diff --git a/source/libs/executor/inc/executorInt.h b/source/libs/executor/inc/executorInt.h
index 143859111b1c2ef50f3b7e170629d8a4123bf736..401b532a69b9e53a0c13a11565376c6486d5bfc8 100644
--- a/source/libs/executor/inc/executorInt.h
+++ b/source/libs/executor/inc/executorInt.h
@@ -48,6 +48,14 @@ typedef int32_t (*__block_search_fn_t)(char* data, int32_t num, int64_t key, int
 typedef struct STsdbReader STsdbReader;
 typedef struct STqReader  STqReader;
 
+
+typedef enum SOperatorParamType{
+  OP_GET_PARAM = 1,
+  OP_NOTIFY_PARAM
+} SOperatorParamType;
+
+
+
 #define IS_VALID_SESSION_WIN(winInfo)        ((winInfo).sessionWin.win.skey > 0)
 #define SET_SESSION_WIN_INVALID(winInfo)     ((winInfo).sessionWin.win.skey = INT64_MIN)
 #define IS_INVALID_SESSION_WIN_KEY(winKey)   ((winKey).win.skey <= 0)
@@ -741,6 +749,11 @@ void streamOpReloadState(struct SOperatorInfo* pOperator);
 void destroyOperatorParamValue(void* pValues);
 int32_t mergeOperatorParams(SOperatorParam* pDst, SOperatorParam* pSrc);
 int32_t buildTableScanOperatorParam(SOperatorParam** ppRes, SArray* pUidList, int32_t srcOpType, bool tableSeq);
+void freeExchangeGetBasicOperatorParam(void* pParam);
+void freeOperatorParam(SOperatorParam* pParam, SOperatorParamType type);
+void freeResetOperatorParams(struct SOperatorInfo* pOperator, SOperatorParamType type, bool allFree);
+SSDataBlock* getNextBlockFromDownstreamImpl(struct SOperatorInfo* pOperator, int32_t idx, bool clearParam);
+
 
 #ifdef __cplusplus
 }
diff --git a/source/libs/executor/inc/groupcache.h b/source/libs/executor/inc/groupcache.h
index d86388a0b4345f1a87f7aa0ce0654236bce06053..ef2730086b9cd8a0b89ab57d167ef41d10b46766 100755
--- a/source/libs/executor/inc/groupcache.h
+++ b/source/libs/executor/inc/groupcache.h
@@ -56,7 +56,7 @@ typedef struct SGcDownstreamCtx {
   SRWLatch        grpLock;
   int64_t         fetchSessionId;
   SArray*         pNewGrpList; // SArray<SGcNewGroupInfo>
-  SSHashObj*      pVgTbHash;
+  SSHashObj*      pVgTbHash;   // SHash<SGcVgroupCtx>
   SHashObj*       pGrpHash;
   SRWLatch        blkLock;
   SSDataBlock*    pBaseBlock;
@@ -136,7 +136,6 @@ typedef struct SGcBlkBufInfo {
 } SGcBlkBufInfo;
 
 typedef struct SGcExecInfo {
-  int32_t  downstreamNum;
   int64_t* pDownstreamBlkNum;
 } SGcExecInfo;
 
@@ -157,13 +156,13 @@ typedef struct SGcBlkCacheInfo {
 } SGcBlkCacheInfo;
 
 typedef struct SGroupCacheOperatorInfo {
-  TdThreadMutex     sessionMutex;
   int64_t           maxCacheSize;
   int64_t           currentBlkId;
   SGroupColsInfo    groupColsInfo;
   bool              globalGrp;
   bool              grpByUid;
   bool              batchFetch;
+  int32_t           downstreamNum;
   SGcDownstreamCtx* pDownstreams;
   SGcBlkCacheInfo   blkCache;
   SHashObj*         pGrpHash;  
diff --git a/source/libs/executor/inc/operator.h b/source/libs/executor/inc/operator.h
index 8b13d4d222df5b603aec31115035949c6a8f6f0a..9a07a643a54c62da6d8bab81917cc5c87f63f5a4 100644
--- a/source/libs/executor/inc/operator.h
+++ b/source/libs/executor/inc/operator.h
@@ -20,11 +20,6 @@
 extern "C" {
 #endif
 
-typedef enum SOperatorParamType{
-  OP_GET_PARAM = 1,
-  OP_NOTIFY_PARAM
-} SOperatorParamType;
-
 typedef struct SOperatorCostInfo {
   double openCost;
   double totalCost;
@@ -180,7 +175,7 @@ int32_t        optrDefaultBufFn(SOperatorInfo* pOperator);
 SSDataBlock*   optrDefaultGetNextExtFn(struct SOperatorInfo* pOperator, SOperatorParam* pParam);
 int32_t        optrDefaultNotifyFn(struct SOperatorInfo* pOperator, SOperatorParam* pParam);
 SSDataBlock*   getNextBlockFromDownstream(struct SOperatorInfo* pOperator, int32_t idx);
-SSDataBlock*   getNextBlockFromDownstreamOnce(struct SOperatorInfo* pOperator, int32_t idx);
+SSDataBlock*   getNextBlockFromDownstreamRemain(struct SOperatorInfo* pOperator, int32_t idx);
 int16_t        getOperatorResultBlockId(struct SOperatorInfo* pOperator, int32_t idx);
 
 SOperatorInfo* createOperator(SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo, SReadHandle* pHandle, SNode* pTagCond,
diff --git a/source/libs/executor/src/dynqueryctrloperator.c b/source/libs/executor/src/dynqueryctrloperator.c
index 404b0201e47a83655bd3a5a90a58b86917ff5fc8..fa332222dd003d7e4bee008b4861059f638fb982 100755
--- a/source/libs/executor/src/dynqueryctrloperator.c
+++ b/source/libs/executor/src/dynqueryctrloperator.c
@@ -33,38 +33,122 @@ void freeVgTableList(void* ptr) {
   taosArrayDestroy(*(SArray**)ptr); 
 }
 
+static void destroyStbJoinTableList(SStbJoinTableList* pListHead) {
+  SStbJoinTableList* pNext = NULL;
+  
+  while (pListHead) {
+    taosMemoryFree(pListHead->pLeftVg);
+    taosMemoryFree(pListHead->pLeftUid);
+    taosMemoryFree(pListHead->pRightVg);
+    taosMemoryFree(pListHead->pRightUid);
+    pNext = pListHead->pNext;
+    taosMemoryFree(pListHead);
+    pListHead = pNext;
+  }
+}
 
-static void destroyDynQueryCtrlOperator(void* param) {
-  SDynQueryCtrlOperatorInfo* pDyn = (SDynQueryCtrlOperatorInfo*)param;
+static void destroyStbJoinDynCtrlInfo(SStbJoinDynCtrlInfo* pStbJoin) {
   qError("dynQueryCtrl exec info, prevBlk:%" PRId64 ", prevRows:%" PRId64 ", postBlk:%" PRId64 ", postRows:%" PRId64 ", leftCacheNum:%" PRId64 ", rightCacheNum:%" PRId64, 
-         pDyn->stbJoin.execInfo.prevBlkNum, pDyn->stbJoin.execInfo.prevBlkRows, pDyn->stbJoin.execInfo.postBlkNum, 
-         pDyn->stbJoin.execInfo.postBlkRows, pDyn->stbJoin.execInfo.leftCacheNum, pDyn->stbJoin.execInfo.rightCacheNum);
+         pStbJoin->execInfo.prevBlkNum, pStbJoin->execInfo.prevBlkRows, pStbJoin->execInfo.postBlkNum, 
+         pStbJoin->execInfo.postBlkRows, pStbJoin->execInfo.leftCacheNum, pStbJoin->execInfo.rightCacheNum);
 
-  if (pDyn->stbJoin.basic.batchFetch) {
-    if (pDyn->stbJoin.ctx.prev.leftHash) {
-      tSimpleHashSetFreeFp(pDyn->stbJoin.ctx.prev.leftHash, freeVgTableList);
-      tSimpleHashCleanup(pDyn->stbJoin.ctx.prev.leftHash);
+  if (pStbJoin->basic.batchFetch) {
+    if (pStbJoin->ctx.prev.leftHash) {
+      tSimpleHashSetFreeFp(pStbJoin->ctx.prev.leftHash, freeVgTableList);
+      tSimpleHashCleanup(pStbJoin->ctx.prev.leftHash);
     }
-    if (pDyn->stbJoin.ctx.prev.rightHash) {
-      tSimpleHashSetFreeFp(pDyn->stbJoin.ctx.prev.rightHash, freeVgTableList);
-      tSimpleHashCleanup(pDyn->stbJoin.ctx.prev.rightHash);
+    if (pStbJoin->ctx.prev.rightHash) {
+      tSimpleHashSetFreeFp(pStbJoin->ctx.prev.rightHash, freeVgTableList);
+      tSimpleHashCleanup(pStbJoin->ctx.prev.rightHash);
     }
   } else {
-    if (pDyn->stbJoin.ctx.prev.leftCache) {
-      tSimpleHashCleanup(pDyn->stbJoin.ctx.prev.leftCache);
+    if (pStbJoin->ctx.prev.leftCache) {
+      tSimpleHashCleanup(pStbJoin->ctx.prev.leftCache);
     }
-    if (pDyn->stbJoin.ctx.prev.rightCache) {
-      tSimpleHashCleanup(pDyn->stbJoin.ctx.prev.rightCache);
+    if (pStbJoin->ctx.prev.rightCache) {
+      tSimpleHashCleanup(pStbJoin->ctx.prev.rightCache);
     }
-    if (pDyn->stbJoin.ctx.prev.onceTable) {
-      tSimpleHashCleanup(pDyn->stbJoin.ctx.prev.onceTable);
+    if (pStbJoin->ctx.prev.onceTable) {
+      tSimpleHashCleanup(pStbJoin->ctx.prev.onceTable);
     }
   }
 
+  destroyStbJoinTableList(pStbJoin->ctx.prev.pListHead);
+}
+
+static void destroyDynQueryCtrlOperator(void* param) {
+  SDynQueryCtrlOperatorInfo* pDyn = (SDynQueryCtrlOperatorInfo*)param;
+
+  switch (pDyn->qType) {
+    case DYN_QTYPE_STB_HASH:
+      destroyStbJoinDynCtrlInfo(&pDyn->stbJoin);
+      break;
+    default:
+      qError("unsupported dynamic query ctrl type: %d", pDyn->qType);
+      break;
+  }
+
   taosMemoryFreeClear(param);
 }
 
-static FORCE_INLINE int32_t buildGroupCacheOperatorParam(SOperatorParam** ppRes, int32_t downstreamIdx, int32_t vgId, int64_t tbUid, bool needCache, SOperatorParam* pChild) {
+static FORCE_INLINE bool tableNeedCache(int64_t uid, SStbJoinPrevJoinCtx* pPrev, SStbJoinPostJoinCtx* pPost, bool rightTable, bool batchFetch) {
+  if (batchFetch) {
+    return true;
+  }
+  
+  if (rightTable) {
+    return pPost->rightCurrUid == pPost->rightNextUid;
+  }
+
+  uint32_t* num = tSimpleHashGet(pPrev->leftCache, &uid, sizeof(uid));
+
+  return (NULL == num) ? false : true;
+}
+
+static void updatePostJoinCurrTableInfo(SStbJoinDynCtrlInfo*          pStbJoin) {
+  SStbJoinPrevJoinCtx*       pPrev = &pStbJoin->ctx.prev;
+  SStbJoinPostJoinCtx*       pPost = &pStbJoin->ctx.post;
+  SStbJoinTableList*         pNode = pPrev->pListHead;
+  int32_t*                   leftVgId = pNode->pLeftVg + pNode->readIdx;
+  int32_t*                   rightVgId = pNode->pRightVg + pNode->readIdx;
+  int64_t*                   leftUid = pNode->pLeftUid + pNode->readIdx;
+  int64_t*                   rightUid = pNode->pRightUid + pNode->readIdx;
+  int64_t                    readIdx = pNode->readIdx + 1;
+  int64_t                    rightPrevUid = pPost->rightCurrUid;
+
+  pPost->leftCurrUid = *leftUid;
+  pPost->rightCurrUid = *rightUid;
+
+  pPost->leftVgId = *leftVgId;
+  pPost->rightVgId = *rightVgId;
+
+  while (true) {
+    if (readIdx < pNode->uidNum) {
+      pPost->rightNextUid = *(pNode->pRightUid + readIdx);
+      break;
+    }
+    
+    pNode = pNode->pNext;
+    if (NULL == pNode) {
+      pPost->rightNextUid = 0;
+      break;
+    }
+    
+    rightUid = pNode->pRightUid;
+    readIdx = 0;
+  }
+
+  pPost->leftNeedCache = tableNeedCache(*leftUid, pPrev, pPost, false, pStbJoin->basic.batchFetch);
+  pPost->rightNeedCache = tableNeedCache(*rightUid, pPrev, pPost, true, pStbJoin->basic.batchFetch);
+
+  if (pPost->rightNeedCache && rightPrevUid != pPost->rightCurrUid) {
+    tSimpleHashPut(pPrev->rightCache, &pPost->rightCurrUid, sizeof(pPost->rightCurrUid), NULL, 0);
+    pStbJoin->execInfo.rightCacheNum++;
+  }  
+}
+
+
+static int32_t buildGroupCacheOperatorParam(SOperatorParam** ppRes, int32_t downstreamIdx, int32_t vgId, int64_t tbUid, bool needCache, SOperatorParam* pChild) {
   *ppRes = taosMemoryMalloc(sizeof(SOperatorParam));
   if (NULL == *ppRes) {
     return TSDB_CODE_OUT_OF_MEMORY;
@@ -100,7 +184,7 @@ static FORCE_INLINE int32_t buildGroupCacheOperatorParam(SOperatorParam** ppRes,
 }
 
