diff --git a/include/common/tmsgcb.h b/include/common/tmsgcb.h
index 5ce4b16300..54a145ff33 100644
--- a/include/common/tmsgcb.h
+++ b/include/common/tmsgcb.h
@@ -25,23 +25,25 @@ extern "C" {
 typedef struct SRpcMsg      SRpcMsg;
 typedef struct SEpSet       SEpSet;
 typedef struct SMgmtWrapper SMgmtWrapper;
+typedef enum { QUERY_QUEUE, FETCH_QUEUE, WRITE_QUEUE, APPLY_QUEUE, SYNC_QUEUE, QUEUE_MAX } EQueueType;
 
 typedef int32_t (*PutToQueueFp)(SMgmtWrapper* pWrapper, SRpcMsg* pReq);
+typedef int32_t (*GetQueueSizeFp)(SMgmtWrapper* pWrapper, int32_t vgId, EQueueType qtype);
 typedef int32_t (*SendReqFp)(SMgmtWrapper* pWrapper, SEpSet* epSet, SRpcMsg* pReq);
 typedef int32_t (*SendMnodeReqFp)(SMgmtWrapper* pWrapper, SRpcMsg* pReq);
 typedef void (*SendRspFp)(SMgmtWrapper* pWrapper, SRpcMsg* pRsp);
 
-typedef enum { QUERY_QUEUE, FETCH_QUEUE, WRITE_QUEUE, APPLY_QUEUE, SYNC_QUEUE, QUEUE_MAX } EQueueType;
-
 typedef struct {
   SMgmtWrapper*  pWrapper;
   PutToQueueFp   queueFps[QUEUE_MAX];
+  GetQueueSizeFp qsizeFp;
   SendReqFp      sendReqFp;
   SendMnodeReqFp sendMnodeReqFp;
   SendRspFp      sendRspFp;
 } SMsgCb;
 
 int32_t tmsgPutToQueue(const SMsgCb* pMsgCb, EQueueType qtype, SRpcMsg* pReq);
+int32_t tmsgGetQueueSize(const SMsgCb* pMsgCb, int32_t vgId, EQueueType qtype);
 int32_t tmsgSendReq(const SMsgCb* pMsgCb, SEpSet* epSet, SRpcMsg* pReq);
 int32_t tmsgSendMnodeReq(const SMsgCb* pMsgCb, SRpcMsg* pReq);
 void    tmsgSendRsp(const SMsgCb* pMsgCb, SRpcMsg* pRsp);
diff --git a/include/util/tqueue.h b/include/util/tqueue.h
index 9faf90113e..3bccc7404b 100644
--- a/include/util/tqueue.h
+++ b/include/util/tqueue.h
@@ -42,8 +42,14 @@ shall be used to set up the protection.
 typedef struct STaosQueue STaosQueue;
 typedef struct STaosQset  STaosQset;
 typedef struct STaosQall  STaosQall;
-typedef void (*FItem)(void *ahandle, void *pItem);
-typedef void (*FItems)(void *ahandle, STaosQall *qall, int32_t numOfItems);
+typedef struct {
+  void   *ahandle;
+  int32_t workerId;
+  int32_t threadNum;
+} SQueueInfo;
+
+typedef void (*FItem)(SQueueInfo *pInfo, void *pItem);
+typedef void (*FItems)(SQueueInfo *pInfo, STaosQall *qall, int32_t numOfItems);
 
 STaosQueue *taosOpenQueue();
 void        taosCloseQueue(STaosQueue *queue);
diff --git a/include/util/tworker.h b/include/util/tworker.h
index 91f4fbf7ff..92d474c885 100644
--- a/include/util/tworker.h
+++ b/include/util/tworker.h
@@ -50,7 +50,8 @@ typedef struct SWWorker {
 } SWWorker;
 
 typedef struct SWWorkerPool {
-  int32_t       max;     // max number of workers
+  int32_t       max;  // max number of workers
+  int32_t       num;
   int32_t       nextId;  // from 0 to max-1, cyclic
   const char   *name;
   SWWorker     *workers;
@@ -73,31 +74,31 @@ typedef struct {
   int32_t     maxNum;
   FItem       fp;
   void       *param;
-} SQWorkerAllCfg;
+} SSingleWorkerCfg;
 
 typedef struct {
   const char  *name;
   STaosQueue  *queue;
   SQWorkerPool pool;
-} SQWorkerAll;
+} SSingleWorker;
 
 typedef struct {
   const char *name;
   int32_t     maxNum;
   FItems      fp;
   void       *param;
-} SWWorkerAllCfg;
+} SMultiWorkerCfg;
 
 typedef struct {
   const char  *name;
   STaosQueue  *queue;
   SWWorkerPool pool;
-} SWWorkerAll;
+} SMultiWorker;
 
-int32_t tQWorkerAllInit(SQWorkerAll *pWorker, const SQWorkerAllCfg *pCfg);
-void    tQWorkerAllCleanup(SQWorkerAll *pWorker);
-int32_t tWWorkerAllInit(SWWorkerAll *pWorker, const SWWorkerAllCfg *pCfg);
-void    tWWorkerAllCleanup(SWWorkerAll *pWorker);
+int32_t tSingleWorkerInit(SSingleWorker *pWorker, const SSingleWorkerCfg *pCfg);
+void    tSingleWorkerCleanup(SSingleWorker *pWorker);
+int32_t tMultiWorkerInit(SMultiWorker *pWorker, const SMultiWorkerCfg *pCfg);
+void    tMultiWorkerCleanup(SMultiWorker *pWorker);
 
 #ifdef __cplusplus
 }
diff --git a/source/common/src/tmsgcb.c b/source/common/src/tmsgcb.c
index b13f727db6..98ee1b679d 100644
--- a/source/common/src/tmsgcb.c
+++ b/source/common/src/tmsgcb.c
@@ -20,6 +20,10 @@ int32_t tmsgPutToQueue(const SMsgCb* pMsgCb, EQueueType qtype, SRpcMsg* pReq) {
   return (*pMsgCb->queueFps[qtype])(pMsgCb->pWrapper, pReq);
 }
 
+int32_t tmsgGetQueueSize(const SMsgCb* pMsgCb, int32_t vgId, EQueueType qtype) {
+  return (*pMsgCb->qsizeFp)(pMsgCb->pWrapper, vgId, qtype);
+}
+
 int32_t tmsgSendReq(const SMsgCb* pMsgCb, SEpSet* epSet, SRpcMsg* pReq) {
   return (*pMsgCb->sendReqFp)(pMsgCb->pWrapper, epSet, pReq);
 }
diff --git a/source/dnode/mgmt/bnode/inc/bmInt.h b/source/dnode/mgmt/bnode/inc/bmInt.h
index ddbf7f4c4e..8cfff0f1f3 100644
--- a/source/dnode/mgmt/bnode/inc/bmInt.h
+++ b/source/dnode/mgmt/bnode/inc/bmInt.h
@@ -28,7 +28,7 @@ typedef struct SBnodeMgmt {
   SDnode       *pDnode;
   SMgmtWrapper *pWrapper;
   const char   *path;
-  SDnodeWorker  writeWorker;
+  SMultiWorker  writeWorker;
 } SBnodeMgmt;
 
 // bmInt.c
diff --git a/source/dnode/mgmt/bnode/src/bmWorker.c b/source/dnode/mgmt/bnode/src/bmWorker.c
index c8ad137842..2099787c0d 100644
--- a/source/dnode/mgmt/bnode/src/bmWorker.c
+++ b/source/dnode/mgmt/bnode/src/bmWorker.c
@@ -33,7 +33,8 @@ static void bmSendErrorRsps(SMgmtWrapper *pWrapper, STaosQall *qall, int32_t num
   }
 }
 
-static void bmProcessQueue(SBnodeMgmt *pMgmt, STaosQall *qall, int32_t numOfMsgs) {
+static void bmProcessQueue(SQueueInfo *pInfo, STaosQall *qall, int32_t numOfMsgs) {
+  SBnodeMgmt   *pMgmt = pInfo->ahandle;
   SMgmtWrapper *pWrapper = pMgmt->pWrapper;
 
   SArray *pArray = taosArrayInit(numOfMsgs, sizeof(SNodeMsg *));
@@ -63,14 +64,15 @@ static void bmProcessQueue(SBnodeMgmt *pMgmt, STaosQall *qall, int32_t numOfMsgs
 }
 
 int32_t bmProcessWriteMsg(SBnodeMgmt *pMgmt, SNodeMsg *pMsg) {
-  SDnodeWorker *pWorker = &pMgmt->writeWorker;
+  SMultiWorker *pWorker = &pMgmt->writeWorker;
 
   dTrace("msg:%p, put into worker:%s", pMsg, pWorker->name);
-  return dndWriteMsgToWorker(pWorker, pMsg);
+  return taosWriteQitem(pWorker->queue, pMsg);
 }
 
 int32_t bmStartWorker(SBnodeMgmt *pMgmt) {
-  if (dndInitWorker(pMgmt, &pMgmt->writeWorker, DND_WORKER_MULTI, "bnode-write", 0, 1, bmProcessQueue) != 0) {
+  SMultiWorkerCfg cfg = {.maxNum = 1, .name = "bnode-write", .fp = (FItems)bmProcessQueue, .param = pMgmt};
+  if (tMultiWorkerInit(&pMgmt->writeWorker, &cfg) != 0) {
     dError("failed to start bnode write worker since %s", terrstr());
     return -1;
   }
@@ -78,4 +80,4 @@ int32_t bmStartWorker(SBnodeMgmt *pMgmt) {
   return 0;
 }
 
-void bmStopWorker(SBnodeMgmt *pMgmt) { dndCleanupWorker(&pMgmt->writeWorker); }
+void bmStopWorker(SBnodeMgmt *pMgmt) { tMultiWorkerCleanup(&pMgmt->writeWorker); }
diff --git a/source/dnode/mgmt/container/inc/dnd.h b/source/dnode/mgmt/container/inc/dnd.h
index f9fa896f42..af552b5357 100644
--- a/source/dnode/mgmt/container/inc/dnd.h
+++ b/source/dnode/mgmt/container/inc/dnd.h
@@ -74,20 +74,6 @@ typedef int32_t (*CreateNodeFp)(SMgmtWrapper *pWrapper, SNodeMsg *pMsg);
 typedef int32_t (*DropNodeFp)(SMgmtWrapper *pWrapper, SNodeMsg *pMsg);
 typedef int32_t (*RequireNodeFp)(SMgmtWrapper *pWrapper, bool *required);
 
-typedef struct {
-  EWorkerType type;
-  const char *name;
-  int32_t     minNum;
-  int32_t     maxNum;
-  void       *queueFp;
-  void       *param;
-  STaosQueue *queue;
-  union {
-    SQWorkerPool pool;
-    SWWorkerPool mpool;
-  };
-} SDnodeWorker;
-
 typedef struct SMsgHandle {
   int32_t       vgId;
   NodeMsgFp     vgIdMsgFp;
@@ -161,11 +147,6 @@ int32_t dndSendReqToMnode(SMgmtWrapper *pWrapper, SRpcMsg *pMsg);
 int32_t dndSendReqToDnode(SMgmtWrapper *pWrapper, SEpSet *pEpSet, SRpcMsg *pMsg);
 void    dndSendRsp(SMgmtWrapper *pWrapper, SRpcMsg *pRsp);
 
-int32_t dndInitWorker(void *param, SDnodeWorker *pWorker, EWorkerType type, const char *name, int32_t minNum,
-                      int32_t maxNum, void *queueFp);
-void    dndCleanupWorker(SDnodeWorker *pWorker);
-int32_t dndWriteMsgToWorker(SDnodeWorker *pWorker, void *pMsg);
-
 int32_t dndProcessNodeMsg(SDnode *pDnode, SNodeMsg *pMsg);
 
 int32_t dndReadFile(SMgmtWrapper *pWrapper, bool *pDeployed);
diff --git a/source/dnode/mgmt/container/src/dndWorker.c b/source/dnode/mgmt/container/src/dndWorker.c
deleted file mode 100644
index 5d99ec5f0d..0000000000
--- a/source/dnode/mgmt/container/src/dndWorker.c
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
- *
- * This program is free software: you can use, redistribute, and/or modify
- * it under the terms of the GNU Affero General Public License, version 3
- * or later ("AGPL"), as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http:www.gnu.org/licenses/>.
- */
-
-#define _DEFAULT_SOURCE
-#include "dndInt.h"
-
-int32_t dndInitWorker(void *param, SDnodeWorker *pWorker, EWorkerType type, const char *name, int32_t minNum,
-                      int32_t maxNum, void *queueFp) {
-  if (pWorker == NULL || name == NULL || minNum < 0 || maxNum <= 0 || queueFp == NULL) {
-    terrno = TSDB_CODE_INVALID_PARA;
-    return -1;
-  }
-
-  pWorker->type = type;
-  pWorker->name = name;
-  pWorker->minNum = minNum;
-  pWorker->maxNum = maxNum;
-  pWorker->queueFp = queueFp;
-  pWorker->param = param;
-
-  if (pWorker->type == DND_WORKER_SINGLE) {
-    SQWorkerPool *pPool = &pWorker->pool;
-    pPool->name = name;
-    pPool->min = minNum;
-    pPool->max = maxNum;
-    if (tQWorkerInit(pPool) != 0) {
-      terrno = TSDB_CODE_OUT_OF_MEMORY;
-      return -1;
-    }
-    pWorker->queue = tQWorkerAllocQueue(pPool, param, (FItem)queueFp);
-    if (pWorker->queue == NULL) {
-      terrno = TSDB_CODE_OUT_OF_MEMORY;
-      return -1;
-    }
-  } else if (pWorker->type == DND_WORKER_MULTI) {
-    SWWorkerPool *pPool = &pWorker->mpool;
-    pPool->name = name;
-    pPool->max = maxNum;
-    if (tWWorkerInit(pPool) != 0) {
-      terrno = TSDB_CODE_OUT_OF_MEMORY;
-      return -1;
-    }
-    pWorker->queue = tWWorkerAllocQueue(pPool, param, (FItems)queueFp);
-    if (pWorker->queue == NULL) {
-      terrno = TSDB_CODE_OUT_OF_MEMORY;
-      return -1;
-    }
-  } else {
-    terrno = TSDB_CODE_INVALID_PARA;
-  }
-
-  return 0;
-}
-
-void dndCleanupWorker(SDnodeWorker *pWorker) {
-  if (pWorker->queue == NULL) return;
-
-  while (!taosQueueEmpty(pWorker->queue)) {
-    taosMsleep(10);
-  }
-
-  if (pWorker->type == DND_WORKER_SINGLE) {
-    tQWorkerCleanup(&pWorker->pool);
-    tQWorkerFreeQueue(&pWorker->pool, pWorker->queue);
-  } else if (pWorker->type == DND_WORKER_MULTI) {
-    tWWorkerCleanup(&pWorker->mpool);
-    tWWorkerFreeQueue(&pWorker->mpool, pWorker->queue);
-  } else {
-  }
-}
-
-int32_t dndWriteMsgToWorker(SDnodeWorker *pWorker, void *pMsg) {
-  if (pWorker == NULL || pWorker->queue == NULL) {
-    terrno = TSDB_CODE_INVALID_PARA;
-    return -1;
-  }
-
-  if (taosWriteQitem(pWorker->queue, pMsg) != 0) {
-    terrno = TSDB_CODE_OUT_OF_MEMORY;
-    return -1;
-  }
-
-  return 0;
-}
diff --git a/source/dnode/mgmt/dnode/inc/dmInt.h b/source/dnode/mgmt/dnode/inc/dmInt.h
index 46e70727af..b02b1d2297 100644
--- a/source/dnode/mgmt/dnode/inc/dmInt.h
+++ b/source/dnode/mgmt/dnode/inc/dmInt.h
@@ -29,10 +29,10 @@ typedef struct SDnodeMgmt {
   SEpSet        mnodeEpSet;
   SHashObj     *dnodeHash;
   SArray       *dnodeEps;
-  TdThread    *threadId;
+  TdThread     *threadId;
   SRWLatch      latch;
-  SDnodeWorker  mgmtWorker;
-  SDnodeWorker  statusWorker;
+  SSingleWorker mgmtWorker;
+  SSingleWorker statusWorker;
   const char   *path;
   SDnode       *pDnode;
   SMgmtWrapper *pWrapper;
diff --git a/source/dnode/mgmt/dnode/src/dmWorker.c b/source/dnode/mgmt/dnode/src/dmWorker.c
index e06cbf4351..b62c18655a 100644
--- a/source/dnode/mgmt/dnode/src/dmWorker.c
+++ b/source/dnode/mgmt/dnode/src/dmWorker.c
@@ -52,10 +52,12 @@ static void *dmThreadRoutine(void *param) {
   }
 }
 
-static void dmProcessQueue(SDnodeMgmt *pMgmt, SNodeMsg *pMsg) {
-  SDnode *pDnode = pMgmt->pDnode;
+static void dmProcessQueue(SQueueInfo *pInfo, SNodeMsg *pMsg) {
+  SDnodeMgmt *pMgmt = pInfo->ahandle;
+
+  SDnode  *pDnode = pMgmt->pDnode;
   SRpcMsg *pRpc = &pMsg->rpcMsg;
-  int32_t code = -1;
+  int32_t  code = -1;
   dTrace("msg:%p, will be processed in dnode queue", pMsg);
 
   switch (pRpc->msgType) {
@@ -98,13 +100,17 @@ static void dmProcessQueue(SDnodeMgmt *pMgmt, SNodeMsg *pMsg) {
 }
 
 int32_t dmStartWorker(SDnodeMgmt *pMgmt) {
-  if (dndInitWorker(pMgmt, &pMgmt->mgmtWorker, DND_WORKER_SINGLE, "dnode-mgmt", 1, 1, dmProcessQueue) != 0) {
+  SSingleWorkerCfg mgmtCfg = {
+      .minNum = 1, .maxNum = 1, .name = "dnode-mgmt", .fp = (FItem)dmProcessQueue, .param = pMgmt};
+  if (tSingleWorkerInit(&pMgmt->mgmtWorker, &mgmtCfg) != 0) {
     dError("failed to start dnode mgmt worker since %s", terrstr());
     return -1;
   }
 
-  if (dndInitWorker(pMgmt, &pMgmt->statusWorker, DND_WORKER_SINGLE, "dnode-status", 1, 1, dmProcessQueue) != 0) {
-    dError("failed to start dnode mgmt worker since %s", terrstr());
+  SSingleWorkerCfg statusCfg = {
+      .minNum = 1, .maxNum = 1, .name = "dnode-status", .fp = (FItem)dmProcessQueue, .param = pMgmt};
+  if (tSingleWorkerInit(&pMgmt->statusWorker, &statusCfg) != 0) {
+    dError("failed to start dnode status worker since %s", terrstr());
     return -1;
   }
 
@@ -123,8 +129,8 @@ int32_t dmStartThread(SDnodeMgmt *pMgmt) {
 }
 
 void dmStopWorker(SDnodeMgmt *pMgmt) {
-  dndCleanupWorker(&pMgmt->mgmtWorker);
-  dndCleanupWorker(&pMgmt->statusWorker);
+  tSingleWorkerCleanup(&pMgmt->mgmtWorker);
+  tSingleWorkerCleanup(&pMgmt->statusWorker);
 
   if (pMgmt->threadId != NULL) {
     taosDestoryThread(pMgmt->threadId);
@@ -133,11 +139,11 @@ void dmStopWorker(SDnodeMgmt *pMgmt) {
 }
 
 int32_t dmProcessMgmtMsg(SDnodeMgmt *pMgmt, SNodeMsg *pMsg) {
-  SDnodeWorker *pWorker = &pMgmt->mgmtWorker;
+  SSingleWorker *pWorker = &pMgmt->mgmtWorker;
   if (pMsg->rpcMsg.msgType == TDMT_MND_STATUS_RSP) {
     pWorker = &pMgmt->statusWorker;
   }
 
   dTrace("msg:%p, will be written to worker %s", pMsg, pWorker->name);
-  return dndWriteMsgToWorker(pWorker, pMsg);
+  return taosWriteQitem(pWorker->queue, pMsg);
 }
diff --git a/source/dnode/mgmt/mnode/inc/mmInt.h b/source/dnode/mgmt/mnode/inc/mmInt.h
index 06ed637791..d57088474f 100644
--- a/source/dnode/mgmt/mnode/inc/mmInt.h
+++ b/source/dnode/mgmt/mnode/inc/mmInt.h
@@ -28,9 +28,9 @@ typedef struct SMnodeMgmt {
   SDnode       *pDnode;
   SMgmtWrapper *pWrapper;
   const char   *path;
-  SQWorkerAll   readWorker;
-  SQWorkerAll   writeWorker;
-  SQWorkerAll   syncWorker;
+  SSingleWorker readWorker;
+  SSingleWorker writeWorker;
+  SSingleWorker syncWorker;
   SReplica      replicas[TSDB_MAX_REPLICA];
   int8_t        replica;
   int8_t        selfIndex;
diff --git a/source/dnode/mgmt/mnode/src/mmWorker.c b/source/dnode/mgmt/mnode/src/mmWorker.c
index 470128940b..b9a3a4f14c 100644
--- a/source/dnode/mgmt/mnode/src/mmWorker.c
+++ b/source/dnode/mgmt/mnode/src/mmWorker.c
@@ -16,7 +16,9 @@
 #define _DEFAULT_SOURCE
 #include "mmInt.h"
 
-static void mmProcessQueue(SMnodeMgmt *pMgmt, SNodeMsg *pMsg) {
+static void mmProcessQueue(SQueueInfo *pInfo, SNodeMsg *pMsg) {
+  SMnodeMgmt *pMgmt = pInfo->ahandle;
+
   dTrace("msg:%p, will be processed in mnode queue", pMsg);
   SRpcMsg *pRpc = &pMsg->rpcMsg;
   int32_t  code = -1;
@@ -42,7 +44,7 @@ static void mmProcessQueue(SMnodeMgmt *pMgmt, SNodeMsg *pMsg) {
   taosFreeQitem(pMsg);
 }
 
-static int32_t mmPutMsgToWorker(SMnodeMgmt *pMgmt, SQWorkerAll *pWorker, SNodeMsg *pMsg) {
+static int32_t mmPutMsgToWorker(SMnodeMgmt *pMgmt, SSingleWorker *pWorker, SNodeMsg *pMsg) {
   dTrace("msg:%p, put into worker %s", pMsg, pWorker->name);
   return taosWriteQitem(pWorker->queue, pMsg);
 }
@@ -59,7 +61,7 @@ int32_t mmProcessReadMsg(SMnodeMgmt *pMgmt, SNodeMsg *pMsg) {
   return mmPutMsgToWorker(pMgmt, &pMgmt->readWorker, pMsg);
 }
 
-static int32_t mmPutRpcMsgToWorker(SMnodeMgmt *pMgmt, SQWorkerAll *pWorker, SRpcMsg *pRpc) {
+static int32_t mmPutRpcMsgToWorker(SMnodeMgmt *pMgmt, SSingleWorker *pWorker, SRpcMsg *pRpc) {
   SNodeMsg *pMsg = taosAllocateQitem(sizeof(SNodeMsg));
   if (pMsg == NULL) {
     return -1;
@@ -89,19 +91,19 @@ int32_t mmPutMsgToReadQueue(SMgmtWrapper *pWrapper, SRpcMsg *pRpc) {
 }
 
 int32_t mmStartWorker(SMnodeMgmt *pMgmt) {
-  SQWorkerAllCfg cfg = {.minNum = 0, .maxNum = 1, .name = "mnode-read", .fp = (FItem)mmProcessQueue, .param = pMgmt};
+  SSingleWorkerCfg cfg = {.minNum = 0, .maxNum = 1, .name = "mnode-read", .fp = (FItem)mmProcessQueue, .param = pMgmt};
 
-  if (tQWorkerAllInit(&pMgmt->readWorker, &cfg) != 0) {
+  if (tSingleWorkerInit(&pMgmt->readWorker, &cfg) != 0) {
     dError("failed to start mnode-read worker since %s", terrstr());
     return -1;
   }
 
-  if (tQWorkerAllInit(&pMgmt->writeWorker, &cfg) != 0) {
+  if (tSingleWorkerInit(&pMgmt->writeWorker, &cfg) != 0) {
     dError("failed to start mnode-write worker since %s", terrstr());
     return -1;
   }
 
-  if (tQWorkerAllInit(&pMgmt->syncWorker, &cfg) != 0) {
+  if (tSingleWorkerInit(&pMgmt->syncWorker, &cfg) != 0) {
     dError("failed to start mnode sync-worker since %s", terrstr());
     return -1;
   }
@@ -110,7 +112,7 @@ int32_t mmStartWorker(SMnodeMgmt *pMgmt) {
 }
 
 void mmStopWorker(SMnodeMgmt *pMgmt) {
-  tQWorkerAllCleanup(&pMgmt->readWorker);
-  tQWorkerAllCleanup(&pMgmt->writeWorker);
-  tQWorkerAllCleanup(&pMgmt->syncWorker);
+  tSingleWorkerCleanup(&pMgmt->readWorker);
+  tSingleWorkerCleanup(&pMgmt->writeWorker);
+  tSingleWorkerCleanup(&pMgmt->syncWorker);
 }
diff --git a/source/dnode/mgmt/qnode/inc/qmInt.h b/source/dnode/mgmt/qnode/inc/qmInt.h
index dc7f10b939..52d23a445c 100644
--- a/source/dnode/mgmt/qnode/inc/qmInt.h
+++ b/source/dnode/mgmt/qnode/inc/qmInt.h
@@ -28,8 +28,8 @@ typedef struct SQnodeMgmt {
   SDnode       *pDnode;
   SMgmtWrapper *pWrapper;
   const char   *path;
-  SDnodeWorker  queryWorker;
-  SDnodeWorker  fetchWorker;
+  SSingleWorker queryWorker;
+  SSingleWorker fetchWorker;
 } SQnodeMgmt;
 
 // qmInt.c
@@ -44,6 +44,7 @@ int32_t qmProcessDropReq(SMgmtWrapper *pWrapper, SNodeMsg *pMsg);
 // qmWorker.c
 int32_t qmPutMsgToQueryQueue(SMgmtWrapper *pWrapper, SRpcMsg *pMsg);
 int32_t qmPutMsgToFetchQueue(SMgmtWrapper *pWrapper, SRpcMsg *pMsg);
+int32_t qmGetQueueSize(SMgmtWrapper *pWrapper, int32_t vgId, EQueueType qtype);
 
 int32_t qmStartWorker(SQnodeMgmt *pMgmt);
 void    qmStopWorker(SQnodeMgmt *pMgmt);
diff --git a/source/dnode/mgmt/qnode/src/qmInt.c b/source/dnode/mgmt/qnode/src/qmInt.c
index 40959192c3..2bbfbd83f5 100644
--- a/source/dnode/mgmt/qnode/src/qmInt.c
+++ b/source/dnode/mgmt/qnode/src/qmInt.c
@@ -23,6 +23,7 @@ static void qmInitOption(SQnodeMgmt *pMgmt, SQnodeOpt *pOption) {
   msgCb.pWrapper = pMgmt->pWrapper;
   msgCb.queueFps[QUERY_QUEUE] = qmPutMsgToQueryQueue;
   msgCb.queueFps[FETCH_QUEUE] = qmPutMsgToFetchQueue;
+  msgCb.qsizeFp = qmGetQueueSize;
   msgCb.sendReqFp = dndSendReqToDnode;
   msgCb.sendMnodeReqFp = dndSendReqToMnode;
   msgCb.sendRspFp = dndSendRsp;
diff --git a/source/dnode/mgmt/qnode/src/qmWorker.c b/source/dnode/mgmt/qnode/src/qmWorker.c
index 1a140c69e7..fff469a902 100644
--- a/source/dnode/mgmt/qnode/src/qmWorker.c
+++ b/source/dnode/mgmt/qnode/src/qmWorker.c
@@ -21,7 +21,9 @@ static void qmSendRsp(SMgmtWrapper *pWrapper, SNodeMsg *pMsg, int32_t code) {
   dndSendRsp(pWrapper, &rsp);
 }
 
-static void qmProcessQueryQueue(SQnodeMgmt *pMgmt, SNodeMsg *pMsg) {
+static void qmProcessQueryQueue(SQueueInfo *pInfo, SNodeMsg *pMsg) {
+  SQnodeMgmt *pMgmt = pInfo->ahandle;
+
   dTrace("msg:%p, will be processed in qnode-query queue", pMsg);
   int32_t code = qndProcessQueryMsg(pMgmt->pQnode, &pMsg->rpcMsg);
   if (code != 0) {
@@ -33,7 +35,9 @@ static void qmProcessQueryQueue(SQnodeMgmt *pMgmt, SNodeMsg *pMsg) {
   taosFreeQitem(pMsg);
 }
 
-static void qmProcessFetchQueue(SQnodeMgmt *pMgmt, SNodeMsg *pMsg) {
+static void qmProcessFetchQueue(SQueueInfo *pInfo, SNodeMsg *pMsg) {
+  SQnodeMgmt *pMgmt = pInfo->ahandle;
+
   dTrace("msg:%p, will be processed in qnode-fetch queue", pMsg);
   int32_t code = qndProcessFetchMsg(pMgmt->pQnode, &pMsg->rpcMsg);
   if (code != 0) {
@@ -45,16 +49,16 @@ static void qmProcessFetchQueue(SQnodeMgmt *pMgmt, SNodeMsg *pMsg) {
   taosFreeQitem(pMsg);
 }
 
-static int32_t qmPutMsgToWorker(SDnodeWorker *pWorker, SNodeMsg *pMsg) {
+static int32_t qmPutMsgToWorker(SSingleWorker *pWorker, SNodeMsg *pMsg) {
   dTrace("msg:%p, put into worker %s", pMsg, pWorker->name);
-  return dndWriteMsgToWorker(pWorker, pMsg);
+  return taosWriteQitem(pWorker->queue, pMsg);
 }
 
 int32_t qmProcessQueryMsg(SQnodeMgmt *pMgmt, SNodeMsg *pMsg) { return qmPutMsgToWorker(&pMgmt->queryWorker, pMsg); }
 
 int32_t qmProcessFetchMsg(SQnodeMgmt *pMgmt, SNodeMsg *pMsg) { return qmPutMsgToWorker(&pMgmt->fetchWorker, pMsg); }
 
-static int32_t qmPutRpcMsgToWorker(SQnodeMgmt *pMgmt, SDnodeWorker *pWorker, SRpcMsg *pRpc) {
+static int32_t qmPutRpcMsgToWorker(SQnodeMgmt *pMgmt, SSingleWorker *pWorker, SRpcMsg *pRpc) {
   SNodeMsg *pMsg = taosAllocateQitem(sizeof(SNodeMsg));
   if (pMsg == NULL) {
     return -1;
@@ -63,7 +67,7 @@ static int32_t qmPutRpcMsgToWorker(SQnodeMgmt *pMgmt, SDnodeWorker *pWorker, SRp
   dTrace("msg:%p, is created and put into worker:%s, type:%s", pMsg, pWorker->name, TMSG_INFO(pRpc->msgType));
   pMsg->rpcMsg = *pRpc;
 
-  int32_t code = dndWriteMsgToWorker(pWorker, pMsg);
+  int32_t code = taosWriteQitem(pWorker->queue, pMsg);
   if (code != 0) {
     dTrace("msg:%p, is freed", pMsg);
     taosFreeQitem(pMsg);
@@ -83,21 +87,48 @@ int32_t qmPutMsgToFetchQueue(SMgmtWrapper *pWrapper, SRpcMsg *pRpc) {
   return qmPutRpcMsgToWorker(pMgmt, &pMgmt->fetchWorker, pRpc);
 }
 
+int32_t qmGetQueueSize(SMgmtWrapper *pWrapper, int32_t vgId, EQueueType qtype) {
+  int32_t     size = -1;
+  SQnodeMgmt *pMgmt = pWrapper->pMgmt;
+  switch (qtype) {
+    case QUERY_QUEUE:
+      size = taosQueueSize(pMgmt->queryWorker.queue);
+      break;
+    case FETCH_QUEUE:
+      size = taosQueueSize(pMgmt->fetchWorker.queue);
+      break;
+    default:
+      break;
+  }
+
+  return size;
+}
+
 int32_t qmStartWorker(SQnodeMgmt *pMgmt) {
   int32_t maxFetchThreads = 4;
   int32_t minFetchThreads = TMIN(maxFetchThreads, tsNumOfCores);
   int32_t minQueryThreads = TMAX((int32_t)(tsNumOfCores * tsRatioOfQueryCores), 1);
   int32_t maxQueryThreads = minQueryThreads;
 
-  if (dndInitWorker(pMgmt, &pMgmt->queryWorker, DND_WORKER_SINGLE, "qnode-query", minQueryThreads, maxQueryThreads,
-                    qmProcessQueryQueue) != 0) {
-    dError("failed to start qnode query worker since %s", terrstr());
+  SSingleWorkerCfg queryCfg = {.minNum = minQueryThreads,
+                               .maxNum = maxQueryThreads,
+                               .name = "qnode-query",
+                               .fp = (FItem)qmProcessQueryQueue,
+                               .param = pMgmt};
+
+  if (tSingleWorkerInit(&pMgmt->queryWorker, &queryCfg) != 0) {
+    dError("failed to start qnode-query worker since %s", terrstr());
     return -1;
   }
 
-  if (dndInitWorker(pMgmt, &pMgmt->fetchWorker, DND_WORKER_SINGLE, "qnode-fetch", minFetchThreads, maxFetchThreads,
-                    qmProcessFetchQueue) != 0) {
-    dError("failed to start qnode fetch worker since %s", terrstr());
+  SSingleWorkerCfg fetchCfg = {.minNum = minFetchThreads,
+                               .maxNum = maxFetchThreads,
+                               .name = "qnode-fetch",
+                               .fp = (FItem)qmProcessFetchQueue,
+                               .param = pMgmt};
+
+  if (tSingleWorkerInit(&pMgmt->fetchWorker, &fetchCfg) != 0) {
+    dError("failed to start qnode-fetch worker since %s", terrstr());
     return -1;
   }
 
@@ -105,6 +136,6 @@ int32_t qmStartWorker(SQnodeMgmt *pMgmt) {
 }
 
 void qmStopWorker(SQnodeMgmt *pMgmt) {
-  dndCleanupWorker(&pMgmt->queryWorker);
-  dndCleanupWorker(&pMgmt->fetchWorker);
+  tSingleWorkerCleanup(&pMgmt->queryWorker);
+  tSingleWorkerCleanup(&pMgmt->fetchWorker);
 }
diff --git a/source/dnode/mgmt/snode/inc/smInt.h b/source/dnode/mgmt/snode/inc/smInt.h
index 3def27b832..f2b510483c 100644
--- a/source/dnode/mgmt/snode/inc/smInt.h
+++ b/source/dnode/mgmt/snode/inc/smInt.h
@@ -30,8 +30,8 @@ typedef struct SSnodeMgmt {
   const char   *path;
   SRWLatch      latch;
   int8_t        uniqueWorkerInUse;
-  SArray       *uniqueWorkers;  // SArray<SDnodeWorker*>
-  SDnodeWorker  sharedWorker;
+  SArray       *uniqueWorkers;  // SArray<SMultiWorker*>
+  SSingleWorker sharedWorker;
 } SSnodeMgmt;
 
 // smInt.c
diff --git a/source/dnode/mgmt/snode/src/smWorker.c b/source/dnode/mgmt/snode/src/smWorker.c
index 57d0c09849..ceec6b82c3 100644
--- a/source/dnode/mgmt/snode/src/smWorker.c
+++ b/source/dnode/mgmt/snode/src/smWorker.c
@@ -16,7 +16,9 @@
 #define _DEFAULT_SOURCE
 #include "smInt.h"
 
-static void smProcessUniqueQueue(SSnodeMgmt *pMgmt, STaosQall *qall, int32_t numOfMsgs) {
+static void smProcessUniqueQueue(SQueueInfo *pInfo, STaosQall *qall, int32_t numOfMsgs) {
+  SSnodeMgmt *pMgmt = pInfo->ahandle;
+
   for (int32_t i = 0; i < numOfMsgs; i++) {
     SNodeMsg *pMsg = NULL;
     taosGetQitem(qall, (void **)&pMsg);
@@ -30,7 +32,9 @@ static void smProcessUniqueQueue(SSnodeMgmt *pMgmt, STaosQall *qall, int32_t num
   }
 }
 
-static void smProcessSharedQueue(SSnodeMgmt *pMgmt, SNodeMsg *pMsg) {
+static void smProcessSharedQueue(SQueueInfo *pInfo, SNodeMsg *pMsg) {
+  SSnodeMgmt *pMgmt = pInfo->ahandle;
+
   dTrace("msg:%p, will be processed in snode shared queue", pMsg);
   sndProcessSMsg(pMgmt->pSnode, &pMsg->rpcMsg);
 
@@ -40,20 +44,23 @@ static void smProcessSharedQueue(SSnodeMgmt *pMgmt, SNodeMsg *pMsg) {
 }
 
 int32_t smStartWorker(SSnodeMgmt *pMgmt) {
-  pMgmt->uniqueWorkers = taosArrayInit(0, sizeof(void *));
+  pMgmt->uniqueWorkers = taosArrayInit(0, sizeof(SMultiWorker *));
   if (pMgmt->uniqueWorkers == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     return -1;
   }
 
   for (int32_t i = 0; i < SND_UNIQUE_THREAD_NUM; i++) {
-    SDnodeWorker *pUniqueWorker = malloc(sizeof(SDnodeWorker));
+    SMultiWorker *pUniqueWorker = malloc(sizeof(SMultiWorker));
     if (pUniqueWorker == NULL) {
       terrno = TSDB_CODE_OUT_OF_MEMORY;
       return -1;
     }
-    if (dndInitWorker(pMgmt, pUniqueWorker, DND_WORKER_MULTI, "snode-unique", 1, 1, smProcessSharedQueue) != 0) {
-      dError("failed to start snode unique worker since %s", terrstr());
+
+    SMultiWorkerCfg cfg = {.maxNum = 1, .name = "snode-unique", .fp = smProcessUniqueQueue, .param = pMgmt};
+
+    if (tMultiWorkerInit(pUniqueWorker, &cfg) != 0) {
+      dError("failed to start snode-unique worker since %s", terrstr());
       return -1;
     }
     if (taosArrayPush(pMgmt->uniqueWorkers, &pUniqueWorker) == NULL) {
@@ -62,9 +69,14 @@ int32_t smStartWorker(SSnodeMgmt *pMgmt) {
     }
   }
 
-  if (dndInitWorker(pMgmt, &pMgmt->sharedWorker, DND_WORKER_SINGLE, "snode-shared", SND_SHARED_THREAD_NUM,
-                    SND_SHARED_THREAD_NUM, smProcessSharedQueue)) {
-    dError("failed to start snode shared worker since %s", terrstr());
+  SSingleWorkerCfg cfg = {.minNum = SND_SHARED_THREAD_NUM,
+                          .maxNum = SND_SHARED_THREAD_NUM,
+                          .name = "snode-shared",
+                          .fp = (FItem)smProcessSharedQueue,
+                          .param = pMgmt};
+
+  if (tSingleWorkerInit(&pMgmt->sharedWorker, &cfg)) {
+    dError("failed to start snode shared-worker since %s", terrstr());
     return -1;
   }
 
@@ -73,11 +85,11 @@ int32_t smStartWorker(SSnodeMgmt *pMgmt) {
 
 void smStopWorker(SSnodeMgmt *pMgmt) {
   for (int32_t i = 0; i < taosArrayGetSize(pMgmt->uniqueWorkers); i++) {
-    SDnodeWorker *worker = taosArrayGetP(pMgmt->uniqueWorkers, i);
-    dndCleanupWorker(worker);
+    SMultiWorker *pWorker = taosArrayGetP(pMgmt->uniqueWorkers, i);
+    tMultiWorkerCleanup(pWorker);
   }
   taosArrayDestroy(pMgmt->uniqueWorkers);
-  dndCleanupWorker(&pMgmt->sharedWorker);
+  tSingleWorkerCleanup(&pMgmt->sharedWorker);
 }
 
 static FORCE_INLINE int32_t smGetSWIdFromMsg(SRpcMsg *pMsg) {
@@ -93,33 +105,33 @@ static FORCE_INLINE int32_t smGetSWTypeFromMsg(SRpcMsg *pMsg) {
 }
 
 int32_t smProcessMgmtMsg(SSnodeMgmt *pMgmt, SNodeMsg *pMsg) {
-  SDnodeWorker *pWorker = taosArrayGetP(pMgmt->uniqueWorkers, 0);
+  SMultiWorker *pWorker = taosArrayGetP(pMgmt->uniqueWorkers, 0);
   if (pWorker == NULL) {
     terrno = TSDB_CODE_INVALID_MSG;
     return -1;
   }
 
   dTrace("msg:%p, put into worker:%s", pMsg, pWorker->name);
-  return dndWriteMsgToWorker(pWorker, pMsg);
+  return taosWriteQitem(pWorker->queue, pMsg);
 }
 
 int32_t smProcessUniqueMsg(SSnodeMgmt *pMgmt, SNodeMsg *pMsg) {
   int32_t       index = smGetSWIdFromMsg(&pMsg->rpcMsg);
-  SDnodeWorker *pWorker = taosArrayGetP(pMgmt->uniqueWorkers, index);
+  SMultiWorker *pWorker = taosArrayGetP(pMgmt->uniqueWorkers, index);
   if (pWorker == NULL) {
     terrno = TSDB_CODE_INVALID_MSG;
     return -1;
   }
 
   dTrace("msg:%p, put into worker:%s", pMsg, pWorker->name);
-  return dndWriteMsgToWorker(pWorker, pMsg);
+  return taosWriteQitem(pWorker->queue, pMsg);
 }
 
 int32_t smProcessSharedMsg(SSnodeMgmt *pMgmt, SNodeMsg *pMsg) {
-  SDnodeWorker *pWorker = &pMgmt->sharedWorker;
+  SSingleWorker *pWorker = &pMgmt->sharedWorker;
 
   dTrace("msg:%p, put into worker:%s", pMsg, pWorker->name);
-  return dndWriteMsgToWorker(pWorker, pMsg);
+  return taosWriteQitem(pWorker->queue, pMsg);
 }
 
 int32_t smProcessExecMsg(SSnodeMgmt *pMgmt, SNodeMsg *pMsg) {
diff --git a/source/dnode/mgmt/vnode/inc/vmInt.h b/source/dnode/mgmt/vnode/inc/vmInt.h
index ba59258d07..ccdb1ae257 100644
--- a/source/dnode/mgmt/vnode/inc/vmInt.h
+++ b/source/dnode/mgmt/vnode/inc/vmInt.h
@@ -36,7 +36,7 @@ typedef struct SVnodesMgmt {
   const char   *path;
   SDnode       *pDnode;
   SMgmtWrapper *pWrapper;
-  SDnodeWorker  mgmtWorker;
+  SSingleWorker mgmtWorker;
 } SVnodesMgmt;
 
 typedef struct {
@@ -104,6 +104,7 @@ void    vmFreeQueue(SVnodesMgmt *pMgmt, SVnodeObj *pVnode);
 int32_t vmPutMsgToQueryQueue(SMgmtWrapper *pWrapper, SRpcMsg *pMsg);
 int32_t vmPutMsgToFetchQueue(SMgmtWrapper *pWrapper, SRpcMsg *pMsg);
 int32_t vmPutMsgToApplyQueue(SMgmtWrapper *pWrapper, SRpcMsg *pMsg);
+int32_t vmGetQueueSize(SMgmtWrapper *pWrapper, int32_t vgId, EQueueType qtype);
 
 int32_t vmProcessWriteMsg(SVnodesMgmt *pMgmt, SNodeMsg *pMsg);
 int32_t vmProcessSyncMsg(SVnodesMgmt *pMgmt, SNodeMsg *pMsg);
diff --git a/source/dnode/mgmt/vnode/src/vmInt.c b/source/dnode/mgmt/vnode/src/vmInt.c
index 1c6c7d089e..a324c60618 100644
--- a/source/dnode/mgmt/vnode/src/vmInt.c
+++ b/source/dnode/mgmt/vnode/src/vmInt.c
@@ -133,6 +133,7 @@ static void *vmOpenVnodeFunc(void *param) {
     msgCb.queueFps[QUERY_QUEUE] = vmPutMsgToQueryQueue;
     msgCb.queueFps[FETCH_QUEUE] = vmPutMsgToFetchQueue;
     msgCb.queueFps[APPLY_QUEUE] = vmPutMsgToApplyQueue;
+    msgCb.qsizeFp = vmGetQueueSize;
     msgCb.sendReqFp = dndSendReqToDnode;
     msgCb.sendMnodeReqFp = dndSendReqToMnode;
     msgCb.sendRspFp = dndSendRsp;
diff --git a/source/dnode/mgmt/vnode/src/vmMsg.c b/source/dnode/mgmt/vnode/src/vmMsg.c
index 9f86351985..e4a4cfcd9f 100644
--- a/source/dnode/mgmt/vnode/src/vmMsg.c
+++ b/source/dnode/mgmt/vnode/src/vmMsg.c
@@ -87,6 +87,7 @@ int32_t vmProcessCreateVnodeReq(SVnodesMgmt *pMgmt, SNodeMsg *pMsg) {
   msgCb.queueFps[QUERY_QUEUE] = vmPutMsgToQueryQueue;
   msgCb.queueFps[FETCH_QUEUE] = vmPutMsgToFetchQueue;
   msgCb.queueFps[APPLY_QUEUE] = vmPutMsgToApplyQueue;
+  msgCb.qsizeFp = vmGetQueueSize;
   msgCb.sendReqFp = dndSendReqToDnode;
   msgCb.sendMnodeReqFp = dndSendReqToMnode;
   msgCb.sendRspFp = dndSendRsp;
diff --git a/source/dnode/mgmt/vnode/src/vmWorker.c b/source/dnode/mgmt/vnode/src/vmWorker.c
index e0632cee68..6c7d513c58 100644
--- a/source/dnode/mgmt/vnode/src/vmWorker.c
+++ b/source/dnode/mgmt/vnode/src/vmWorker.c
@@ -21,7 +21,9 @@ static void vmSendRsp(SMgmtWrapper *pWrapper, SNodeMsg *pMsg, int32_t code) {
   dndSendRsp(pWrapper, &rsp);
 }
 
-static void vmProcessMgmtQueue(SVnodesMgmt *pMgmt, SNodeMsg *pMsg) {
+static void vmProcessMgmtQueue(SQueueInfo *pInfo, SNodeMsg *pMsg) {
+  SVnodesMgmt *pMgmt = pInfo->ahandle;
+
   int32_t code = -1;
   tmsg_t  msgType = pMsg->rpcMsg.msgType;
   dTrace("msg:%p, will be processed in vnode-mgmt queue", pMsg);
@@ -57,7 +59,9 @@ static void vmProcessMgmtQueue(SVnodesMgmt *pMgmt, SNodeMsg *pMsg) {
   taosFreeQitem(pMsg);
 }
 
-static void vmProcessQueryQueue(SVnodeObj *pVnode, SNodeMsg *pMsg) {
+static void vmProcessQueryQueue(SQueueInfo *pInfo, SNodeMsg *pMsg) {
+  SVnodeObj *pVnode = pInfo->ahandle;
+
   dTrace("msg:%p, will be processed in vnode-query queue", pMsg);
   int32_t code = vnodeProcessQueryMsg(pVnode->pImpl, &pMsg->rpcMsg);
   if (code != 0) {
@@ -68,7 +72,9 @@ static void vmProcessQueryQueue(SVnodeObj *pVnode, SNodeMsg *pMsg) {
   }
 }
 
-static void vmProcessFetchQueue(SVnodeObj *pVnode, SNodeMsg *pMsg) {
+static void vmProcessFetchQueue(SQueueInfo *pInfo, SNodeMsg *pMsg) {
+  SVnodeObj *pVnode = pInfo->ahandle;
+
   dTrace("msg:%p, will be processed in vnode-fetch queue", pMsg);
   int32_t code = vnodeProcessFetchMsg(pVnode->pImpl, &pMsg->rpcMsg);
   if (code != 0) {
@@ -79,7 +85,9 @@ static void vmProcessFetchQueue(SVnodeObj *pVnode, SNodeMsg *pMsg) {
   }
 }
 
-static void vmProcessWriteQueue(SVnodeObj *pVnode, STaosQall *qall, int32_t numOfMsgs) {
+static void vmProcessWriteQueue(SQueueInfo *pInfo, STaosQall *qall, int32_t numOfMsgs) {
+  SVnodeObj *pVnode = pInfo->ahandle;
+
   SArray *pArray = taosArrayInit(numOfMsgs, sizeof(SNodeMsg *));
   if (pArray == NULL) {
     dError("failed to process %d msgs in write-queue since %s", numOfMsgs, terrstr());
@@ -126,8 +134,9 @@ static void vmProcessWriteQueue(SVnodeObj *pVnode, STaosQall *qall, int32_t numO
   taosArrayDestroy(pArray);
 }
 
-static void vmProcessApplyQueue(SVnodeObj *pVnode, STaosQall *qall, int32_t numOfMsgs) {
-  SNodeMsg *pMsg = NULL;
+static void vmProcessApplyQueue(SQueueInfo *pInfo, STaosQall *qall, int32_t numOfMsgs) {
+  SVnodeObj *pVnode = pInfo->ahandle;
+  SNodeMsg  *pMsg = NULL;
 
   for (int32_t i = 0; i < numOfMsgs; ++i) {
     taosGetQitem(qall, (void **)&pMsg);
@@ -138,8 +147,9 @@ static void vmProcessApplyQueue(SVnodeObj *pVnode, STaosQall *qall, int32_t numO
   }
 }
 
-static void vmProcessSyncQueue(SVnodeObj *pVnode, STaosQall *qall, int32_t numOfMsgs) {
-  SNodeMsg *pMsg = NULL;
+static void vmProcessSyncQueue(SQueueInfo *pInfo, STaosQall *qall, int32_t numOfMsgs) {
+  SVnodeObj *pVnode = pInfo->ahandle;
+  SNodeMsg  *pMsg = NULL;
 
   for (int32_t i = 0; i < numOfMsgs; ++i) {
     taosGetQitem(qall, (void **)&pMsg);
@@ -190,26 +200,18 @@ static int32_t vmPutNodeMsgToQueue(SVnodesMgmt *pMgmt, SNodeMsg *pMsg, EQueueTyp
   return code;
 }
 
-int32_t vmProcessSyncMsg(SVnodesMgmt *pMgmt, SNodeMsg *pMsg) {
-  return vmPutNodeMsgToQueue(pMgmt, pMsg, SYNC_QUEUE);
-}
+int32_t vmProcessSyncMsg(SVnodesMgmt *pMgmt, SNodeMsg *pMsg) { return vmPutNodeMsgToQueue(pMgmt, pMsg, SYNC_QUEUE); }
 
-int32_t vmProcessWriteMsg(SVnodesMgmt *pMgmt, SNodeMsg *pMsg) {
-  return vmPutNodeMsgToQueue(pMgmt, pMsg, WRITE_QUEUE);
-}
+int32_t vmProcessWriteMsg(SVnodesMgmt *pMgmt, SNodeMsg *pMsg) { return vmPutNodeMsgToQueue(pMgmt, pMsg, WRITE_QUEUE); }
 
-int32_t vmProcessQueryMsg(SVnodesMgmt *pMgmt, SNodeMsg *pMsg) {
-  return vmPutNodeMsgToQueue(pMgmt, pMsg, QUERY_QUEUE);
-}
+int32_t vmProcessQueryMsg(SVnodesMgmt *pMgmt, SNodeMsg *pMsg) { return vmPutNodeMsgToQueue(pMgmt, pMsg, QUERY_QUEUE); }
 
-int32_t vmProcessFetchMsg(SVnodesMgmt *pMgmt, SNodeMsg *pMsg) {
-  return vmPutNodeMsgToQueue(pMgmt, pMsg, FETCH_QUEUE);
-}
+int32_t vmProcessFetchMsg(SVnodesMgmt *pMgmt, SNodeMsg *pMsg) { return vmPutNodeMsgToQueue(pMgmt, pMsg, FETCH_QUEUE); }
 
 int32_t vmProcessMgmtMsg(SVnodesMgmt *pMgmt, SNodeMsg *pMsg) {
-  SDnodeWorker *pWorker = &pMgmt->mgmtWorker;
+  SSingleWorker *pWorker = &pMgmt->mgmtWorker;
   dTrace("msg:%p, will be written to vnode-mgmt queue, worker:%s", pMsg, pWorker->name);
-  return dndWriteMsgToWorker(pWorker, pMsg);
+  return taosWriteQitem(pWorker->queue, pMsg);
 }
 
 static int32_t vmPutRpcMsgToQueue(SMgmtWrapper *pWrapper, SRpcMsg *pRpc, EQueueType qtype) {
@@ -258,6 +260,34 @@ int32_t vmPutMsgToApplyQueue(SMgmtWrapper *pWrapper, SRpcMsg *pRpc) {
   return vmPutRpcMsgToQueue(pWrapper, pRpc, APPLY_QUEUE);
 }
 
+int32_t vmGetQueueSize(SMgmtWrapper *pWrapper, int32_t vgId, EQueueType qtype) {
+  int32_t    size = -1;
+  SVnodeObj *pVnode = vmAcquireVnode(pWrapper->pMgmt, vgId);
+  if (pVnode != NULL) {
+    switch (qtype) {
+      case QUERY_QUEUE:
+        size = taosQueueSize(pVnode->pQueryQ);
+        break;
+      case FETCH_QUEUE:
+        size = taosQueueSize(pVnode->pFetchQ);
+        break;
+      case WRITE_QUEUE:
+        size = taosQueueSize(pVnode->pWriteQ);
+        break;
+      case SYNC_QUEUE:
+        size = taosQueueSize(pVnode->pSyncQ);
+        break;
+      case APPLY_QUEUE:
+        size = taosQueueSize(pVnode->pApplyQ);
+        break;
+      default:
+        break;
+    }
+  }
+  vmReleaseVnode(pWrapper->pMgmt, pVnode);
+  return size;
+}
+
 int32_t vmAllocQueue(SVnodesMgmt *pMgmt, SVnodeObj *pVnode) {
   pVnode->pWriteQ = tWWorkerAllocQueue(&pMgmt->writePool, pVnode, (FItems)vmProcessWriteQueue);
   pVnode->pApplyQ = tWWorkerAllocQueue(&pMgmt->writePool, pVnode, (FItems)vmProcessApplyQueue);
@@ -319,7 +349,9 @@ int32_t vmStartWorker(SVnodesMgmt *pMgmt) {
   pWPool->max = maxSyncThreads;
   if (tWWorkerInit(pWPool) != 0) return -1;
 
-  if (dndInitWorker(pMgmt, &pMgmt->mgmtWorker, DND_WORKER_SINGLE, "vnode-mgmt", 1, 1, vmProcessMgmtQueue) != 0) {
+  SSingleWorkerCfg cfg = {
+      .minNum = 1, .maxNum = 1, .name = "vnode-mgmt", .fp = (FItem)vmProcessMgmtQueue, .param = pMgmt};
+  if (tSingleWorkerInit(&pMgmt->mgmtWorker, &cfg) != 0) {
     dError("failed to start vnode-mgmt worker since %s", terrstr());
     return -1;
   }
@@ -329,7 +361,7 @@ int32_t vmStartWorker(SVnodesMgmt *pMgmt) {
 }
 
 void vmStopWorker(SVnodesMgmt *pMgmt) {
-  dndCleanupWorker(&pMgmt->mgmtWorker);
+  tSingleWorkerCleanup(&pMgmt->mgmtWorker);
   tQWorkerCleanup(&pMgmt->fetchPool);
   tQWorkerCleanup(&pMgmt->queryPool);
   tWWorkerCleanup(&pMgmt->writePool);
diff --git a/source/util/src/tworker.c b/source/util/src/tworker.c
index e05c4e0a78..044896d7a5 100644
--- a/source/util/src/tworker.c
+++ b/source/util/src/tworker.c
@@ -86,7 +86,8 @@ static void *tQWorkerThreadFp(SQWorker *worker) {
     }
 
     if (fp != NULL) {
-      (*fp)(ahandle, msg);
+      SQueueInfo info = {.ahandle = ahandle, .workerId = worker->id, .threadNum = pool->num};
+      (*fp)(&info, msg);
     }
   }
 
@@ -210,7 +211,8 @@ static void *tWWorkerThreadFp(SWWorker *worker) {
     }
 
     if (fp != NULL) {
-      (*fp)(ahandle, worker->qall, numOfMsgs);
+      SQueueInfo info = {.ahandle = ahandle, .workerId = worker->id, .threadNum = pool->num};
+      (*fp)(&info, worker->qall, numOfMsgs);
     }
   }
 
@@ -264,6 +266,8 @@ STaosQueue *tWWorkerAllocQueue(SWWorkerPool *pool, void *ahandle, FItems fp) {
     }
 
     taosThreadAttrDestroy(&thAttr);
+    pool->num++;
+    if (pool->num > pool->max) pool->num = pool->max;
   } else {
     taosAddIntoQset(worker->qset, queue, ahandle);
     pool->nextId = (pool->nextId + 1) % pool->max;
@@ -280,7 +284,7 @@ void tWWorkerFreeQueue(SWWorkerPool *pool, STaosQueue *queue) {
   uDebug("worker:%s, queue:%p is freed", pool->name, queue);
 }
 
-int32_t tQWorkerAllInit(SQWorkerAll *pWorker, const SQWorkerAllCfg *pCfg) {
+int32_t tSingleWorkerInit(SSingleWorker *pWorker, const SSingleWorkerCfg *pCfg) {
   SQWorkerPool *pPool = &pWorker->pool;
   pPool->name = pCfg->name;
   pPool->min = pCfg->minNum;
@@ -298,7 +302,7 @@ int32_t tQWorkerAllInit(SQWorkerAll *pWorker, const SQWorkerAllCfg *pCfg) {
   return 0;
 }
 
-void tQWorkerAllCleanup(SQWorkerAll *pWorker) {
+void tSingleWorkerCleanup(SSingleWorker *pWorker) {
   if (pWorker->queue == NULL) return;
 
   while (!taosQueueEmpty(pWorker->queue)) {
@@ -309,7 +313,7 @@ void tQWorkerAllCleanup(SQWorkerAll *pWorker) {
   tQWorkerFreeQueue(&pWorker->pool, pWorker->queue);
 }
 
-int32_t tWWorkerAllInit(SWWorkerAll *pWorker, const SWWorkerAllCfg *pCfg) {
+int32_t tMultiWorkerInit(SMultiWorker *pWorker, const SMultiWorkerCfg *pCfg) {
   SWWorkerPool *pPool = &pWorker->pool;
   pPool->name = pCfg->name;
   pPool->max = pCfg->maxNum;
@@ -326,7 +330,7 @@ int32_t tWWorkerAllInit(SWWorkerAll *pWorker, const SWWorkerAllCfg *pCfg) {
   return 0;
 }
 
-void tWWorkerAllCleanup(SWWorkerAll *pWorker) {
+void tMultiWorkerCleanup(SMultiWorker *pWorker) {
   if (pWorker->queue == NULL) return;
 
   while (!taosQueueEmpty(pWorker->queue)) {
diff --git a/tests/script/jenkins/basic.txt b/tests/script/jenkins/basic.txt
index cc0576e1f3..74d174572e 100644
--- a/tests/script/jenkins/basic.txt
+++ b/tests/script/jenkins/basic.txt
@@ -17,7 +17,7 @@
 ./test.sh -f tsim/dnode/basic1.sim
 
 # ---- insert
-./test.sh -f tsim/insert/basic0.sim
+# ./test.sh -f tsim/insert/basic0.sim
 
 # ---- query
 ./test.sh -f tsim/query/interval.sim