diff --git a/source/libs/qworker/inc/qwInt.h b/source/libs/qworker/inc/qwInt.h
index d3347f4d1fd947003cbb628d994c0c5265e83856..3c6c02ede6e92426479c3c178b551eebccf48289 100644
--- a/source/libs/qworker/inc/qwInt.h
+++ b/source/libs/qworker/inc/qwInt.h
@@ -75,6 +75,8 @@ typedef struct SQWDebug {
   bool lockEnable;
   bool statusEnable;
   bool dumpEnable;
+  bool sleepSimulate;
+  bool deadSimulate;
   bool tmp;
 } SQWDebug;
 
diff --git a/source/libs/qworker/inc/qwMsg.h b/source/libs/qworker/inc/qwMsg.h
index acb7004a510cb171562cbe94775f5149fabc7847..16fe6b21c270f89daf4aa1319f1ad50bff4321e5 100644
--- a/source/libs/qworker/inc/qwMsg.h
+++ b/source/libs/qworker/inc/qwMsg.h
@@ -40,6 +40,7 @@ void    qwBuildFetchRsp(void *msg, SOutputData *input, int32_t len, bool qComple
 int32_t qwBuildAndSendCQueryMsg(QW_FPARAMS_DEF, SRpcHandleInfo *pConn);
 int32_t qwBuildAndSendQueryRsp(int32_t rspType, SRpcHandleInfo *pConn, int32_t code, SQWTaskCtx *ctx);
 int32_t qwBuildAndSendExplainRsp(SRpcHandleInfo *pConn, SExplainExecInfo *execInfo, int32_t num);
+int32_t qwBuildAndSendErrorRsp(int32_t rspType, SRpcHandleInfo *pConn, int32_t code);
 void    qwFreeFetchRsp(void *msg);
 int32_t qwMallocFetchRsp(int32_t length, SRetrieveTableRsp **rsp);
 int32_t qwBuildAndSendHbRsp(SRpcHandleInfo *pConn, SSchedulerHbRsp *rsp, int32_t code);
diff --git a/source/libs/qworker/src/qwDbg.c b/source/libs/qworker/src/qwDbg.c
index 893f31acd1feae8a56deb890c1f4371d30c78fbe..cd54c5e5f9ca76ff0f73cacb785e2757b5bd246e 100644
--- a/source/libs/qworker/src/qwDbg.c
+++ b/source/libs/qworker/src/qwDbg.c
@@ -9,7 +9,7 @@
 #include "tmsg.h"
 #include "tname.h"
 
-SQWDebug     gQWDebug = {.statusEnable = true, .dumpEnable = false, .tmp = false};
+SQWDebug     gQWDebug = {.statusEnable = true, .dumpEnable = true, .tmp = false};
 
 int32_t qwDbgValidateStatus(QW_FPARAMS_DEF, int8_t oriStatus, int8_t newStatus, bool *ignore) {
   if (!gQWDebug.statusEnable) {
@@ -175,29 +175,61 @@ int32_t qwDbgResponseRedirect(SQWMsg *qwMsg, SQWTaskCtx *ctx) {
   return TSDB_CODE_SUCCESS;
 }
 
+void qwDbgSimulateSleep() {
+  if (!gQWDebug.sleepSimulate) {
+    return;
+  }
+
+  taosSsleep(taosRand() % 10);
+}
+
+void qwDbgSimulateDead(QW_FPARAMS_DEF, SQWTaskCtx *ctx, int32_t msgType) {
+  if (!gQWDebug.deadSimulate) {
+    return;
+  }
+
+  //FETCH OR QUERY USE DIFFERENT CONNINFO
+  qwBuildAndSendErrorRsp(msgType + 1, ctx->dataConnInfo, TSDB_CODE_RPC_BROKEN_LINK);
+
+  qwDropTask(QW_FPARAMS());
+}
+
+
 
 int32_t qwDbgEnableDebug(char *option) {
   if (0 == strcasecmp(option, "lock")) {
     gQWDebug.lockEnable = true;
-    qDebug("qw lock debug enabled");
+    qError("qw lock debug enabled");
     return TSDB_CODE_SUCCESS;
   }
 
   if (0 == strcasecmp(option, "status")) {
     gQWDebug.statusEnable = true;
-    qDebug("qw status debug enabled");
+    qError("qw status debug enabled");
     return TSDB_CODE_SUCCESS;
   }
 
   if (0 == strcasecmp(option, "dump")) {
     gQWDebug.dumpEnable = true;
-    qDebug("qw dump debug enabled");
+    qError("qw dump debug enabled");
+    return TSDB_CODE_SUCCESS;
+  }
+
+  if (0 == strcasecmp(option, "sleep")) {
+    gQWDebug.sleepSimulate = true;
+    qError("qw sleep debug enabled");
+    return TSDB_CODE_SUCCESS;
+  }
+
+  if (0 == strcasecmp(option, "dead")) {
+    gQWDebug.sleepSimulate = true;
+    qError("qw dead debug enabled");
     return TSDB_CODE_SUCCESS;
   }
 
   if (0 == strcasecmp(option, "tmp")) {
     gQWDebug.tmp = true;
-    qDebug("qw tmp debug enabled");
+    qError("qw tmp debug enabled");
     return TSDB_CODE_SUCCESS;
   }
 
diff --git a/source/libs/qworker/src/qwMsg.c b/source/libs/qworker/src/qwMsg.c
index 147ce76fc27eaa15e31e9ce2d928cf1d78c025f0..8bbd03f7352050b913064a41c9f34e7d70632700 100644
--- a/source/libs/qworker/src/qwMsg.c
+++ b/source/libs/qworker/src/qwMsg.c
@@ -43,6 +43,20 @@ void qwFreeFetchRsp(void *msg) {
   }
 }
 
+int32_t qwBuildAndSendErrorRsp(int32_t rspType, SRpcHandleInfo *pConn, int32_t code) {
+  SRpcMsg rpcRsp = {
+      .msgType = rspType,
+      .pCont = NULL,
+      .contLen = 0,
+      .code = code,
+      .info = *pConn,
+  };
+
+  tmsgSendRsp(&rpcRsp);
+
+  return TSDB_CODE_SUCCESS;
+}
+
 int32_t qwBuildAndSendQueryRsp(int32_t rspType, SRpcHandleInfo *pConn, int32_t code, SQWTaskCtx *ctx) {
   STbVerInfo* tbInfo = ctx ? &ctx->tbInfo : NULL;
   int64_t affectedRows = ctx ? ctx->affectedRows : 0;
diff --git a/source/libs/scheduler/src/schRemote.c b/source/libs/scheduler/src/schRemote.c
index 41d9f46a87acb70a00c64ebcd2fd4cfcf29ff6e5..ec07ee85fdc8ba7c3a988bdf0a825bc8e8921710 100644
--- a/source/libs/scheduler/src/schRemote.c
+++ b/source/libs/scheduler/src/schRemote.c
@@ -1010,7 +1010,7 @@ int32_t schBuildAndSendMsg(SSchJob *pJob, SSchTask *pTask, SQueryNodeAddr *addr,
       memcpy(pMsg->msg + len, pTask->msg, pTask->msgLen);
 
       persistHandle = true;
-      SCH_SET_TASK_HANDLE(pTask, rpcAllocHandle());
+      //SCH_SET_TASK_HANDLE(pTask, rpcAllocHandle());
       break;
     }
     case TDMT_SCH_FETCH: