diff --git a/source/client/src/clientHb.c b/source/client/src/clientHb.c
index 48fa2d79382f59aa058d9455f7dbc22af0ac03ad..e2d75d39e34c9077591101e636255027e4b672d7 100644
--- a/source/client/src/clientHb.c
+++ b/source/client/src/clientHb.c
@@ -264,15 +264,12 @@ static int32_t hbQueryHbRspHandle(SAppHbMgr *pAppHbMgr, SClientHbRsp *pRsp) {
 
 static int32_t hbAsyncCallBack(void *param, SDataBuf *pMsg, int32_t code) {
   static int32_t emptyRspNum = 0;
-  if (code != 0) {
-    taosMemoryFreeClear(param);
-    return -1;
-  }
-
   char             *key = (char *)param;
   SClientHbBatchRsp pRsp = {0};
-  tDeserializeSClientHbBatchRsp(pMsg->pData, pMsg->len, &pRsp);
-
+  if (TSDB_CODE_SUCCESS == code) {
+    tDeserializeSClientHbBatchRsp(pMsg->pData, pMsg->len, &pRsp);
+  }
+  
   int32_t rspNum = taosArrayGetSize(pRsp.rsps);
 
   taosThreadMutexLock(&appInfo.mutex);
@@ -288,6 +285,10 @@ static int32_t hbAsyncCallBack(void *param, SDataBuf *pMsg, int32_t code) {
 
   taosMemoryFreeClear(param);
 
+  if (code != 0) {
+    (*pInst)->onlineDnodes = 0;
+  }
+
   if (rspNum) {
     tscDebug("hb got %d rsp, %d empty rsp received before", rspNum,
              atomic_val_compare_exchange_32(&emptyRspNum, emptyRspNum, 0));
diff --git a/source/libs/catalog/inc/catalogInt.h b/source/libs/catalog/inc/catalogInt.h
index 9d0e3871cc5d428fcb0497eafacd2bbe00271b3b..7637c66b8428adf2aea5826a2de1a8aa8f99aea5 100644
--- a/source/libs/catalog/inc/catalogInt.h
+++ b/source/libs/catalog/inc/catalogInt.h
@@ -166,7 +166,7 @@ typedef struct SCtgDBCache {
   int8_t           deleted;
   SCtgVgCache      vgCache;
   SHashObj        *tbCache;         // key:tbname, value:SCtgTbCache
-  SHashObj        *stbCache;        // key:suid, value:STableMeta*
+  SHashObj        *stbCache;        // key:suid, value:char*
 } SCtgDBCache;
 
 typedef struct SCtgRentSlot {
diff --git a/source/libs/qworker/src/qworker.c b/source/libs/qworker/src/qworker.c
index cf8116fee74a49b49198969d268a5dac62624889..757279269af8ed2e32221918ea42165eb19e9588 100644
--- a/source/libs/qworker/src/qworker.c
+++ b/source/libs/qworker/src/qworker.c
@@ -517,7 +517,7 @@ int32_t qwProcessQuery(QW_FPARAMS_DEF, SQWMsg *qwMsg, const char* sql) {
   ctx->needFetch = qwMsg->msgInfo.needFetch;
   ctx->queryType = qwMsg->msgType;
 
-  QW_TASK_DLOGL("subplan json string, len:%d, %s", qwMsg->msgLen, qwMsg->msg);
+  //QW_TASK_DLOGL("subplan json string, len:%d, %s", qwMsg->msgLen, qwMsg->msg);
 
   code = qStringToSubplan(qwMsg->msg, &plan);
   if (TSDB_CODE_SUCCESS != code) {
diff --git a/source/libs/scalar/src/scalar.c b/source/libs/scalar/src/scalar.c
index 2cbe1e5c96e04fe4353468ed1411ab07fb2ea00b..408249404e834a387d52ca4e6601fa5d9fc4ece8 100644
--- a/source/libs/scalar/src/scalar.c
+++ b/source/libs/scalar/src/scalar.c
@@ -578,7 +578,7 @@ _return:
   SCL_RET(code);
 }
 
-EDealRes sclRewriteBasedOnOptr(SNode** pNode, SScalarCtx *ctx, EOperatorType opType) {
+EDealRes sclRewriteNullInOptr(SNode** pNode, SScalarCtx *ctx, EOperatorType opType) {
   if (opType <= OP_TYPE_CALC_MAX) {
     SValueNode *res = (SValueNode *)nodesMakeNode(QUERY_NODE_VALUE);
     if (NULL == res) {
@@ -610,6 +610,24 @@ EDealRes sclRewriteBasedOnOptr(SNode** pNode, SScalarCtx *ctx, EOperatorType opT
   return DEAL_RES_CONTINUE;
 }
 
+EDealRes sclAggFuncWalker(SNode* pNode, void* pContext) {
+  if (QUERY_NODE_FUNCTION == nodeType(pNode)) {
+    SFunctionNode* pFunc = (SFunctionNode*)pNode;
+    *(bool*)pContext = fmIsAggFunc(pFunc->funcId);
+    if (*(bool*)pContext) {
+      return DEAL_RES_END;
+    }
+  }
+
+  return DEAL_RES_CONTINUE;
+}
+
+
+bool sclContainsAggFuncNode(SNode* pNode) {
+  bool aggFunc = false;
+  nodesWalkExpr(pNode, sclAggFuncWalker, (void *)&aggFunc);
+  return aggFunc;
+}
 
 EDealRes sclRewriteNonConstOperator(SNode** pNode, SScalarCtx *ctx) {
   SOperatorNode *node = (SOperatorNode *)*pNode;
@@ -617,8 +635,9 @@ EDealRes sclRewriteNonConstOperator(SNode** pNode, SScalarCtx *ctx) {
 
   if (node->pLeft && (QUERY_NODE_VALUE == nodeType(node->pLeft))) {
     SValueNode *valueNode = (SValueNode *)node->pLeft;
-    if (SCL_IS_NULL_VALUE_NODE(valueNode) && (node->opType != OP_TYPE_IS_NULL && node->opType != OP_TYPE_IS_NOT_NULL)) {
-      return sclRewriteBasedOnOptr(pNode, ctx, node->opType);
+    if (SCL_IS_NULL_VALUE_NODE(valueNode) && (node->opType != OP_TYPE_IS_NULL && node->opType != OP_TYPE_IS_NOT_NULL) 
+        && (!sclContainsAggFuncNode(node->pRight))) {
+      return sclRewriteNullInOptr(pNode, ctx, node->opType);
     }
 
     if (IS_STR_DATA_TYPE(valueNode->node.resType.type) && node->pRight && nodesIsExprNode(node->pRight) 
@@ -633,8 +652,9 @@ EDealRes sclRewriteNonConstOperator(SNode** pNode, SScalarCtx *ctx) {
 
   if (node->pRight && (QUERY_NODE_VALUE == nodeType(node->pRight))) {
     SValueNode *valueNode = (SValueNode *)node->pRight;
-    if (SCL_IS_NULL_VALUE_NODE(valueNode) && (node->opType != OP_TYPE_IS_NULL && node->opType != OP_TYPE_IS_NOT_NULL)) {
-      return sclRewriteBasedOnOptr(pNode, ctx, node->opType);
+    if (SCL_IS_NULL_VALUE_NODE(valueNode) && (node->opType != OP_TYPE_IS_NULL && node->opType != OP_TYPE_IS_NOT_NULL)
+       && (!sclContainsAggFuncNode(node->pLeft))) {
+      return sclRewriteNullInOptr(pNode, ctx, node->opType);
     }
 
     if (IS_STR_DATA_TYPE(valueNode->node.resType.type) && node->pLeft && nodesIsExprNode(node->pLeft) 
@@ -656,7 +676,7 @@ EDealRes sclRewriteNonConstOperator(SNode** pNode, SScalarCtx *ctx) {
           ERASE_NODE(listNode->pNodeList);
           continue;
         } else { //OP_TYPE_NOT_IN
-          return sclRewriteBasedOnOptr(pNode, ctx, node->opType);
+          return sclRewriteNullInOptr(pNode, ctx, node->opType);
         }
       }
 
@@ -664,7 +684,7 @@ EDealRes sclRewriteNonConstOperator(SNode** pNode, SScalarCtx *ctx) {
     }
 
     if (listNode->pNodeList->length <= 0) {
-      return sclRewriteBasedOnOptr(pNode, ctx, node->opType);
+      return sclRewriteNullInOptr(pNode, ctx, node->opType);
     }
   }