f, 0x0a, 0x0b, 0x62, 0x79, 0x74, 0x65, 0x73, 0x5f,
-	0x63, 0x6f, 0x75, 0x6e, 0x74, 0x18, 0x03, 0x20, 0x01, 0x28, 0x03, 0x52, 0x0a, 0x62, 0x79, 0x74,
-	0x65, 0x73, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x12, 0x2a, 0x0a, 0x11, 0x63, 0x70, 0x75, 0x5f, 0x75,
-	0x73, 0x61, 0x67, 0x65, 0x5f, 0x70, 0x65, 0x72, 0x63, 0x65, 0x6e, 0x74, 0x18, 0x04, 0x20, 0x01,
-	0x28, 0x05, 0x52, 0x0f, 0x63, 0x70, 0x75, 0x55, 0x73, 0x61, 0x67, 0x65, 0x50, 0x65, 0x72, 0x63,
-	0x65, 0x6e, 0x74, 0x22, 0xc9, 0x01, 0x0a, 0x18, 0x43, 0x6f, 0x6e, 0x6e, 0x65, 0x63, 0x74, 0x54,
-	0x6f, 0x42, 0x61, 0x6c, 0x61, 0x6e, 0x63, 0x65, 0x72, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74,
-	0x12, 0x48, 0x0a, 0x04, 0x69, 0x6e, 0x69, 0x74, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x32,
-	0x2e, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x69, 0x6e, 0x67, 0x5f, 0x70, 0x62, 0x2e, 0x43, 0x6f,
-	0x6e, 0x6e, 0x65, 0x63, 0x74, 0x54, 0x6f, 0x42, 0x61, 0x6c, 0x61, 0x6e, 0x63, 0x65, 0x72, 0x52,
-	0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x2e, 0x49, 0x6e, 0x69, 0x74, 0x4d, 0x65, 0x73, 0x73, 0x61,
-	0x67, 0x65, 0x48, 0x00, 0x52, 0x04, 0x69, 0x6e, 0x69, 0x74, 0x12, 0x31, 0x0a, 0x05, 0x73, 0x74,
-	0x61, 0x74, 0x73, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x19, 0x2e, 0x6d, 0x65, 0x73, 0x73,
-	0x61, 0x67, 0x69, 0x6e, 0x67, 0x5f, 0x70, 0x62, 0x2e, 0x42, 0x72, 0x6f, 0x6b, 0x65, 0x72, 0x53,
-	0x74, 0x61, 0x74, 0x73, 0x48, 0x00, 0x52, 0x05, 0x73, 0x74, 0x61, 0x74, 0x73, 0x1a, 0x25, 0x0a,
-	0x0b, 0x49, 0x6e, 0x69, 0x74, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x12, 0x16, 0x0a, 0x06,
-	0x62, 0x72, 0x6f, 0x6b, 0x65, 0x72, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x62, 0x72,
-	0x6f, 0x6b, 0x65, 0x72, 0x42, 0x09, 0x0a, 0x07, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x22,
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-	0x73, 0x65, 0x22, 0x00, 0x12, 0x81, 0x01, 0x0a, 0x1a, 0x43, 0x68, 0x65, 0x63, 0x6b, 0x54, 0x6f,
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-	0x69, 0x62, 0x65, 0x12, 0x1e, 0x2e, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x69, 0x6e, 0x67, 0x5f,
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+	0x65, 0x22, 0x00, 0x12, 0x4c, 0x0a, 0x07, 0x50, 0x75, 0x62, 0x6c, 0x69, 0x73, 0x68, 0x12, 0x1c,
+	0x2e, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x69, 0x6e, 0x67, 0x5f, 0x70, 0x62, 0x2e, 0x50, 0x75,
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+	0x2e, 0x6d, 0x71, 0x42, 0x10, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x51, 0x75, 0x65, 0x75, 0x65,
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+	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 (
diff --git a/weed/server/filer_grpc_server.go b/weed/server/filer_grpc_server.go
index 7607af664..fb41fa268 100644
--- a/weed/server/filer_grpc_server.go
+++ b/weed/server/filer_grpc_server.go
@@ -244,9 +244,9 @@ func (fs *FilerServer) AppendToEntry(ctx context.Context, req *filer_pb.AppendTo
 	glog.V(4).Infof("AppendToEntry %v", req)
 	fullpath := util.NewFullPath(req.Directory, req.EntryName)
 
