diff --git a/include/util/tqueue.h b/include/util/tqueue.h
index da409a90bb96c2b19ad081c4599a9fa75de1ad4e..8b46bbd0642366d9dce26f406939b3c3112cb97e 100644
--- a/include/util/tqueue.h
+++ b/include/util/tqueue.h
@@ -59,6 +59,47 @@ typedef enum {
 typedef void (*FItem)(SQueueInfo *pInfo, void *pItem);
 typedef void (*FItems)(SQueueInfo *pInfo, STaosQall *qall, int32_t numOfItems);
 
+typedef struct STaosQnode STaosQnode;
+
+typedef struct STaosQnode {
+  STaosQnode *next;
+  STaosQueue *queue;
+  int64_t     timestamp;
+  int32_t     size;
+  int8_t      itype;
+  int8_t      reserved[3];
+  char        item[];
+} STaosQnode;
+
+typedef struct STaosQueue {
+  STaosQnode   *head;
+  STaosQnode   *tail;
+  STaosQueue   *next;     // for queue set
+  STaosQset    *qset;     // for queue set
+  void         *ahandle;  // for queue set
+  FItem         itemFp;
+  FItems        itemsFp;
+  TdThreadMutex mutex;
+  int64_t       memOfItems;
+  int32_t       numOfItems;
+  int64_t       threadId;
+} STaosQueue;
+
+typedef struct STaosQset {
+  STaosQueue   *head;
+  STaosQueue   *current;
+  TdThreadMutex mutex;
+  tsem_t        sem;
+  int32_t       numOfQueues;
+  int32_t       numOfItems;
+} STaosQset;
+
+typedef struct STaosQall {
+  STaosQnode *current;
+  STaosQnode *start;
+  int32_t     numOfItems;
+} STaosQall;
+
 STaosQueue *taosOpenQueue();
 void        taosCloseQueue(STaosQueue *queue);
 void        taosSetQueueFp(STaosQueue *queue, FItem itemFp, FItems itemsFp);
diff --git a/source/dnode/mgmt/mgmt_vnode/src/vmInt.c b/source/dnode/mgmt/mgmt_vnode/src/vmInt.c
index f36604eb27a299822bb57d578256a1b590762ba0..16cfa480b16117f8e93924ab6bc9669438934e74 100644
--- a/source/dnode/mgmt/mgmt_vnode/src/vmInt.c
+++ b/source/dnode/mgmt/mgmt_vnode/src/vmInt.c
@@ -86,22 +86,34 @@ void vmCloseVnode(SVnodeMgmt *pMgmt, SVnodeObj *pVnode) {
   taosThreadRwlockUnlock(&pMgmt->lock);
   vmReleaseVnode(pMgmt, pVnode);
 
-  dTrace("vgId:%d, wait for vnode ref become 0", pVnode->vgId);
+  dInfo("vgId:%d, wait for vnode ref become 0", pVnode->vgId);
   while (pVnode->refCount > 0) taosMsleep(10);
-  dTrace("vgId:%d, wait for vnode queue is empty", pVnode->vgId);
 
+  dInfo("vgId:%d, wait for vnode write queue:%p is empty, thread:%08" PRId64, pVnode->vgId, pVnode->pWriteQ,
+        pVnode->pWriteQ->threadId);
   while (!taosQueueEmpty(pVnode->pWriteQ)) taosMsleep(10);
+  dInfo("vgId:%d, wait for vnode sync queue:%p is empty, thread:%08" PRId64, pVnode->vgId, pVnode->pSyncQ,
+        pVnode->pWriteQ->threadId);
   while (!taosQueueEmpty(pVnode->pSyncQ)) taosMsleep(10);
+  dInfo("vgId:%d, wait for vnode sync ctrl queue:%p is empty, thread:%08" PRId64, pVnode->vgId, pVnode->pSyncCtrlQ,
+        pVnode->pWriteQ->threadId);
+  while (!taosQueueEmpty(pVnode->pSyncCtrlQ)) taosMsleep(10);
+  dInfo("vgId:%d, wait for vnode apply queue:%p is empty, thread:%08" PRId64, pVnode->vgId, pVnode->pApplyQ,
+        pVnode->pWriteQ->threadId);
   while (!taosQueueEmpty(pVnode->pApplyQ)) taosMsleep(10);
+  dInfo("vgId:%d, wait for vnode query queue:%p is empty", pVnode->vgId, pVnode->pQueryQ);
   while (!taosQueueEmpty(pVnode->pQueryQ)) taosMsleep(10);
+  dInfo("vgId:%d, wait for vnode fetch queue:%p is empty, thread:%08" PRId64, pVnode->vgId, pVnode->pFetchQ,
+        pVnode->pWriteQ->threadId);
   while (!taosQueueEmpty(pVnode->pFetchQ)) taosMsleep(10);
+  dInfo("vgId:%d, wait for vnode stream queue:%p is empty", pVnode->vgId, pVnode->pStreamQ);
   while (!taosQueueEmpty(pVnode->pStreamQ)) taosMsleep(10);
-  dTrace("vgId:%d, vnode queue is empty", pVnode->vgId);
+  dInfo("vgId:%d, all vnode queues is empty", pVnode->vgId);
 