 
-static FORCE_INLINE int32_t buildGroupCacheNotifyOperatorParam(SOperatorParam** ppRes, int32_t downstreamIdx, int32_t vgId, int64_t tbUid) {
+static int32_t buildGroupCacheNotifyOperatorParam(SOperatorParam** ppRes, int32_t downstreamIdx, int32_t vgId, int64_t tbUid) {
   *ppRes = taosMemoryMalloc(sizeof(SOperatorParam));
   if (NULL == *ppRes) {
     return TSDB_CODE_OUT_OF_MEMORY;
@@ -124,7 +208,7 @@ static FORCE_INLINE int32_t buildGroupCacheNotifyOperatorParam(SOperatorParam**
 }
 
 
-static FORCE_INLINE int32_t buildExchangeOperatorParam(SOperatorParam** ppRes, int32_t downstreamIdx, int32_t* pVgId, int64_t* pUid) {
+static int32_t buildExchangeOperatorParam(SOperatorParam** ppRes, int32_t downstreamIdx, int32_t* pVgId, int64_t* pUid) {
   *ppRes = taosMemoryMalloc(sizeof(SOperatorParam));
   if (NULL == *ppRes) {
     return TSDB_CODE_OUT_OF_MEMORY;
@@ -155,7 +239,7 @@ static FORCE_INLINE int32_t buildExchangeOperatorParam(SOperatorParam** ppRes, i
 }
 
 
-static FORCE_INLINE int32_t buildBatchExchangeOperatorParam(SOperatorParam** ppRes, int32_t downstreamIdx, SSHashObj* pVg) {
+static int32_t buildBatchExchangeOperatorParam(SOperatorParam** ppRes, int32_t downstreamIdx, SSHashObj* pVg) {
   *ppRes = taosMemoryMalloc(sizeof(SOperatorParam));
   if (NULL == *ppRes) {
     return TSDB_CODE_OUT_OF_MEMORY;
@@ -173,6 +257,7 @@ static FORCE_INLINE int32_t buildBatchExchangeOperatorParam(SOperatorParam** ppR
     taosMemoryFree(pExc);
     return TSDB_CODE_OUT_OF_MEMORY;
   }
+  tSimpleHashSetFreeFp(pExc->pBatchs, freeExchangeGetBasicOperatorParam);
   
   SExchangeOperatorBasicParam basic;
   basic.srcOpType = QUERY_NODE_PHYSICAL_PLAN_TABLE_SCAN;
@@ -189,6 +274,7 @@ static FORCE_INLINE int32_t buildBatchExchangeOperatorParam(SOperatorParam** ppR
     tSimpleHashPut(pExc->pBatchs, pVgId, sizeof(*pVgId), &basic, sizeof(basic));   
 
     qTrace("build downstreamIdx %d batch scan, vgId:%d, uidNum:%" PRId64, downstreamIdx, *pVgId, (int64_t)taosArrayGetSize(pUidList));
+    *(SArray**)p = NULL;
   }
 
   (*ppRes)->opType = QUERY_NODE_PHYSICAL_PLAN_EXCHANGE;
@@ -199,7 +285,7 @@ static FORCE_INLINE int32_t buildBatchExchangeOperatorParam(SOperatorParam** ppR
 }
 
 
-static FORCE_INLINE int32_t buildMergeJoinOperatorParam(SOperatorParam** ppRes, bool initParam, SOperatorParam* pChild0, SOperatorParam* pChild1) {
+static int32_t buildMergeJoinOperatorParam(SOperatorParam** ppRes, bool initParam, SOperatorParam* pChild0, SOperatorParam* pChild1) {
   *ppRes = taosMemoryMalloc(sizeof(SOperatorParam));
   if (NULL == *ppRes) {
     return TSDB_CODE_OUT_OF_MEMORY;
@@ -229,7 +315,7 @@ static FORCE_INLINE int32_t buildMergeJoinOperatorParam(SOperatorParam** ppRes,
 }
 
 
-static FORCE_INLINE int32_t buildMergeJoinNotifyOperatorParam(SOperatorParam** ppRes, SOperatorParam* pChild0, SOperatorParam* pChild1) {
+static int32_t buildMergeJoinNotifyOperatorParam(SOperatorParam** ppRes, SOperatorParam* pChild0, SOperatorParam* pChild1) {
   *ppRes = taosMemoryMalloc(sizeof(SOperatorParam));
   if (NULL == *ppRes) {
     return TSDB_CODE_OUT_OF_MEMORY;
@@ -251,63 +337,9 @@ static FORCE_INLINE int32_t buildMergeJoinNotifyOperatorParam(SOperatorParam** p
   return TSDB_CODE_SUCCESS;
 }
 
-static FORCE_INLINE bool tableNeedCache(int64_t uid, SStbJoinPrevJoinCtx* pPrev, SStbJoinPostJoinCtx* pPost, bool rightTable, bool batchFetch) {
-  if (batchFetch) {
-    return true;
-  }
-  
-  if (rightTable) {
-    return pPost->rightCurrUid == pPost->rightNextUid;
-  }
-
-  uint32_t* num = tSimpleHashGet(pPrev->leftCache, &uid, sizeof(uid));
-
-  return (NULL == num) ? false : true;
-}
-
-static void updatePostJoinCurrTableInfo(SStbJoinDynCtrlInfo*          pStbJoin) {
-  SStbJoinPrevJoinCtx*       pPrev = &pStbJoin->ctx.prev;
-  SStbJoinPostJoinCtx*       pPost = &pStbJoin->ctx.post;
-  SStbJoinTableList*         pNode = pPrev->pListHead;
-  int32_t*                   leftVgId = pNode->pLeftVg + pNode->readIdx;
-  int32_t*                   rightVgId = pNode->pRightVg + pNode->readIdx;
-  int64_t*                   leftUid = pNode->pLeftUid + pNode->readIdx;
-  int64_t*                   rightUid = pNode->pRightUid + pNode->readIdx;
-  int64_t                    readIdx = pNode->readIdx + 1;
-  int64_t                    rightPrevUid = pPost->rightCurrUid;
-
-  pPost->leftCurrUid = *leftUid;
-  pPost->rightCurrUid = *rightUid;
-
-  pPost->leftVgId = *leftVgId;
-  pPost->rightVgId = *rightVgId;
-
-  while (true) {
-    if (readIdx < pNode->uidNum) {
-      pPost->rightNextUid = *(pNode->pRightUid + readIdx);
-      break;
-    }
-    
-    pNode = pNode->pNext;
-    if (NULL == pNode) {
-      pPost->rightNextUid = 0;
-      break;
-    }
-    
-    rightUid = pNode->pRightUid;
-    readIdx = 0;
-  }
-
-  pPost->leftNeedCache = tableNeedCache(*leftUid, pPrev, pPost, false, pStbJoin->basic.batchFetch);
-  pPost->rightNeedCache = tableNeedCache(*rightUid, pPrev, pPost, true, pStbJoin->basic.batchFetch);
 
-  if (pPost->rightNeedCache && rightPrevUid != pPost->rightCurrUid) {
-    tSimpleHashPut(pPrev->rightCache, &pPost->rightCurrUid, sizeof(pPost->rightCurrUid), NULL, 0);
-    pStbJoin->execInfo.rightCacheNum++;
-  }  
-}
 
-static FORCE_INLINE int32_t buildBatchTableScanOperatorParam(SOperatorParam** ppRes, int32_t downstreamIdx, SSHashObj* pVg) {
+static int32_t buildBatchTableScanOperatorParam(SOperatorParam** ppRes, int32_t downstreamIdx, SSHashObj* pVg) {
   int32_t code = TSDB_CODE_SUCCESS;
   int32_t vgNum = tSimpleHashGetSize(pVg);
   if (vgNum <= 0 || vgNum > 1) {
@@ -325,13 +357,14 @@ static FORCE_INLINE int32_t buildBatchTableScanOperatorParam(SOperatorParam** pp
     if (code) {
       return code;
     }
+    *(SArray**)p = NULL;
   }
   
   return TSDB_CODE_SUCCESS;
 }
 
 
-static FORCE_INLINE int32_t buildSingleTableScanOperatorParam(SOperatorParam** ppRes, int32_t downstreamIdx, int32_t* pVgId, int64_t* pUid) {
+static int32_t buildSingleTableScanOperatorParam(SOperatorParam** ppRes, int32_t downstreamIdx, int32_t* pVgId, int64_t* pUid) {
   SArray* pUidList = taosArrayInit(1, sizeof(int64_t));
   if (NULL == pUidList) {
     return TSDB_CODE_OUT_OF_MEMORY;
diff --git a/source/libs/executor/src/exchangeoperator.c b/source/libs/executor/src/exchangeoperator.c
index d8756accab11533cbf118868239b4e597efa7793..c1bd01d2a3b9b96518631b6d7f787690a5200255 100644
--- a/source/libs/executor/src/exchangeoperator.c
+++ b/source/libs/executor/src/exchangeoperator.c
@@ -382,7 +382,8 @@ void doDestroyExchangeOperatorInfo(void* param) {
   taosArrayDestroyEx(pExInfo->pRecycledBlocks, freeBlock);
 
   blockDataDestroy(pExInfo->pDummyBlock);
-
+  tSimpleHashCleanup(pExInfo->pHashSources);
+  
   tsem_destroy(&pExInfo->ready);
   taosMemoryFreeClear(param);
 }
@@ -438,11 +439,14 @@ int32_t buildTableScanOperatorParam(SOperatorParam** ppRes, SArray* pUidList, in
 
   STableScanOperatorParam* pScan = taosMemoryMalloc(sizeof(STableScanOperatorParam));
   if (NULL == pScan) {
+    taosMemoryFreeClear(*ppRes);
     return TSDB_CODE_OUT_OF_MEMORY;
   }
 
   pScan->pUidList = taosArrayDup(pUidList, NULL);
   if (NULL == pScan->pUidList) {
+    taosMemoryFree(pScan);
+    taosMemoryFreeClear(*ppRes);
     return TSDB_CODE_OUT_OF_MEMORY;
   }
   pScan->tableSeq = tableSeq;
@@ -500,6 +504,7 @@ int32_t doSendFetchDataRequest(SExchangeInfo* pExchangeInfo, SExecTaskInfo* pTas
     if (msgSize < 0) {
       pTaskInfo->code = TSDB_CODE_OUT_OF_MEMORY;
       taosMemoryFree(pWrapper);
+      freeOperatorParam(req.pOpParam, OP_GET_PARAM);
       return pTaskInfo->code;
     }
 
@@ -507,6 +512,7 @@ int32_t doSendFetchDataRequest(SExchangeInfo* pExchangeInfo, SExecTaskInfo* pTas
     if (NULL == msg) {
       pTaskInfo->code = TSDB_CODE_OUT_OF_MEMORY;
       taosMemoryFree(pWrapper);
+      freeOperatorParam(req.pOpParam, OP_GET_PARAM);
       return pTaskInfo->code;
     }
 
@@ -514,9 +520,12 @@ int32_t doSendFetchDataRequest(SExchangeInfo* pExchangeInfo, SExecTaskInfo* pTas
       pTaskInfo->code = TSDB_CODE_OUT_OF_MEMORY;
       taosMemoryFree(pWrapper);
       taosMemoryFree(msg);
+      freeOperatorParam(req.pOpParam, OP_GET_PARAM);
       return pTaskInfo->code;
     }
 
+    freeOperatorParam(req.pOpParam, OP_GET_PARAM);
+
     qDebug("%s build fetch msg and send to vgId:%d, ep:%s, taskId:0x%" PRIx64 ", execId:%d, %p, %d/%" PRIzu,
            GET_TASKID(pTaskInfo), pSource->addr.nodeId, pSource->addr.epSet.eps[0].fqdn, pSource->taskId,
            pSource->execId, pExchangeInfo, sourceIndex, totalSources);
diff --git a/source/libs/executor/src/executor.c b/source/libs/executor/src/executor.c
index fb63a95a0d4692b96c3585d54f88fc8af0b8ecc2..9bb24e7a7d69a7204a05af1646318cc026cbfabf 100644
--- a/source/libs/executor/src/executor.c
+++ b/source/libs/executor/src/executor.c
@@ -502,10 +502,6 @@ bool qIsDynamicExecTask(qTaskInfo_t tinfo) {
   return ((SExecTaskInfo*)tinfo)->dynamicTask;
 }
 
-void destroyOperatorParamValue(void* pValues) {
-
-}
-
 void destroyOperatorParam(SOperatorParam* pParam) {
   if (NULL == pParam) {
     return;
diff --git a/source/libs/executor/src/executorInt.c b/source/libs/executor/src/executorInt.c
index ebec9aa94e5e8c71b6bc0e6c198cd7234550b0b0..653386063e284fdaf5eb963d4d94ef82e4356930 100644
--- a/source/libs/executor/src/executorInt.c
+++ b/source/libs/executor/src/executorInt.c
@@ -1070,3 +1070,140 @@ void streamOpReloadState(SOperatorInfo* pOperator) {
     downstream->fpSet.reloadStreamStateFn(downstream);
   }
 }
+
+void freeOperatorParamImpl(SOperatorParam* pParam, SOperatorParamType type) {
+  int32_t childrenNum = taosArrayGetSize(pParam->pChildren);
+  for (int32_t i = 0; i < childrenNum; ++i) {
+    SOperatorParam* pChild = taosArrayGetP(pParam->pChildren, i);
+    freeOperatorParam(pChild, type);
+  }
+
+  taosArrayDestroy(pParam->pChildren);
+
+  taosMemoryFree(pParam->value);
+  
+  taosMemoryFree(pParam);
+}
+
+void freeExchangeGetBasicOperatorParam(void* pParam) {
+  SExchangeOperatorBasicParam* pBasic = (SExchangeOperatorBasicParam*)pParam;
+  taosArrayDestroy(pBasic->uidList);
+}
+
+void freeExchangeGetOperatorParam(SOperatorParam* pParam) {
+  SExchangeOperatorParam* pExcParam = (SExchangeOperatorParam*)pParam->value;
+  if (pExcParam->multiParams) {
+    SExchangeOperatorBatchParam* pExcBatch = (SExchangeOperatorBatchParam*)pParam->value;
+    tSimpleHashCleanup(pExcBatch->pBatchs);
+  } else {
+    freeExchangeGetBasicOperatorParam(&pExcParam->basic);
+  }
+
+  freeOperatorParamImpl(pParam, OP_GET_PARAM);
+}
+
+void freeExchangeNotifyOperatorParam(SOperatorParam* pParam) {
+  freeOperatorParamImpl(pParam, OP_NOTIFY_PARAM);
+}
+
+void freeGroupCacheGetOperatorParam(SOperatorParam* pParam) {
+  freeOperatorParamImpl(pParam, OP_GET_PARAM);
+}
+
+void freeGroupCacheNotifyOperatorParam(SOperatorParam* pParam) {
+  freeOperatorParamImpl(pParam, OP_NOTIFY_PARAM);
+}
+
+void freeMergeJoinGetOperatorParam(SOperatorParam* pParam) {
+  freeOperatorParamImpl(pParam, OP_GET_PARAM);
+}
+
+void freeMergeJoinNotifyOperatorParam(SOperatorParam* pParam) {
+  freeOperatorParamImpl(pParam, OP_NOTIFY_PARAM);
+}
+
+void freeTableScanGetOperatorParam(SOperatorParam* pParam) {
+  STableScanOperatorParam* pTableScanParam = (STableScanOperatorParam*)pParam->value;
+  taosArrayDestroy(pTableScanParam->pUidList);
+  freeOperatorParamImpl(pParam, OP_GET_PARAM);
+}
+
+void freeTableScanNotifyOperatorParam(SOperatorParam* pParam) {
+  freeOperatorParamImpl(pParam, OP_NOTIFY_PARAM);
+}
+
+
+void freeOperatorParam(SOperatorParam* pParam, SOperatorParamType type) {
+  if (NULL == pParam) {
+    return;
+  }
+  
+  switch (pParam->opType) {
+    case QUERY_NODE_PHYSICAL_PLAN_EXCHANGE:
+      type == OP_GET_PARAM ? freeExchangeGetOperatorParam(pParam) : freeExchangeNotifyOperatorParam(pParam);
+      break;
+    case QUERY_NODE_PHYSICAL_PLAN_GROUP_CACHE:
+      type == OP_GET_PARAM ? freeGroupCacheGetOperatorParam(pParam) : freeGroupCacheNotifyOperatorParam(pParam);
+      break;
+    case QUERY_NODE_PHYSICAL_PLAN_MERGE_JOIN:
+      type == OP_GET_PARAM ? freeMergeJoinGetOperatorParam(pParam) : freeMergeJoinNotifyOperatorParam(pParam);
+      break;
+    case QUERY_NODE_PHYSICAL_PLAN_TABLE_SCAN:
+      type == OP_GET_PARAM ? freeTableScanGetOperatorParam(pParam) : freeTableScanNotifyOperatorParam(pParam);
+      break;
+    default:
+      qError("unsupported op %d param, type %d", pParam->opType, type);
+      break;
+  }
+}
+
+void freeResetOperatorParams(struct SOperatorInfo* pOperator, SOperatorParamType type, bool allFree) {
+  SOperatorParam** ppParam = NULL;
+  SOperatorParam*** pppDownstramParam = NULL;
+  switch (type) {
+    case OP_GET_PARAM:
+      ppParam = &pOperator->pOperatorGetParam;
+      pppDownstramParam = &pOperator->pDownstreamGetParams;
+      break;
+    case OP_NOTIFY_PARAM:
+      ppParam = &pOperator->pOperatorNotifyParam;
+      pppDownstramParam = &pOperator->pDownstreamNotifyParams;
+      break;
+    default:
+      return;
+  }
+
+  if (*ppParam) {
+    freeOperatorParam(*ppParam, type);
+    *ppParam = NULL;
+  }
+
+  if (*pppDownstramParam) {
+    for (int32_t i = 0; i < pOperator->numOfDownstream; ++i) {
+      if ((*pppDownstramParam)[i]) {
+        freeOperatorParam((*pppDownstramParam)[i], type);
+        (*pppDownstramParam)[i] = NULL;
+      }
+    }
+    if (allFree) {
+      taosMemoryFreeClear(*pppDownstramParam);
+    }
+  }
+}
+
+
+FORCE_INLINE SSDataBlock* getNextBlockFromDownstreamImpl(struct SOperatorInfo* pOperator, int32_t idx, bool clearParam) {
+  if (pOperator->pDownstreamGetParams && pOperator->pDownstreamGetParams[idx]) {
+    qDebug("DynOp: op %s start to get block from downstream %s", pOperator->name, pOperator->pDownstream[idx]->name);
+    SSDataBlock* pBlock = pOperator->pDownstream[idx]->fpSet.getNextExtFn(pOperator->pDownstream[idx], pOperator->pDownstreamGetParams[idx]);
+    if (clearParam) {
+      freeOperatorParam(pOperator->pDownstreamGetParams[idx], OP_GET_PARAM);
+      pOperator->pDownstreamGetParams[idx] = NULL;
+    }
+    return pBlock;
+  }
+  
+  return pOperator->pDownstream[idx]->fpSet.getNextFn(pOperator->pDownstream[idx]);
+}
+
+
diff --git a/source/libs/executor/src/groupcacheoperator.c b/source/libs/executor/src/groupcacheoperator.c
index e904cc7ab800adcbc9bcfd1d2b2ced0b0966ad78..6bbc1cb327904650205370f3d49c40821517965a 100755
--- a/source/libs/executor/src/groupcacheoperator.c
+++ b/source/libs/executor/src/groupcacheoperator.c
@@ -73,15 +73,85 @@ static int32_t initGroupColsInfo(SGroupColsInfo* pCols, bool grpColsMayBeNull, S
 }
 
 static void logGroupCacheExecInfo(SGroupCacheOperatorInfo* pGrpCacheOperator) {
-  char* buf = taosMemoryMalloc(pGrpCacheOperator->execInfo.downstreamNum * 32 + 100);
+  char* buf = taosMemoryMalloc(pGrpCacheOperator->downstreamNum * 32 + 100);
   if (NULL == buf) {
     return;
   }
   int32_t offset = sprintf(buf, "groupCache exec info, downstreamBlkNum:");
-  for (int32_t i = 0; i < pGrpCacheOperator->execInfo.downstreamNum; ++i) {
+  for (int32_t i = 0; i < pGrpCacheOperator->downstreamNum; ++i) {
     offset += sprintf(buf + offset, " %" PRId64 , pGrpCacheOperator->execInfo.pDownstreamBlkNum[i]);
   }
   qDebug("%s", buf);
+  taosMemoryFree(buf);
+}
+
+static void freeSGcSessionCtx(void* p) {
+  SGcSessionCtx* pSession = p;
+  if (pSession->semInit) {
+    tsem_destroy(&pSession->waitSem);
+  }
+}
+
+static void freeSGroupCacheFileInfo(void* p) {
+  SGroupCacheFileInfo* pFileInfo = p;
+  if (pFileInfo->deleted) {
+    return;
+  }
+
+  removeGroupCacheFile(pFileInfo);
+}
+
+static void freeSGcFileCacheCtx(SGcFileCacheCtx* pFileCtx) {
+  taosHashCleanup(pFileCtx->pCacheFile);
+}
+
+static void freeSGcVgroupCtx(void* p) {
+  SGcVgroupCtx* pVgCtx = p;
+  taosArrayDestroy(pVgCtx->pTbList);
+  freeSGcFileCacheCtx(&pVgCtx->fileCtx);
+}
+
+static void freeGcBlockInList(void* p) {
+  SSDataBlock** ppBlock = p;
+  if (*ppBlock) {
+    taosArrayDestroy((*ppBlock)->pDataBlock);
+    taosMemoryFree(*ppBlock);
+  }
+}
+
+static void freeSGcDownstreamCtx(SGcDownstreamCtx* pCtx) {
+  taosArrayDestroy(pCtx->pNewGrpList);
+  tSimpleHashCleanup(pCtx->pVgTbHash);
+  taosHashCleanup(pCtx->pGrpHash);
+
+  taosArrayDestroyEx(pCtx->pFreeBlock, freeGcBlockInList);
+  taosHashCleanup(pCtx->pSessions);
+  taosHashCleanup(pCtx->pWaitSessions);
+  freeSGcFileCacheCtx(&pCtx->fileCtx);
+}
+
+static void destroyGroupCacheDownstreamCtx(SGroupCacheOperatorInfo* pGrpCacheOperator) {
+  if (NULL == pGrpCacheOperator->pDownstreams) {
+    return;
+  }
+  
+  for (int32_t i = 0; i < pGrpCacheOperator->downstreamNum; ++i) {
+    SGcDownstreamCtx* pCtx = &pGrpCacheOperator->pDownstreams[i];
+    freeSGcDownstreamCtx(pCtx);
+  }
+
+  taosMemoryFree(pGrpCacheOperator->pDownstreams);
+}
+
+static void destroySGcBlkCacheInfo(SGcBlkCacheInfo* pBlkCache) {
+  taosHashCleanup(pBlkCache->pDirtyBlk);
+
+  void* p = NULL;
+  while (p = taosHashIterate(pBlkCache->pReadBlk, p)) {
+    freeGcBlockInList(p);
+  }
+
+  taosHashCleanup(pBlkCache->pReadBlk);
 }
 
 static void destroyGroupCacheOperator(void* param) {
@@ -91,7 +161,12 @@ static void destroyGroupCacheOperator(void* param) {
   
   taosMemoryFree(pGrpCacheOperator->groupColsInfo.pColsInfo);
   taosMemoryFree(pGrpCacheOperator->groupColsInfo.pBuf);
+
+  destroyGroupCacheDownstreamCtx(pGrpCacheOperator);
+  destroySGcBlkCacheInfo(&pGrpCacheOperator->blkCache);
   taosHashCleanup(pGrpCacheOperator->pGrpHash);
+
+  taosMemoryFree(pGrpCacheOperator->execInfo.pDownstreamBlkNum);
   
   taosMemoryFreeClear(param);
 }
@@ -117,6 +192,7 @@ static int32_t acquireFdFromFileCtx(SGcFileCacheCtx* pFileCtx, int32_t fileId, S
     if (NULL == pFileCtx->pCacheFile) {
       return TSDB_CODE_OUT_OF_MEMORY;
     }
+    taosHashSetFreeFp(pFileCtx->pCacheFile, freeSGroupCacheFileInfo);
   }
   
   SGroupCacheFileInfo* pTmp = taosHashGet(pFileCtx->pCacheFile, &fileId, sizeof(fileId));
@@ -622,6 +698,7 @@ static int32_t addFileRefTableNum(SGcFileCacheCtx* pFileCtx, int32_t fileId, int
     if (NULL == pFileCtx->pCacheFile) {
       return TSDB_CODE_OUT_OF_MEMORY;
     }
+    taosHashSetFreeFp(pFileCtx->pCacheFile, freeSGroupCacheFileInfo);
   }
   
   SGroupCacheFileInfo* pTmp = taosHashGet(pFileCtx->pCacheFile, &fileId, sizeof(fileId));
@@ -1091,7 +1168,6 @@ static int32_t getBlkFromGroupCache(struct SOperatorInfo* pOperator, SSDataBlock
 
 static int32_t initGroupCacheExecInfo(SOperatorInfo*        pOperator) {
   SGroupCacheOperatorInfo* pInfo = pOperator->info;
-  pInfo->execInfo.downstreamNum = pOperator->numOfDownstream;
   pInfo->execInfo.pDownstreamBlkNum = taosMemoryCalloc(pOperator->numOfDownstream, sizeof(int64_t));
   if (NULL == pInfo->execInfo.pDownstreamBlkNum) {
     return TSDB_CODE_OUT_OF_MEMORY;
@@ -1127,6 +1203,7 @@ static void freeRemoveGroupCacheData(void* p) {
 
   taosArrayDestroy(pGroup->waitQueue);
   taosArrayDestroy(pGroup->blkList.pList);
+  taosThreadMutexDestroy(&pGroup->mutex);
 
   qTrace("group removed");
 }
@@ -1139,6 +1216,7 @@ static int32_t initGroupCacheDownstreamCtx(SOperatorInfo*          pOperator) {
   if (NULL == pInfo->pDownstreams) {
     return TSDB_CODE_OUT_OF_MEMORY;
   }
+  pInfo->downstreamNum = pOperator->numOfDownstream;
 
   for (int32_t i = 0; i < pOperator->numOfDownstream; ++i) {
     SGcDownstreamCtx* pCtx = &pInfo->pDownstreams[i];
@@ -1149,6 +1227,8 @@ static int32_t initGroupCacheDownstreamCtx(SOperatorInfo*          pOperator) {
     if (NULL == pCtx->pVgTbHash) {
       return TSDB_CODE_OUT_OF_MEMORY;
     }
+    tSimpleHashSetFreeFp(pCtx->pVgTbHash, freeSGcVgroupCtx);      
+
     if (pInfo->batchFetch) {
       int32_t defaultVg = 0;
       SGcVgroupCtx vgCtx = {0};
@@ -1172,6 +1252,7 @@ static int32_t initGroupCacheDownstreamCtx(SOperatorInfo*          pOperator) {
     if (pCtx->pSessions == NULL) {
       return TSDB_CODE_OUT_OF_MEMORY;
     }
+    taosHashSetFreeFp(pCtx->pSessions, freeSGcSessionCtx);
   
     pCtx->pFreeBlock = taosArrayInit(10, POINTER_BYTES);
     if (NULL == pCtx->pFreeBlock) {
@@ -1234,7 +1315,7 @@ SOperatorInfo* createGroupCacheOperatorInfo(SOperatorInfo** pDownstream, int32_t
   
   setOperatorInfo(pOperator, "GroupCacheOperator", QUERY_NODE_PHYSICAL_PLAN_GROUP_CACHE, false, OP_NOT_OPENED, pInfo, pTaskInfo);
 
-  pInfo->maxCacheSize = 1;
+  pInfo->maxCacheSize = 0;
   pInfo->grpByUid = pPhyciNode->grpByUid;
   pInfo->globalGrp = pPhyciNode->globalGrp;
   pInfo->batchFetch = pPhyciNode->batchFetch;
diff --git a/source/libs/executor/src/mergejoinoperator.c b/source/libs/executor/src/mergejoinoperator.c
index 8cdc74f623ac4804f9dc1e5e1747c4389d7d11f7..16e0c8c1d2839383e16011bdfb5218a6793114b1 100644
--- a/source/libs/executor/src/mergejoinoperator.c
+++ b/source/libs/executor/src/mergejoinoperator.c
@@ -301,10 +301,15 @@ SOperatorInfo* createMergeJoinOperatorInfo(SOperatorInfo** pDownstream, int32_t
     pInfo->rightBuildTable = tSimpleHashInit(256,  hashFn);
   }
   pOperator->fpSet = createOperatorFpSet(optrDummyOpenFn, doMergeJoin, NULL, destroyMergeJoinOperator, optrDefaultBufFn, NULL, optrDefaultGetNextExtFn, NULL);
+
   code = appendDownstream(pOperator, pDownstream, numOfDownstream);
   if (code != TSDB_CODE_SUCCESS) {
     goto _error;
   }
+  if (newDownstreams) {
+    taosMemoryFree(pDownstream);
+  }
+
   pOperator->numOfRealDownstream = newDownstreams ? 1 : 2;
 
   return pOperator;
@@ -449,7 +454,7 @@ static int32_t mergeJoinGetDownStreamRowsEqualTimeStamp(SOperatorInfo* pOperator
   mergeJoinGetBlockRowsEqualTs(dataBlock, tsSlotId, startPos, timestamp, &endPos, rowLocations, createdBlocks);
   while (endPos == dataBlock->info.rows) {
     SOperatorInfo* ds = pOperator->pDownstream[whichChild];
-    dataBlock = getNextBlockFromDownstream(pOperator, whichChild);
+    dataBlock = getNextBlockFromDownstreamRemain(pOperator, whichChild);
     qError("merge join %s got block for same ts, rows:%" PRId64, whichChild == 0 ? "left" : "right", dataBlock ? dataBlock->info.rows : 0);
     if (whichChild == 0) {
       pJoinInfo->leftPos = 0;
@@ -648,6 +653,8 @@ static int32_t mergeJoinJoinDownstreamTsRanges(SOperatorInfo* pOperator, int64_t
 
 static void setMergeJoinDone(SOperatorInfo* pOperator) {
   pOperator->status = OP_EXEC_DONE;
+  freeOperatorParam(pOperator->pDownstreamGetParams[0], OP_GET_PARAM);
+  freeOperatorParam(pOperator->pDownstreamGetParams[1], OP_GET_PARAM);
   pOperator->pDownstreamGetParams[0] = NULL;
   pOperator->pDownstreamGetParams[1] = NULL;
 }
@@ -658,7 +665,7 @@ static bool mergeJoinGetNextTimestamp(SOperatorInfo* pOperator, int64_t* pLeftTs
   
   if (pJoinInfo->pLeft == NULL || pJoinInfo->leftPos >= pJoinInfo->pLeft->info.rows) {
     if (!pJoinInfo->downstreamFetchDone[0]) {
-      pJoinInfo->pLeft = getNextBlockFromDownstream(pOperator, 0);
+      pJoinInfo->pLeft = getNextBlockFromDownstreamRemain(pOperator, 0);
 
       pJoinInfo->leftPos = 0;
       qError("merge join left got block, rows:%" PRId64, pJoinInfo->pLeft ? pJoinInfo->pLeft->info.rows : 0);
@@ -679,7 +686,7 @@ static bool mergeJoinGetNextTimestamp(SOperatorInfo* pOperator, int64_t* pLeftTs
 
   if (pJoinInfo->pRight == NULL || pJoinInfo->rightPos >= pJoinInfo->pRight->info.rows) {
     if (!pJoinInfo->downstreamFetchDone[1]) {
-      pJoinInfo->pRight = getNextBlockFromDownstream(pOperator, 1);
+      pJoinInfo->pRight = getNextBlockFromDownstreamRemain(pOperator, 1);
 
       if (pOperator->pOperatorGetParam && ((SSortMergeJoinOperatorParam*)pOperator->pOperatorGetParam->value)->initDownstreamNum > 0) {
         ((SSortMergeJoinOperatorParam*)pOperator->pOperatorGetParam->value)->initDownstreamNum--;
diff --git a/source/libs/executor/src/operator.c b/source/libs/executor/src/operator.c
index f3e989609ad77509c6976b754769e939f28f2092..cb01d2be3266ac9fff31d2416340a5fd4f84b334 100644
--- a/source/libs/executor/src/operator.c
+++ b/source/libs/executor/src/operator.c
@@ -551,11 +551,15 @@ SOperatorInfo* createOperator(SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo, SR
   return pOptr;
 }
 
+
 void destroyOperator(SOperatorInfo* pOperator) {
   if (pOperator == NULL) {
     return;
   }
 
+  freeResetOperatorParams(pOperator, OP_GET_PARAM, true);
+  freeResetOperatorParams(pOperator, OP_NOTIFY_PARAM, true);
+
   if (pOperator->fpSet.closeFn != NULL) {
     pOperator->fpSet.closeFn(pOperator->info);
   }
@@ -626,9 +630,12 @@ int32_t mergeOperatorParams(SOperatorParam* pDst, SOperatorParam* pSrc) {
             taosMemoryFree(pBatch);
             return TSDB_CODE_OUT_OF_MEMORY;
           }
+          tSimpleHashSetFreeFp(pBatch->pBatchs, freeExchangeGetBasicOperatorParam);
+          
           tSimpleHashPut(pBatch->pBatchs, &pDExc->basic.vgId, sizeof(pDExc->basic.vgId), &pDExc->basic, sizeof(pDExc->basic));        
           tSimpleHashPut(pBatch->pBatchs, &pSExc->basic.vgId, sizeof(pSExc->basic.vgId), &pSExc->basic, sizeof(pSExc->basic));        
-          destroyOperatorParamValue(pDst->value);
+          
+          taosMemoryFree(pDst->value);
           pDst->value = pBatch;
         } else {
           taosArrayAddAll(pDExc->basic.uidList, pSExc->basic.uidList);
@@ -668,10 +675,10 @@ int32_t setOperatorParams(struct SOperatorInfo* pOperator, SOperatorParam* pInpu
     default:
       return TSDB_CODE_INVALID_PARA;
   }
+
+  freeResetOperatorParams(pOperator, type, false);
   
   if (NULL == pInput) {
-    *ppParam = NULL;
-    taosMemoryFreeClear(*pppDownstramParam);
     return TSDB_CODE_SUCCESS;
   }
 
@@ -710,31 +717,19 @@ int32_t setOperatorParams(struct SOperatorInfo* pOperator, SOperatorParam* pInpu
     }
   }
 
-  taosArrayClear((*ppParam)->pChildren);
+  taosArrayDestroy((*ppParam)->pChildren);
+  (*ppParam)->pChildren = NULL;
 
   return TSDB_CODE_SUCCESS;
 }
 
-SSDataBlock* getNextBlockFromDownstreamImpl(struct SOperatorInfo* pOperator, int32_t idx, bool clearParam) {
-  if (pOperator->pDownstreamGetParams && pOperator->pDownstreamGetParams[idx]) {
-    qDebug("DynOp: op %s start to get block from downstream %s", pOperator->name, pOperator->pDownstream[idx]->name);
-    SSDataBlock* pBlock = pOperator->pDownstream[idx]->fpSet.getNextExtFn(pOperator->pDownstream[idx], pOperator->pDownstreamGetParams[idx]);
-    if (clearParam) {
-      pOperator->pDownstreamGetParams[idx] = NULL;
-    }
-    return pBlock;
-  }
-  
-  return pOperator->pDownstream[idx]->fpSet.getNextFn(pOperator->pDownstream[idx]);
-}
-
 
 SSDataBlock* getNextBlockFromDownstream(struct SOperatorInfo* pOperator, int32_t idx) {
-  return getNextBlockFromDownstreamImpl(pOperator, idx, false);
+  return getNextBlockFromDownstreamImpl(pOperator, idx, true);
 }
 
-SSDataBlock* getNextBlockFromDownstreamOnce(struct SOperatorInfo* pOperator, int32_t idx) {
-  return getNextBlockFromDownstreamImpl(pOperator, idx, true);
+SSDataBlock* getNextBlockFromDownstreamRemain(struct SOperatorInfo* pOperator, int32_t idx) {
+  return getNextBlockFromDownstreamImpl(pOperator, idx, false);
 }
 
 
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index afa4b98ac9485c865f25ca52dfa00cd05c6cfe5e..1978ebe9f2483531ee815b1f326df4e801410960 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -924,6 +924,7 @@ static SSDataBlock* doTableScan(SOperatorInfo* pOperator) {
   if (pOperator->pOperatorGetParam) {
     pOperator->dynamicTask = true;
     int32_t code = createTableListInfoFromParam(pOperator);
+    freeOperatorParam(pOperator->pOperatorGetParam, OP_GET_PARAM);
     pOperator->pOperatorGetParam = NULL;
     if (code != TSDB_CODE_SUCCESS) {
       pTaskInfo->code = code;
diff --git a/source/libs/planner/src/planPhysiCreater.c b/source/libs/planner/src/planPhysiCreater.c
index 0a6ac902ceb1502390c407078c4b4a5159879d1a..dfce643408e653fc4ab748fff2e58d667638303c 100644
--- a/source/libs/planner/src/planPhysiCreater.c
+++ b/source/libs/planner/src/planPhysiCreater.c
@@ -992,9 +992,11 @@ static int32_t createGroupCachePhysiNode(SPhysiPlanContext* pCxt, SNodeList* pCh
   pGrpCache->batchFetch = pLogicNode->batchFetch;
   SDataBlockDescNode* pChildDesc = ((SPhysiNode*)nodesListGetNode(pChildren, 0))->pOutputDataBlockDesc;
   int32_t             code = TSDB_CODE_SUCCESS;
+/*  
   if (TSDB_CODE_SUCCESS == code) {
     code = setListSlotId(pCxt, pChildDesc->dataBlockId, -1, pLogicNode->pGroupCols, &pGrpCache->pGroupCols);
   }
+*/
 
   if (TSDB_CODE_SUCCESS == code) {
     *pPhyNode = (SPhysiNode*)pGrpCache;