-	lockClient := cluster.NewLockClient(fs.grpcDialOption)
-	lock := lockClient.NewLock(fs.option.Host, string(fullpath))
-	defer lock.Unlock()
+	lockClient := cluster.NewLockClient(fs.grpcDialOption, fs.option.Host)
+	lock := lockClient.NewLock(string(fullpath), string(fs.option.Host))
+	defer lock.StopLock()
 
 	var offset int64 = 0
 	entry, err := fs.filer.FindEntry(ctx, fullpath)
diff --git a/weed/server/filer_grpc_server_dlm.go b/weed/server/filer_grpc_server_dlm.go
index 5da8d9718..cf7014cd3 100644
--- a/weed/server/filer_grpc_server_dlm.go
+++ b/weed/server/filer_grpc_server_dlm.go
@@ -6,24 +6,28 @@ import (
 	"github.com/seaweedfs/seaweedfs/weed/glog"
 	"github.com/seaweedfs/seaweedfs/weed/pb"
 	"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
 	"time"
 )
 
-// Lock is a grpc handler to handle FilerServer's LockRequest
-func (fs *FilerServer) Lock(ctx context.Context, req *filer_pb.LockRequest) (resp *filer_pb.LockResponse, err error) {
+// DistributedLock is a grpc handler to handle FilerServer's LockRequest
+func (fs *FilerServer) DistributedLock(ctx context.Context, req *filer_pb.LockRequest) (resp *filer_pb.LockResponse, err error) {
 
 	resp = &filer_pb.LockResponse{}
 
 	var movedTo pb.ServerAddress
 	expiredAtNs := time.Now().Add(time.Duration(req.SecondsToLock) * time.Second).UnixNano()
-	resp.RenewToken, movedTo, err = fs.filer.Dlm.LockWithTimeout(req.Name, expiredAtNs, req.RenewToken)
-	if !req.IsMoved && movedTo != "" {
+	resp.RenewToken, movedTo, err = fs.filer.Dlm.LockWithTimeout(req.Name, expiredAtNs, req.RenewToken, req.Owner)
+	glog.Infof("lock %s %v %v %v, isMoved=%v %v", req.Name, req.SecondsToLock, req.RenewToken, req.Owner, req.IsMoved, movedTo)
+	if movedTo != "" && movedTo != fs.option.Host && !req.IsMoved {
 		err = pb.WithFilerClient(false, 0, movedTo, fs.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
-			secondResp, err := client.Lock(context.Background(), &filer_pb.LockRequest{
+			secondResp, err := client.DistributedLock(context.Background(), &filer_pb.LockRequest{
 				Name:          req.Name,
 				SecondsToLock: req.SecondsToLock,
 				RenewToken:    req.RenewToken,
 				IsMoved:       true,
+				Owner:         req.Owner,
 			})
 			if err == nil {
 				resp.RenewToken = secondResp.RenewToken
@@ -45,7 +49,7 @@ func (fs *FilerServer) Lock(ctx context.Context, req *filer_pb.LockRequest) (res
 }
 
 // Unlock is a grpc handler to handle FilerServer's UnlockRequest
-func (fs *FilerServer) Unlock(ctx context.Context, req *filer_pb.UnlockRequest) (resp *filer_pb.UnlockResponse, err error) {
+func (fs *FilerServer) DistributedUnlock(ctx context.Context, req *filer_pb.UnlockRequest) (resp *filer_pb.UnlockResponse, err error) {
 
 	resp = &filer_pb.UnlockResponse{}
 
@@ -54,7 +58,7 @@ func (fs *FilerServer) Unlock(ctx context.Context, req *filer_pb.UnlockRequest)
 
 	if !req.IsMoved && movedTo != "" {
 		err = pb.WithFilerClient(false, 0, movedTo, fs.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
-			secondResp, err := client.Unlock(context.Background(), &filer_pb.UnlockRequest{
+			secondResp, err := client.DistributedUnlock(context.Background(), &filer_pb.UnlockRequest{
 				Name:       req.Name,
 				RenewToken: req.RenewToken,
 				IsMoved:    true,
@@ -75,11 +79,34 @@ func (fs *FilerServer) Unlock(ctx context.Context, req *filer_pb.UnlockRequest)
 
 }
 
+func (fs *FilerServer) FindLockOwner(ctx context.Context, req *filer_pb.FindLockOwnerRequest) (*filer_pb.FindLockOwnerResponse, error) {
+	owner, movedTo, err := fs.filer.Dlm.FindLockOwner(req.Name)
+	if err != nil {
+		return nil, status.Error(codes.Internal, err.Error())
+	}
+	if !req.IsMoved && movedTo != "" {
+		err = pb.WithFilerClient(false, 0, movedTo, fs.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
+			secondResp, err := client.FindLockOwner(context.Background(), &filer_pb.FindLockOwnerRequest{
+				Name:    req.Name,
+				IsMoved: true,
+			})
+			owner = secondResp.Owner
+			return err
+		})
+		if err != nil {
+			return nil, err
+		}
+	}
+	return &filer_pb.FindLockOwnerResponse{
+		Owner: owner,
+	}, nil
+}
+
 // TransferLocks is a grpc handler to handle FilerServer's TransferLocksRequest
 func (fs *FilerServer) TransferLocks(ctx context.Context, req *filer_pb.TransferLocksRequest) (*filer_pb.TransferLocksResponse, error) {
 
 	for _, lock := range req.Locks {
-		fs.filer.Dlm.InsertLock(lock.Name, lock.ExpiredAtNs, lock.RenewToken)
+		fs.filer.Dlm.InsertLock(lock.Name, lock.ExpiredAtNs, lock.RenewToken, lock.Owner)
 	}
 
 	return &filer_pb.TransferLocksResponse{}, nil
@@ -101,6 +128,7 @@ func (fs *FilerServer) OnDlmChangeSnapshot(snapshot []pb.ServerAddress) {
 						Name:        lock.Key,
 						RenewToken:  lock.Token,
 						ExpiredAtNs: lock.ExpiredAtNs,
+						Owner:       lock.Owner,
 					},
 				},
 			})
diff --git a/weed/wdclient/masterclient.go b/weed/wdclient/masterclient.go
index a6ddf22f3..98442c1af 100644
--- a/weed/wdclient/masterclient.go
+++ b/weed/wdclient/masterclient.go
@@ -25,7 +25,7 @@ type MasterClient struct {
 	currentMaster     pb.ServerAddress
 	currentMasterLock sync.RWMutex
 	masters           pb.ServerDiscovery
-	grpcDialOption grpc.DialOption
+	grpcDialOption    grpc.DialOption
 
 	*vidMap
 	vidMapCacheSize  int
@@ -244,9 +244,9 @@ func (mc *MasterClient) tryConnectToMaster(master pb.ServerAddress) (nextHintedL
 				if mc.OnPeerUpdate != nil {
 					if update.FilerGroup == mc.FilerGroup {
 						if update.IsAdd {
-							glog.V(0).Infof("+ %s.%s %s\n", update.FilerGroup, update.NodeType, update.Address)
+							glog.V(0).Infof("+ %s@%s noticed %s.%s %s\n", mc.clientType, mc.clientHost, update.FilerGroup, update.NodeType, update.Address)
 						} else {
-							glog.V(0).Infof("- %s.%s %s\n", update.FilerGroup, update.NodeType, update.Address)
+							glog.V(0).Infof("- %s@%s noticed %s.%s %s\n", mc.clientType, mc.clientHost, update.FilerGroup, update.NodeType, update.Address)
 						}
 						stats.MasterClientConnectCounter.WithLabelValues(stats.OnPeerUpdate).Inc()
 						mc.OnPeerUpdate(update, time.Now())