   vmFreeQueue(pMgmt, pVnode);
   vnodeClose(pVnode->pImpl);
   pVnode->pImpl = NULL;
-  dDebug("vgId:%d, vnode is closed", pVnode->vgId);
+  dInfo("vgId:%d, vnode is closed", pVnode->vgId);
 
   if (pVnode->dropped) {
     dInfo("vgId:%d, vnode is destroyed, dropped:%d", pVnode->vgId, pVnode->dropped);
diff --git a/source/dnode/mgmt/mgmt_vnode/src/vmWorker.c b/source/dnode/mgmt/mgmt_vnode/src/vmWorker.c
index 40d0e32c2b43f2c7170e8a8a085e8214399999c2..a5070e09aa0ee2e280646237a42d5bc73c8c05da 100644
--- a/source/dnode/mgmt/mgmt_vnode/src/vmWorker.c
+++ b/source/dnode/mgmt/mgmt_vnode/src/vmWorker.c
@@ -320,12 +320,17 @@ int32_t vmAllocQueue(SVnodeMgmt *pMgmt, SVnodeObj *pVnode) {
     return -1;
   }
 
-  dDebug("vgId:%d, write-queue:%p is alloced", pVnode->vgId, pVnode->pWriteQ);
-  dDebug("vgId:%d, sync-queue:%p is alloced", pVnode->vgId, pVnode->pSyncQ);
-  dDebug("vgId:%d, apply-queue:%p is alloced", pVnode->vgId, pVnode->pApplyQ);
-  dDebug("vgId:%d, query-queue:%p is alloced", pVnode->vgId, pVnode->pQueryQ);
-  dDebug("vgId:%d, stream-queue:%p is alloced", pVnode->vgId, pVnode->pStreamQ);
-  dDebug("vgId:%d, fetch-queue:%p is alloced", pVnode->vgId, pVnode->pFetchQ);
+  dInfo("vgId:%d, write-queue:%p is alloced, thread:%08" PRId64, pVnode->vgId, pVnode->pWriteQ,
+        pVnode->pWriteQ->threadId);
+  dInfo("vgId:%d, sync-queue:%p is alloced, thread:%08" PRId64, pVnode->vgId, pVnode->pSyncQ, pVnode->pSyncQ->threadId);
+  dInfo("vgId:%d, sync-ctrl-queue:%p is alloced, thread:%08" PRId64, pVnode->vgId, pVnode->pSyncCtrlQ,
+        pVnode->pSyncCtrlQ->threadId);
+  dInfo("vgId:%d, apply-queue:%p is alloced, thread:%08" PRId64, pVnode->vgId, pVnode->pApplyQ,
+        pVnode->pApplyQ->threadId);
+  dInfo("vgId:%d, query-queue:%p is alloced", pVnode->vgId, pVnode->pQueryQ);
+  dInfo("vgId:%d, fetch-queue:%p is alloced, thread:%08" PRId64, pVnode->vgId, pVnode->pFetchQ,
+        pVnode->pFetchQ->threadId);
+  dInfo("vgId:%d, stream-queue:%p is alloced", pVnode->vgId, pVnode->pStreamQ);
   return 0;
 }
 
