diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index 22cedcd571..a837dd9708 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -2291,6 +2291,10 @@ typedef struct {
   // TODO: other info needed by task
 } SStreamTaskExecReq;
 
+typedef struct {
+  int32_t reserved;
+} SStreamTaskExecRsp;
+
 #pragma pack(pop)
 
 #ifdef __cplusplus
diff --git a/include/common/tmsgdef.h b/include/common/tmsgdef.h
index b30a325d7c..6a07887721 100644
--- a/include/common/tmsgdef.h
+++ b/include/common/tmsgdef.h
@@ -200,6 +200,7 @@ enum {
   // Requests handled by SNODE
   TD_NEW_MSG_SEG(TDMT_SND_MSG)
   TD_DEF_MSG_TYPE(TDMT_SND_TASK_DEPLOY, "snode-task-deploy", SStreamTaskDeployReq, SStreamTaskDeployRsp)
+  TD_DEF_MSG_TYPE(TDMT_SND_TASK_EXEC, "snode-task-exec", SStreamTaskExecReq, SStreamTaskExecRsp)
 
 #if defined(TD_MSG_NUMBER_)
   TDMT_MAX
diff --git a/include/util/tencode.h b/include/util/tencode.h
index c058eebb50..cbbd55c8a3 100644
--- a/include/util/tencode.h
+++ b/include/util/tencode.h
@@ -402,10 +402,33 @@ static int32_t tDecodeCStrTo(SCoder* pDecoder, char* val) {
   return 0;
 }
 
+static FORCE_INLINE int32_t tDecodeBinaryAlloc(SCoder* pDecoder, void** val, uint64_t* len) {
+  if (tDecodeU64v(pDecoder, len) < 0) return -1;
+
+  if (TD_CODER_CHECK_CAPACITY_FAILED(pDecoder, *len)) return -1;
+  *val = malloc(*len);
+  if (*val == NULL) return -1;
+  memcpy(*val, TD_CODER_CURRENT(pDecoder), *len);
+
+  TD_CODER_MOVE_POS(pDecoder, *len);
+  return 0;
+}
+
+static FORCE_INLINE int32_t tDecodeCStrAndLenAlloc(SCoder* pDecoder, char** val, uint64_t* len) {
+  if (tDecodeBinaryAlloc(pDecoder, (void**)val, len) < 0) return -1;
+  (*len) -= 1;
+  return 0;
+}
+
+static FORCE_INLINE int32_t tDecodeCStrAlloc(SCoder* pDecoder, char** val) {
+  uint64_t len;
+  return tDecodeCStrAndLenAlloc(pDecoder, val, &len);
+}
+
 static FORCE_INLINE bool tDecodeIsEnd(SCoder* pCoder) { return (pCoder->size == pCoder->pos); }
 
 #ifdef __cplusplus
 }
 #endif
 
-#endif /*_TD_UTIL_ENCODE_H_*/
\ No newline at end of file
+#endif /*_TD_UTIL_ENCODE_H_*/
diff --git a/source/common/src/tmsg.c b/source/common/src/tmsg.c
index 469090c05b..794e5a8542 100644
--- a/source/common/src/tmsg.c
+++ b/source/common/src/tmsg.c
@@ -2674,9 +2674,9 @@ int32_t tDeserializeSCMCreateStreamReq(void *buf, int32_t bufLen, SCMCreateStrea
   if (tStartDecode(&decoder) < 0) return -1;
   if (tDecodeCStrTo(&decoder, pReq->name) < 0) return -1;
   if (tDecodeI8(&decoder, &pReq->igExists) < 0) return -1;
-  if (tDecodeCStr(&decoder, (const char **)&pReq->sql) < 0) return -1;
-  if (tDecodeCStr(&decoder, (const char **)&pReq->physicalPlan) < 0) return -1;
-  if (tDecodeCStr(&decoder, (const char **)&pReq->logicalPlan) < 0) return -1;
+  if (tDecodeCStrAlloc(&decoder, &pReq->sql) < 0) return -1;
+  if (tDecodeCStrAlloc(&decoder, &pReq->physicalPlan) < 0) return -1;
+  if (tDecodeCStrAlloc(&decoder, &pReq->logicalPlan) < 0) return -1;
   tEndDecode(&decoder);
 
   tCoderClear(&decoder);
@@ -2706,7 +2706,7 @@ int32_t tDecodeSStreamTask(SCoder *pDecoder, SStreamTask *pTask) {
   if (tDecodeI32(pDecoder, &pTask->taskId) < 0) return -1;
   if (tDecodeI32(pDecoder, &pTask->level) < 0) return -1;
   if (tDecodeI8(pDecoder, &pTask->status) < 0) return -1;
-  if (tDecodeCStr(pDecoder, (const char **)&pTask->qmsg) < 0) return -1;
+  if (tDecodeCStrAlloc(pDecoder, &pTask->qmsg) < 0) return -1;
   tEndDecode(pDecoder);
   return 0;
 }
diff --git a/source/dnode/mnode/impl/src/mndDef.c b/source/dnode/mnode/impl/src/mndDef.c
index 6e8d9aa79f..cc5bf843ce 100644
--- a/source/dnode/mnode/impl/src/mndDef.c
+++ b/source/dnode/mnode/impl/src/mndDef.c
@@ -39,8 +39,8 @@ int32_t tDecodeSStreamObj(SCoder *pDecoder, SStreamObj *pObj) {
   if (tDecodeI64(pDecoder, &pObj->dbUid) < 0) return -1;
   if (tDecodeI32(pDecoder, &pObj->version) < 0) return -1;
   if (tDecodeI8(pDecoder, &pObj->status) < 0) return -1;
-  if (tDecodeCStr(pDecoder, (const char **)&pObj->sql) < 0) return -1;
-  if (tDecodeCStr(pDecoder, (const char **)&pObj->logicalPlan) < 0) return -1;
-  if (tDecodeCStr(pDecoder, (const char **)&pObj->physicalPlan) < 0) return -1;
+  if (tDecodeCStrAlloc(pDecoder, &pObj->sql) < 0) return -1;
+  if (tDecodeCStrAlloc(pDecoder, &pObj->logicalPlan) < 0) return -1;
+  if (tDecodeCStrAlloc(pDecoder, &pObj->physicalPlan) < 0) return -1;
   return 0;
 }
diff --git a/source/dnode/snode/inc/sndInt.h b/source/dnode/snode/inc/sndInt.h
index e5f6c3c266..d1122fc4ec 100644
--- a/source/dnode/snode/inc/sndInt.h
+++ b/source/dnode/snode/inc/sndInt.h
@@ -50,8 +50,9 @@ typedef struct SSnode {
 SStreamMeta* sndMetaNew();
 void         sndMetaDelete(SStreamMeta* pMeta);
 
-int32_t sndMetaDeployTask(SStreamMeta* pMeta, SStreamTask* pTask);
-int32_t sndMetaRemoveTask(SStreamMeta* pMeta, int32_t taskId);
+int32_t      sndMetaDeployTask(SStreamMeta* pMeta, SStreamTask* pTask);
+SStreamTask* sndMetaGetTask(SStreamMeta* pMeta, int32_t taskId);
+int32_t      sndMetaRemoveTask(SStreamMeta* pMeta, int32_t taskId);
 
 int32_t sndDropTaskOfStream(SStreamMeta* pMeta, int64_t streamId);
 
diff --git a/source/dnode/snode/src/snode.c b/source/dnode/snode/src/snode.c
index 80e33bd971..2ecaeb00e9 100644
--- a/source/dnode/snode/src/snode.c
+++ b/source/dnode/snode/src/snode.c
@@ -68,6 +68,10 @@ int32_t sndMetaDeployTask(SStreamMeta *pMeta, SStreamTask *pTask) {
   return taosHashPut(pMeta->pHash, &pTask->taskId, sizeof(int32_t), pTask, sizeof(void *));
 }
 
+SStreamTask *sndMetaGetTask(SStreamMeta *pMeta, int32_t taskId) {
+  return taosHashGet(pMeta->pHash, &taskId, sizeof(int32_t));
+}
+
 int32_t sndMetaRemoveTask(SStreamMeta *pMeta, int32_t taskId) {
   SStreamTask *pTask = taosHashGet(pMeta->pHash, &taskId, sizeof(int32_t));
   if (pTask == NULL) {
@@ -79,6 +83,16 @@ int32_t sndMetaRemoveTask(SStreamMeta *pMeta, int32_t taskId) {
   return taosHashRemove(pMeta->pHash, &taskId, sizeof(int32_t));
 }
 
+static int32_t sndProcessTaskExecReq(SSnode *pSnode, SRpcMsg *pMsg) {
+  SMsgHead    *pHead = pMsg->pCont;
+  int32_t      taskId = pHead->streamTaskId;
+  SStreamTask *pTask = sndMetaGetTask(pSnode->pMeta, taskId);
+  if (pTask == NULL) {
+    return -1;
+  }
+  return 0;
+}
+
 int32_t sndProcessUMsg(SSnode *pSnode, SRpcMsg *pMsg) {
   // stream deploy
   // stream stop/resume
@@ -95,13 +109,20 @@ int32_t sndProcessUMsg(SSnode *pSnode, SRpcMsg *pMsg) {
     tCoderClear(&decoder);
 
     sndMetaDeployTask(pSnode->pMeta, pTask);
+  } else if (pMsg->msgType == TDMT_SND_TASK_EXEC) {
+    sndProcessTaskExecReq(pSnode, pMsg);
   } else {
-    //
+    ASSERT(0);
   }
   return 0;
 }
 
 int32_t sndProcessSMsg(SSnode *pSnode, SRpcMsg *pMsg) {
   // operator exec
+  if (pMsg->msgType == TDMT_SND_TASK_EXEC) {
+    sndProcessTaskExecReq(pSnode, pMsg);
+  } else {
+    ASSERT(0);
+  }
   return 0;
 }