diff --git a/include/libs/planner/planner.h b/include/libs/planner/planner.h
index 05caa7a7bb..e03ac3811a 100644
--- a/include/libs/planner/planner.h
+++ b/include/libs/planner/planner.h
@@ -52,10 +52,14 @@ int32_t qSetSubplanExecutionNode(SSubplan* pSubplan, int32_t groupId, SDownstrea
 
 void qClearSubplanExecutionNode(SSubplan* pSubplan);
 
-// Convert to subplan to string for the scheduler to send to the executor
+// Convert to subplan to display string for the scheduler to send to the executor
 int32_t qSubPlanToString(const SSubplan* pSubplan, char** pStr, int32_t* pLen);
 int32_t qStringToSubplan(const char* pStr, SSubplan** pSubplan);
 
+// Convert to subplan to msg for the scheduler to send to the executor
+int32_t qSubPlanToMsg(const SSubplan* pSubplan, char** pStr, int32_t* pLen);
+int32_t qMsgToSubplan(const char* pStr, int32_t len, SSubplan** pSubplan);
+
 char*       qQueryPlanToString(const SQueryPlan* pPlan);
 SQueryPlan* qStringToQueryPlan(const char* pStr);
 
diff --git a/source/libs/nodes/src/nodesMsgFuncs.c b/source/libs/nodes/src/nodesMsgFuncs.c
index 5fe31ed78e..b0be001e56 100644
--- a/source/libs/nodes/src/nodesMsgFuncs.c
+++ b/source/libs/nodes/src/nodesMsgFuncs.c
@@ -1082,6 +1082,170 @@ static int32_t msgToSlotDescNode(STlvDecoder* pDecoder, void* pObj) {
   return code;
 }
 
+enum { EP_CODE_FQDN = 1, EP_CODE_port };
+
+static int32_t epToMsg(const void* pObj, STlvEncoder* pEncoder) {
+  const SEp* pNode = (const SEp*)pObj;
+
+  int32_t code = tlvEncodeCStr(pEncoder, EP_CODE_FQDN, pNode->fqdn);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeU16(pEncoder, EP_CODE_port, pNode->port);
+  }
+
+  return code;
+}
+
+static int32_t msgToEp(STlvDecoder* pDecoder, void* pObj) {
+  SEp* pNode = (SEp*)pObj;
+
+  int32_t code = TSDB_CODE_SUCCESS;
+  STlv*   pTlv = NULL;
+  tlvForEach(pDecoder, pTlv, code) {
+    switch (pTlv->type) {
+      case EP_CODE_FQDN:
+        code = tlvDecodeCStr(pTlv, pNode->fqdn);
+        break;
+      case EP_CODE_port:
+        code = tlvDecodeU16(pTlv, &pNode->port);
+        break;
+      default:
+        break;
+    }
+  }
+
+  return code;
+}
+
+enum { EP_SET_CODE_IN_USE = 1, EP_SET_CODE_NUM_OF_EPS, EP_SET_CODE_EPS };
+
+static int32_t epSetToMsg(const void* pObj, STlvEncoder* pEncoder) {
+  const SEpSet* pNode = (const SEpSet*)pObj;
+
+  int32_t code = tlvEncodeI8(pEncoder, EP_SET_CODE_IN_USE, pNode->inUse);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI8(pEncoder, EP_SET_CODE_NUM_OF_EPS, pNode->numOfEps);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeObjArray(pEncoder, EP_SET_CODE_EPS, epToMsg, pNode->eps, sizeof(SEp), pNode->numOfEps);
+  }
+
+  return code;
+}
+
+static int32_t msgToEpSet(STlvDecoder* pDecoder, void* pObj) {
+  SEpSet* pNode = (SEpSet*)pObj;
+
+  int32_t code = TSDB_CODE_SUCCESS;
+  STlv*   pTlv = NULL;
+  tlvForEach(pDecoder, pTlv, code) {
+    switch (pTlv->type) {
+      case EP_SET_CODE_IN_USE:
+        code = tlvDecodeI8(pTlv, &pNode->inUse);
+        break;
+      case EP_SET_CODE_NUM_OF_EPS:
+        code = tlvDecodeI8(pTlv, &pNode->numOfEps);
+        break;
+      case EP_SET_CODE_EPS:
+        code = tlvDecodeObjArrayFromTlv(pTlv, msgToEp, pNode->eps, sizeof(SEp));
+        break;
+      default:
+        break;
+    }
+  }
+
+  return code;
+}
+
+enum { QUERY_NODE_ADDR_CODE_NODE_ID = 1, QUERY_NODE_ADDR_CODE_EP_SET };
+
+static int32_t queryNodeAddrToMsg(const void* pObj, STlvEncoder* pEncoder) {
+  const SQueryNodeAddr* pNode = (const SQueryNodeAddr*)pObj;
+
+  int32_t code = tlvEncodeI32(pEncoder, QUERY_NODE_ADDR_CODE_NODE_ID, pNode->nodeId);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeObj(pEncoder, QUERY_NODE_ADDR_CODE_EP_SET, epSetToMsg, &pNode->epSet);
+  }
+
+  return code;
+}
+
+static int32_t msgToQueryNodeAddr(STlvDecoder* pDecoder, void* pObj) {
+  SQueryNodeAddr* pNode = (SQueryNodeAddr*)pObj;
+
+  int32_t code = TSDB_CODE_SUCCESS;
+  STlv*   pTlv = NULL;
+  tlvForEach(pDecoder, pTlv, code) {
+    switch (pTlv->type) {
+      case QUERY_NODE_ADDR_CODE_NODE_ID:
+        code = tlvDecodeI32(pTlv, &pNode->nodeId);
+        break;
+      case QUERY_NODE_ADDR_CODE_EP_SET:
+        code = tlvDecodeObjFromTlv(pTlv, msgToEpSet, &pNode->epSet);
+        break;
+    }
+  }
+
+  return code;
+}
+
+enum {
+  DOWNSTREAM_SOURCE_CODE_ADDR = 1,
+  DOWNSTREAM_SOURCE_CODE_TASK_ID,
+  DOWNSTREAM_SOURCE_CODE_SCHED_ID,
+  DOWNSTREAM_SOURCE_CODE_EXEC_ID,
+  DOWNSTREAM_SOURCE_CODE_FETCH_MSG_TYPE
+};
+
+static int32_t downstreamSourceNodeToMsg(const void* pObj, STlvEncoder* pEncoder) {
+  const SDownstreamSourceNode* pNode = (const SDownstreamSourceNode*)pObj;
+
+  int32_t code = tlvEncodeObj(pEncoder, DOWNSTREAM_SOURCE_CODE_ADDR, queryNodeAddrToMsg, &pNode->addr);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeU64(pEncoder, DOWNSTREAM_SOURCE_CODE_TASK_ID, pNode->taskId);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeU64(pEncoder, DOWNSTREAM_SOURCE_CODE_SCHED_ID, pNode->schedId);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI32(pEncoder, DOWNSTREAM_SOURCE_CODE_EXEC_ID, pNode->execId);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI32(pEncoder, DOWNSTREAM_SOURCE_CODE_FETCH_MSG_TYPE, pNode->fetchMsgType);
+  }
+
+  return code;
+}
+
+static int32_t msgToDownstreamSourceNode(STlvDecoder* pDecoder, void* pObj) {
+  SDownstreamSourceNode* pNode = (SDownstreamSourceNode*)pObj;
+
+  int32_t code = TSDB_CODE_SUCCESS;
+  STlv*   pTlv = NULL;
+  tlvForEach(pDecoder, pTlv, code) {
+    switch (pTlv->type) {
+      case DOWNSTREAM_SOURCE_CODE_ADDR:
+        code = tlvDecodeObjFromTlv(pTlv, msgToQueryNodeAddr, &pNode->addr);
+        break;
+      case DOWNSTREAM_SOURCE_CODE_TASK_ID:
+        code = tlvDecodeU64(pTlv, &pNode->taskId);
+        break;
+      case DOWNSTREAM_SOURCE_CODE_SCHED_ID:
+        code = tlvDecodeU64(pTlv, &pNode->schedId);
+        break;
+      case DOWNSTREAM_SOURCE_CODE_EXEC_ID:
+        code = tlvDecodeI32(pTlv, &pNode->execId);
+        break;
+      case DOWNSTREAM_SOURCE_CODE_FETCH_MSG_TYPE:
+        code = tlvDecodeI32(pTlv, &pNode->fetchMsgType);
+        break;
+      default:
+        break;
+    }
+  }
+
+  return code;
+}
+
 enum {
   PHY_NODE_CODE_OUTPUT_DESC = 1,
   PHY_NODE_CODE_CONDITIONS,
@@ -1401,80 +1565,6 @@ static int32_t msgToPhysiTableScanNode(STlvDecoder* pDecoder, void* pObj) {
   return code;
 }
 
-enum { EP_CODE_FQDN = 1, EP_CODE_port };
-
-static int32_t epToMsg(const void* pObj, STlvEncoder* pEncoder) {
-  const SEp* pNode = (const SEp*)pObj;
-
-  int32_t code = tlvEncodeCStr(pEncoder, EP_CODE_FQDN, pNode->fqdn);
-  if (TSDB_CODE_SUCCESS == code) {
-    code = tlvEncodeU16(pEncoder, EP_CODE_port, pNode->port);
-  }
-
-  return code;
-}
-
-static int32_t msgToEp(STlvDecoder* pDecoder, void* pObj) {
-  SEp* pNode = (SEp*)pObj;
-
-  int32_t code = TSDB_CODE_SUCCESS;
-  STlv*   pTlv = NULL;
-  tlvForEach(pDecoder, pTlv, code) {
-    switch (pTlv->type) {
-      case EP_CODE_FQDN:
-        code = tlvDecodeCStr(pTlv, pNode->fqdn);
-        break;
-      case EP_CODE_port:
-        code = tlvDecodeU16(pTlv, &pNode->port);
-        break;
-      default:
-        break;
-    }
-  }
-
-  return code;
-}
-
-enum { EP_SET_CODE_IN_USE = 1, EP_SET_CODE_NUM_OF_EPS, EP_SET_CODE_EPS };
-
-static int32_t epSetToMsg(const void* pObj, STlvEncoder* pEncoder) {
-  const SEpSet* pNode = (const SEpSet*)pObj;
-
-  int32_t code = tlvEncodeI8(pEncoder, EP_SET_CODE_IN_USE, pNode->inUse);
-  if (TSDB_CODE_SUCCESS == code) {
-    code = tlvEncodeI8(pEncoder, EP_SET_CODE_NUM_OF_EPS, pNode->numOfEps);
-  }
-  if (TSDB_CODE_SUCCESS == code) {
-    code = tlvEncodeObjArray(pEncoder, EP_SET_CODE_EPS, epToMsg, pNode->eps, sizeof(SEp), pNode->numOfEps);
-  }
-
-  return code;
-}
-
-static int32_t msgToEpSet(STlvDecoder* pDecoder, void* pObj) {
-  SEpSet* pNode = (SEpSet*)pObj;
-
-  int32_t code = TSDB_CODE_SUCCESS;
-  STlv*   pTlv = NULL;
-  tlvForEach(pDecoder, pTlv, code) {
-    switch (pTlv->type) {
-      case EP_SET_CODE_IN_USE:
-        code = tlvDecodeI8(pTlv, &pNode->inUse);
-        break;
-      case EP_SET_CODE_NUM_OF_EPS:
-        code = tlvDecodeI8(pTlv, &pNode->numOfEps);
-        break;
-      case EP_SET_CODE_EPS:
-        code = tlvDecodeObjArrayFromTlv(pTlv, msgToEp, pNode->eps, sizeof(SEp));
-        break;
-      default:
-        break;
-    }
-  }
-
-  return code;
-}
-
 enum {
   PHY_SYSTABLE_SCAN_CODE_SCAN = 1,
   PHY_SYSTABLE_SCAN_CODE_MGMT_EP_SET,
@@ -2594,38 +2684,6 @@ static int32_t msgToSubplanId(STlvDecoder* pDecoder, void* pObj) {
   return code;
 }
 
-enum { QUERY_NODE_ADDR_CODE_NODE_ID = 1, QUERY_NODE_ADDR_CODE_EP_SET };
-
-static int32_t queryNodeAddrToMsg(const void* pObj, STlvEncoder* pEncoder) {
-  const SQueryNodeAddr* pNode = (const SQueryNodeAddr*)pObj;
-
-  int32_t code = tlvEncodeI32(pEncoder, QUERY_NODE_ADDR_CODE_NODE_ID, pNode->nodeId);
-  if (TSDB_CODE_SUCCESS == code) {
-    code = tlvEncodeObj(pEncoder, QUERY_NODE_ADDR_CODE_EP_SET, epSetToMsg, &pNode->epSet);
-  }
-
-  return code;
-}
-
-static int32_t msgToQueryNodeAddr(STlvDecoder* pDecoder, void* pObj) {
-  SQueryNodeAddr* pNode = (SQueryNodeAddr*)pObj;
-
-  int32_t code = TSDB_CODE_SUCCESS;
-  STlv*   pTlv = NULL;
-  tlvForEach(pDecoder, pTlv, code) {
-    switch (pTlv->type) {
-      case QUERY_NODE_ADDR_CODE_NODE_ID:
-        code = tlvDecodeI32(pTlv, &pNode->nodeId);
-        break;
-      case QUERY_NODE_ADDR_CODE_EP_SET:
-        code = tlvDecodeObjFromTlv(pTlv, msgToEpSet, &pNode->epSet);
-        break;
-    }
-  }
-
-  return code;
-}
-
 enum {
   SUBPLAN_CODE_SUBPLAN_ID = 1,
   SUBPLAN_CODE_SUBPLAN_TYPE,
@@ -2802,6 +2860,8 @@ static int32_t specificNodeToMsg(const void* pObj, STlvEncoder* pEncoder) {
     case QUERY_NODE_SLOT_DESC:
       code = slotDescNodeToMsg(pObj, pEncoder);
       break;
+    case QUERY_NODE_DOWNSTREAM_SOURCE:
+      return downstreamSourceNodeToMsg(pObj, pEncoder);
     case QUERY_NODE_LEFT_VALUE:
       break;
     case QUERY_NODE_PHYSICAL_PLAN_TAG_SCAN:
@@ -2929,6 +2989,8 @@ static int32_t msgToSpecificNode(STlvDecoder* pDecoder, void* pObj) {
     case QUERY_NODE_SLOT_DESC:
       code = msgToSlotDescNode(pDecoder, pObj);
       break;
+    case QUERY_NODE_DOWNSTREAM_SOURCE:
+      return msgToDownstreamSourceNode(pDecoder, pObj);
     case QUERY_NODE_LEFT_VALUE:
       break;
     case QUERY_NODE_PHYSICAL_PLAN_TAG_SCAN:
diff --git a/source/libs/planner/src/planner.c b/source/libs/planner/src/planner.c
index baa1d1074c..35903d45b1 100644
--- a/source/libs/planner/src/planner.c
+++ b/source/libs/planner/src/planner.c
@@ -123,6 +123,21 @@ int32_t qSubPlanToString(const SSubplan* pSubplan, char** pStr, int32_t* pLen) {
 
 int32_t qStringToSubplan(const char* pStr, SSubplan** pSubplan) { return nodesStringToNode(pStr, (SNode**)pSubplan); }
 
+int32_t qSubPlanToMsg(const SSubplan* pSubplan, char** pStr, int32_t* pLen) {
+  if (SUBPLAN_TYPE_MODIFY == pSubplan->subplanType && NULL == pSubplan->pNode) {
+    SDataInserterNode* insert = (SDataInserterNode*)pSubplan->pDataSink;
+    *pLen = insert->size;
+    *pStr = insert->pData;
+    insert->pData = NULL;
+    return TSDB_CODE_SUCCESS;
+  }
+  return nodesNodeToMsg((const SNode*)pSubplan, pStr, pLen);
+}
+
+int32_t qMsgToSubplan(const char* pStr, int32_t len, SSubplan** pSubplan) {
+  return nodesMsgToNode(pStr, len, (SNode**)pSubplan);
+}
+
 char* qQueryPlanToString(const SQueryPlan* pPlan) {
   char*   pStr = NULL;
   int32_t len = 0;
diff --git a/source/libs/qworker/src/qworker.c b/source/libs/qworker/src/qworker.c
index f006096ce2..61c38f59db 100644
--- a/source/libs/qworker/src/qworker.c
+++ b/source/libs/qworker/src/qworker.c
@@ -559,7 +559,7 @@ int32_t qwProcessQuery(QW_FPARAMS_DEF, SQWMsg *qwMsg, char *sql) {
 
   // QW_TASK_DLOGL("subplan json string, len:%d, %s", qwMsg->msgLen, qwMsg->msg);
 
-  code = qStringToSubplan(qwMsg->msg, &plan);
+  code = qMsgToSubplan(qwMsg->msg, qwMsg->msgLen, &plan);
   if (TSDB_CODE_SUCCESS != code) {
     code = TSDB_CODE_INVALID_MSG;
     QW_TASK_ELOG("task physical plan to subplan failed, code:%x - %s", code, tstrerror(code));
@@ -968,7 +968,7 @@ int32_t qwProcessDelete(QW_FPARAMS_DEF, SQWMsg *qwMsg, SDeleteRes *pRes) {
   DataSinkHandle sinkHandle = NULL;
   SQWTaskCtx     ctx = {0};
 
-  code = qStringToSubplan(qwMsg->msg, &plan);
+  code = qMsgToSubplan(qwMsg->msg, qwMsg->msgLen, &plan);
   if (TSDB_CODE_SUCCESS != code) {
     code = TSDB_CODE_INVALID_MSG;
     QW_TASK_ELOG("task physical plan to subplan failed, code:%x - %s", code, tstrerror(code));
diff --git a/source/libs/scheduler/src/schTask.c b/source/libs/scheduler/src/schTask.c
index c5f161b66a..969c6fc8a6 100644
--- a/source/libs/scheduler/src/schTask.c
+++ b/source/libs/scheduler/src/schTask.c
@@ -860,7 +860,7 @@ int32_t schLaunchTaskImpl(void *param) {
   SSubplan *plan = pTask->plan;
 
   if (NULL == pTask->msg) {  // TODO add more detailed reason for failure
-    code = qSubPlanToString(plan, &pTask->msg, &pTask->msgLen);
+    code = qSubPlanToMsg(plan, &pTask->msg, &pTask->msgLen);
     if (TSDB_CODE_SUCCESS != code) {
       SCH_TASK_ELOG("failed to create physical plan, code:%s, msg:%p, len:%d", tstrerror(code), pTask->msg,
                     pTask->msgLen);