diff --git a/source/dnode/vnode/src/vnd/vnodeSync.c b/source/dnode/vnode/src/vnd/vnodeSync.c
index e27ae074605005881c0cf4cfbd708fd23ecae1e1..7f3b1db7c3d76be502f2c546bcde8e28fb30bcb6 100644
--- a/source/dnode/vnode/src/vnd/vnodeSync.c
+++ b/source/dnode/vnode/src/vnd/vnodeSync.c
@@ -244,16 +244,6 @@ int32_t vnodeProcessSyncMsg(SVnode *pVnode, SRpcMsg *pMsg, SRpcMsg **pRsp) {
 }
 
 static int32_t vnodeSyncEqCtrlMsg(const SMsgCb *msgcb, SRpcMsg *pMsg) {
-  if (pMsg == NULL || pMsg->pCont == NULL) {
-    return -1;
-  }
-
-  if (msgcb == NULL || msgcb->putToQueueFp == NULL) {
-    rpcFreeCont(pMsg->pCont);
-    pMsg->pCont = NULL;
-    return -1;
-  }
-
   int32_t code = tmsgPutToQueue(msgcb, SYNC_CTRL_QUEUE, pMsg);
   if (code != 0) {
     rpcFreeCont(pMsg->pCont);
@@ -263,16 +253,6 @@ static int32_t vnodeSyncEqCtrlMsg(const SMsgCb *msgcb, SRpcMsg *pMsg) {
 }
 
 static int32_t vnodeSyncEqMsg(const SMsgCb *msgcb, SRpcMsg *pMsg) {
-  if (pMsg == NULL || pMsg->pCont == NULL) {
-    return -1;
-  }
-
-  if (msgcb == NULL || msgcb->putToQueueFp == NULL) {
-    rpcFreeCont(pMsg->pCont);
-    pMsg->pCont = NULL;
-    return -1;
-  }
-
   int32_t code = tmsgPutToQueue(msgcb, SYNC_QUEUE, pMsg);
   if (code != 0) {
     rpcFreeCont(pMsg->pCont);
@@ -342,52 +322,26 @@ static void vnodeSyncRollBackMsg(const SSyncFSM *pFsm, const SRpcMsg *pMsg, cons
          TMSG_INFO(pMsg->msgType));
 }
 
-#define USE_TSDB_SNAPSHOT
-
 static int32_t vnodeSnapshotStartRead(const SSyncFSM *pFsm, void *pParam, void **ppReader) {
-#ifdef USE_TSDB_SNAPSHOT
   SVnode         *pVnode = pFsm->data;
   SSnapshotParam *pSnapshotParam = pParam;
   int32_t code = vnodeSnapReaderOpen(pVnode, pSnapshotParam->start, pSnapshotParam->end, (SVSnapReader **)ppReader);
   return code;
-#else
-  *ppReader = taosMemoryMalloc(32);
-  return 0;
-#endif
 }
 
 static int32_t vnodeSnapshotStopRead(const SSyncFSM *pFsm, void *pReader) {
-#ifdef USE_TSDB_SNAPSHOT
   SVnode *pVnode = pFsm->data;
   int32_t code = vnodeSnapReaderClose(pReader);
   return code;
-#else
-  taosMemoryFree(pReader);
-  return 0;
-#endif
 }
 
 static int32_t vnodeSnapshotDoRead(const SSyncFSM *pFsm, void *pReader, void **ppBuf, int32_t *len) {
-#ifdef USE_TSDB_SNAPSHOT
   SVnode *pVnode = pFsm->data;
   int32_t code = vnodeSnapRead(pReader, (uint8_t **)ppBuf, len);
   return code;
-#else
-  static int32_t times = 0;
-  if (times++ < 5) {
-    *len = 64;
-    *ppBuf = taosMemoryMalloc(*len);
-    snprintf(*ppBuf, *len, "snapshot block %d", times);
-  } else {
-    *len = 0;
-    *ppBuf = NULL;
-  }
-  return 0;
-#endif
 }
 
 static int32_t vnodeSnapshotStartWrite(const SSyncFSM *pFsm, void *pParam, void **ppWriter) {
-#ifdef USE_TSDB_SNAPSHOT
   SVnode         *pVnode = pFsm->data;
   SSnapshotParam *pSnapshotParam = pParam;
 
@@ -404,14 +358,9 @@ static int32_t vnodeSnapshotStartWrite(const SSyncFSM *pFsm, void *pParam, void
 
   int32_t code = vnodeSnapWriterOpen(pVnode, pSnapshotParam->start, pSnapshotParam->end, (SVSnapWriter **)ppWriter);
   return code;
-#else
-  *ppWriter = taosMemoryMalloc(32);
-  return 0;
-#endif
 }
 
 static int32_t vnodeSnapshotStopWrite(const SSyncFSM *pFsm, void *pWriter, bool isApply, SSnapshot *pSnapshot) {
-#ifdef USE_TSDB_SNAPSHOT
   SVnode *pVnode = pFsm->data;
   vInfo("vgId:%d, stop write vnode snapshot, apply:%d, index:%" PRId64 " term:%" PRIu64 " config:%" PRId64,
         pVnode->config.vgId, isApply, pSnapshot->lastApplyIndex, pSnapshot->lastApplyTerm, pSnapshot->lastConfigIndex);
@@ -419,22 +368,14 @@ static int32_t vnodeSnapshotStopWrite(const SSyncFSM *pFsm, void *pWriter, bool
   int32_t code = vnodeSnapWriterClose(pWriter, !isApply, pSnapshot);
   vInfo("vgId:%d, apply vnode snapshot finished, code:0x%x", pVnode->config.vgId, code);
   return code;
-#else
-  taosMemoryFree(pWriter);
-  return 0;
-#endif
 }
 
 static int32_t vnodeSnapshotDoWrite(const SSyncFSM *pFsm, void *pWriter, void *pBuf, int32_t len) {
-#ifdef USE_TSDB_SNAPSHOT
   SVnode *pVnode = pFsm->data;
   vDebug("vgId:%d, continue write vnode snapshot, len:%d", pVnode->config.vgId, len);
   int32_t code = vnodeSnapWrite(pWriter, pBuf, len);
   vDebug("vgId:%d, continue write vnode snapshot finished, len:%d", pVnode->config.vgId, len);
   return code;
-#else
-  return 0;
-#endif
 }
 
 static void vnodeRestoreFinish(const SSyncFSM *pFsm) {
@@ -461,7 +402,6 @@ static void vnodeBecomeFollower(const SSyncFSM *pFsm) {
   SVnode *pVnode = pFsm->data;
   vDebug("vgId:%d, become follower", pVnode->config.vgId);
 
-  // clear old leader resource
   taosThreadMutexLock(&pVnode->lock);
   if (pVnode->blocked) {
     pVnode->blocked = false;
@@ -474,15 +414,6 @@ static void vnodeBecomeFollower(const SSyncFSM *pFsm) {
 static void vnodeBecomeLeader(const SSyncFSM *pFsm) {
   SVnode *pVnode = pFsm->data;
   vDebug("vgId:%d, become leader", pVnode->config.vgId);
-
-#if 0
-  taosThreadMutexLock(&pVnode->lock);
-  if (pVnode->blocked) {
-    pVnode->blocked = false;
-    tsem_post(&pVnode->syncSem);
-  }
-  taosThreadMutexUnlock(&pVnode->lock);
-#endif
 }
 
 static SSyncFSM *vnodeSyncMakeFsm(SVnode *pVnode) {
diff --git a/source/util/src/tqueue.c b/source/util/src/tqueue.c
index 19b9b89caba70b8769de2e79a9902ec8721f7784..c8f128e6663f1a0545cb0374a174a60bd303a7a8 100644
--- a/source/util/src/tqueue.c
+++ b/source/util/src/tqueue.c
@@ -21,46 +21,6 @@
 int64_t tsRpcQueueMemoryAllowed = 0;
 int64_t tsRpcQueueMemoryUsed = 0;
 
-typedef struct STaosQnode STaosQnode;
-
-typedef struct STaosQnode {
-  STaosQnode *next;
-  STaosQueue *queue;
-  int64_t     timestamp;
-  int32_t     size;
-  int8_t      itype;
-  int8_t      reserved[3];
-  char        item[];
-} STaosQnode;
-
-typedef struct STaosQueue {
-  STaosQnode   *head;
-  STaosQnode   *tail;
-  STaosQueue   *next;     // for queue set
-  STaosQset    *qset;     // for queue set
-  void         *ahandle;  // for queue set
-  FItem         itemFp;
-  FItems        itemsFp;
-  TdThreadMutex mutex;
-  int64_t       memOfItems;
-  int32_t       numOfItems;
-} STaosQueue;
-
-typedef struct STaosQset {
-  STaosQueue   *head;
-  STaosQueue   *current;
-  TdThreadMutex mutex;
-  tsem_t        sem;
-  int32_t       numOfQueues;
-  int32_t       numOfItems;
-} STaosQset;
-
-typedef struct STaosQall {
-  STaosQnode *current;
-  STaosQnode *start;
-  int32_t     numOfItems;
-} STaosQall;
-
 STaosQueue *taosOpenQueue() {
   STaosQueue *queue = taosMemoryCalloc(1, sizeof(STaosQueue));
   if (queue == NULL) {
diff --git a/source/util/src/tworker.c b/source/util/src/tworker.c
index f7d4173d3fcb4e30c927543436acb83596bf7339..27c641555fe524e4dd3a2c87f2b6cdc60bd1ddd6 100644
--- a/source/util/src/tworker.c
+++ b/source/util/src/tworker.c
@@ -36,7 +36,7 @@ int32_t tQWorkerInit(SQWorkerPool *pool) {
     worker->pool = pool;
   }
 
-  uInfo("worker:%s is initialized, min:%d max:%d", pool->name, pool->min, pool->max);
+  uDebug("worker:%s is initialized, min:%d max:%d", pool->name, pool->min, pool->max);
   return 0;
 }
 
@@ -73,11 +73,12 @@ static void *tQWorkerThreadFp(SQWorker *worker) {
 
   taosBlockSIGPIPE();
   setThreadName(pool->name);
-  uDebug("worker:%s:%d is running", pool->name, worker->id);
+  uInfo("worker:%s:%d is running, thread:%08" PRId64, pool->name, worker->id, taosGetSelfPthreadId());
 
   while (1) {
     if (taosReadQitemFromQset(pool->qset, (void **)&msg, &qinfo) == 0) {
-      uDebug("worker:%s:%d qset:%p, got no message and exiting", pool->name, worker->id, pool->qset);
+      uInfo("worker:%s:%d qset:%p, got no message and exiting, thread:%08" PRId64, pool->name, worker->id, pool->qset,
+            taosGetSelfPthreadId());
       break;
     }
 
@@ -191,12 +192,13 @@ static void *tWWorkerThreadFp(SWWorker *worker) {
 
   taosBlockSIGPIPE();
   setThreadName(pool->name);
-  uDebug("worker:%s:%d is running", pool->name, worker->id);
+  uInfo("worker:%s:%d is running, thread:%08" PRId64, pool->name, worker->id, taosGetSelfPthreadId());
 
   while (1) {
     numOfMsgs = taosReadAllQitemsFromQset(worker->qset, worker->qall, &qinfo);
     if (numOfMsgs == 0) {
-      uDebug("worker:%s:%d qset:%p, got no message and exiting", pool->name, worker->id, worker->qset);
+      uInfo("worker:%s:%d qset:%p, got no message and exiting, thread:%08" PRId64, pool->name, worker->id, worker->qset,
+            taosGetSelfPthreadId());
       break;
     }
 
@@ -244,7 +246,8 @@ STaosQueue *tWWorkerAllocQueue(SWWorkerPool *pool, void *ahandle, FItems fp) {
     pool->nextId = (pool->nextId + 1) % pool->max;
   }
 
-  uDebug("worker:%s, queue:%p is allocated, ahandle:%p", pool->name, queue, ahandle);
+  queue->threadId = taosGetPthreadId(worker->thread);
+  uDebug("worker:%s, queue:%p is allocated, ahandle:%p thread:%08" PRId64, pool->name, queue, ahandle, queue->threadId);
   code = 0;
 
 _OVER: