diff --git a/include/libs/catalog/catalog.h b/include/libs/catalog/catalog.h
index f61073c9a5c31ba92752dcec8071a50c78b6999d..b88afcb39df49c518b41968eee74638ca2143ae1 100644
--- a/include/libs/catalog/catalog.h
+++ b/include/libs/catalog/catalog.h
@@ -213,7 +213,6 @@ int32_t catalogGetTableHashVgroup(SCatalog* pCatalog, void * pTransporter, const
  */
 int32_t catalogGetAllMeta(SCatalog* pCatalog, void *pTransporter, const SEpSet* pMgmtEps, const SCatalogReq* pReq, SMetaData* pRsp);
 
-
 int32_t catalogGetQnodeList(SCatalog* pCatalog, void *pTransporter, const SEpSet* pMgmtEps, SArray* pQnodeList);
 
 int32_t catalogGetExpiredSTables(SCatalog* pCatalog, SSTableMetaVersion **stables, uint32_t *num);
diff --git a/source/libs/parser/src/parInsert.c b/source/libs/parser/src/parInsert.c
index cdccf0b1a17a15bb132ba4d53c2c6fda5bba9878..99c849634d841993b5abac91dc59d9d0d79d1d89 100644
--- a/source/libs/parser/src/parInsert.c
+++ b/source/libs/parser/src/parInsert.c
@@ -1325,7 +1325,6 @@ int32_t qBindStmtColsValue(void *pBlock, TAOS_BIND_v2 *bind, char *msgBuf, int32
     STSRow* row = (STSRow*)(pDataBlock->pData + pDataBlock->size);  // skip the SSubmitBlk header
     tdSRowResetBuf(pBuilder, row);
     
-    // 1. set the parsed value from sql string
     for (int c = 0; c < spd->numOfBound; ++c) {
       SSchema* pColSchema = &pSchema[spd->boundColumns[c] - 1];
 
diff --git a/source/libs/qworker/inc/qworkerMsg.h b/source/libs/qworker/inc/qworkerMsg.h
index c0f4d6d1574c0e9b843d600ac81c84a2a6264f50..fb1950d16bb6dafcbf8c44537e94a33d51b58cf3 100644
--- a/source/libs/qworker/inc/qworkerMsg.h
+++ b/source/libs/qworker/inc/qworkerMsg.h
@@ -43,7 +43,8 @@ void    qwFreeFetchRsp(void *msg);
 int32_t qwMallocFetchRsp(int32_t length, SRetrieveTableRsp **rsp);
 int32_t qwGetSchTasksStatus(SQWorkerMgmt *mgmt, uint64_t sId, SSchedulerStatusRsp **rsp);
 int32_t qwBuildAndSendHbRsp(SQWConnInfo *pConn, SSchedulerHbRsp *rsp, int32_t code);
-int32_t qwRegisterBrokenLinkArg(QW_FPARAMS_DEF, SQWConnInfo *pConn);
+int32_t qwRegisterQueryBrokenLinkArg(QW_FPARAMS_DEF, SQWConnInfo *pConn);
+int32_t qwRegisterHbBrokenLinkArg(SQWorkerMgmt *mgmt, uint64_t sId, SQWConnInfo *pConn);
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/qworker/src/qworker.c b/source/libs/qworker/src/qworker.c
index f97d7ffae0b344716f4947f436bb89e0ad665fd0..a74c28cf5395c7e37b382654e89234d5e8f93ba1 100644
--- a/source/libs/qworker/src/qworker.c
+++ b/source/libs/qworker/src/qworker.c
@@ -948,7 +948,7 @@ int32_t qwProcessQuery(QW_FPARAMS_DEF, SQWMsg *qwMsg, int8_t taskType, int8_t ex
   DataSinkHandle sinkHandle = NULL;
   SQWTaskCtx *ctx = NULL;
 
-  QW_ERR_JRET(qwRegisterBrokenLinkArg(QW_FPARAMS(), &qwMsg->connInfo));
+  QW_ERR_JRET(qwRegisterQueryBrokenLinkArg(QW_FPARAMS(), &qwMsg->connInfo));
 
   QW_ERR_JRET(qwHandlePrePhaseEvents(QW_FPARAMS(), QW_PHASE_PRE_QUERY, &input, NULL));
 
@@ -1285,23 +1285,51 @@ _return:
   QW_RET(TSDB_CODE_SUCCESS);
 }
 
+int32_t qwProcessHbLinkBroken(SQWorkerMgmt *mgmt, SQWMsg *qwMsg, SSchedulerHbReq *req) {
+  int32_t code = 0;
+  SSchedulerHbRsp rsp = {0};
+  SQWSchStatus *sch = NULL;
+
+  QW_ERR_RET(qwAcquireAddScheduler(mgmt, req->sId, QW_READ, &sch));
+
+  QW_LOCK(QW_WRITE, &sch->hbConnLock);
+
+  if (qwMsg->connInfo.handle == sch->hbConnInfo.handle) {
+    tmsgReleaseHandle(sch->hbConnInfo.handle, TAOS_CONN_SERVER);
+    sch->hbConnInfo.handle = NULL;
+    sch->hbConnInfo.ahandle = NULL;
+
+    QW_DLOG("release hb handle due to connection broken, handle:%p", qwMsg->connInfo.handle);
+  } else {
+    QW_DLOG("ignore hb connection broken, handle:%p, currentHandle:%p", qwMsg->connInfo.handle, sch->hbConnInfo.handle);
+  }
+  
+  QW_UNLOCK(QW_WRITE, &sch->hbConnLock);
+  
+  qwReleaseScheduler(QW_READ, mgmt);
+  
+  QW_RET(TSDB_CODE_SUCCESS);
+}
+
 int32_t qwProcessHb(SQWorkerMgmt *mgmt, SQWMsg *qwMsg, SSchedulerHbReq *req) {
   int32_t code = 0;
   SSchedulerHbRsp rsp = {0};
   SQWSchStatus *sch = NULL;
-  uint64_t seqId = 0;
-  void *origHandle = NULL;
 
-  memcpy(&rsp.epId, &req->epId, sizeof(req->epId));
+  if (qwMsg->code) {
+    QW_RET(qwProcessHbLinkBroken(mgmt, qwMsg, req));
+  }
   
   QW_ERR_JRET(qwAcquireAddScheduler(mgmt, req->sId, QW_READ, &sch));
 
+  QW_ERR_JRET(qwRegisterHbBrokenLinkArg(mgmt, req->sId, &qwMsg->connInfo));
+
   QW_LOCK(QW_WRITE, &sch->hbConnLock);
 
   if (sch->hbConnInfo.handle) {
     tmsgReleaseHandle(sch->hbConnInfo.handle, TAOS_CONN_SERVER);
   }
-  
+
   memcpy(&sch->hbConnInfo, &qwMsg->connInfo, sizeof(qwMsg->connInfo));
   memcpy(&sch->hbEpId, &req->epId, sizeof(req->epId));
   
@@ -1314,7 +1342,14 @@ int32_t qwProcessHb(SQWorkerMgmt *mgmt, SQWMsg *qwMsg, SSchedulerHbReq *req) {
 
 _return:
 
+  memcpy(&rsp.epId, &req->epId, sizeof(req->epId));
+
   qwBuildAndSendHbRsp(&qwMsg->connInfo, &rsp, code);
+
+  if (code) {
+    tmsgReleaseHandle(qwMsg->connInfo.handle, TAOS_CONN_SERVER);
+  }
+  
   QW_DLOG("hb rsp send, handle:%p, code:%x - %s", qwMsg->connInfo.handle, code, tstrerror(code));
   
   QW_RET(TSDB_CODE_SUCCESS);
diff --git a/source/libs/qworker/src/qworkerMsg.c b/source/libs/qworker/src/qworkerMsg.c
index 15a42d3a3157411ba3a9bbbdaa6d0576d41ce7d4..6723eb21c1c6ad96db086fc7e08c9826249fc5c7 100644
--- a/source/libs/qworker/src/qworkerMsg.c
+++ b/source/libs/qworker/src/qworkerMsg.c
@@ -286,7 +286,7 @@ int32_t qwBuildAndSendCQueryMsg(QW_FPARAMS_DEF, SQWConnInfo *pConn) {
 }
 
 
-int32_t qwRegisterBrokenLinkArg(QW_FPARAMS_DEF, SQWConnInfo *pConn) {
+int32_t qwRegisterQueryBrokenLinkArg(QW_FPARAMS_DEF, SQWConnInfo *pConn) {
   STaskDropReq * req = (STaskDropReq *)rpcMallocCont(sizeof(STaskDropReq));
   if (NULL == req) {
     QW_SCH_TASK_ELOG("rpcMallocCont %d failed", (int32_t)sizeof(STaskDropReq));
@@ -313,6 +313,42 @@ int32_t qwRegisterBrokenLinkArg(QW_FPARAMS_DEF, SQWConnInfo *pConn) {
   return TSDB_CODE_SUCCESS;
 }
 
+int32_t qwRegisterHbBrokenLinkArg(SQWorkerMgmt *mgmt, uint64_t sId, SQWConnInfo *pConn) {
+  SSchedulerHbReq req = {0};
+  req.header.vgId = mgmt->nodeId;
+  req.sId = sId;
+
+  int32_t msgSize = tSerializeSSchedulerHbReq(NULL, 0, &req);
+  if (msgSize < 0) {
+    QW_SCH_ELOG("tSerializeSSchedulerHbReq hbReq failed, size:%d", msgSize);
+    QW_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
+  }
+  void *msg = rpcMallocCont(msgSize);
+  if (NULL == msg) {
+    QW_SCH_ELOG("calloc %d failed", msgSize);
+    QW_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
+  }
+  if (tSerializeSSchedulerHbReq(msg, msgSize, &req) < 0) {
+    QW_SCH_ELOG("tSerializeSSchedulerHbReq hbReq failed, size:%d", msgSize);
+    taosMemoryFree(msg);
+    QW_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
+  }
+  
+  SRpcMsg pMsg = {
+    .handle  = pConn->handle,
+    .ahandle = pConn->ahandle,
+    .msgType = TDMT_VND_QUERY_HEARTBEAT,
+    .pCont   = msg,
+    .contLen = sizeof(SSchedulerHbReq),
+    .code    = TSDB_CODE_RPC_NETWORK_UNAVAIL,
+  };
+  
+  tmsgRegisterBrokenLinkArg(&mgmt->msgCb, &pMsg);
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
 
 int32_t qWorkerProcessQueryMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg) {
   if (NULL == node || NULL == qWorkerMgmt || NULL == pMsg) {
@@ -587,10 +623,14 @@ int32_t qWorkerProcessHbMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg) {
   }
 
   uint64_t sId = req.sId;
-  SQWMsg qwMsg = {.node = node, .msg = NULL, .msgLen = 0};
+  SQWMsg qwMsg = {.node = node, .msg = NULL, .msgLen = 0, .code = pMsg->code};
   qwMsg.connInfo.handle = pMsg->handle;
   qwMsg.connInfo.ahandle = pMsg->ahandle;
 
+  if (TSDB_CODE_RPC_NETWORK_UNAVAIL == pMsg->code) {
+    QW_SCH_DLOG("receive Hb msg due to network broken, error:%s", tstrerror(pMsg->code));    
+  }
+
   QW_SCH_DLOG("processHb start, node:%p, handle:%p", node, pMsg->handle);
 
   QW_ERR_RET(qwProcessHb(mgmt, &qwMsg, &req));