fix(query): fix coverity issues.

include/libs/executor/dataSinkMgt.h

@@ -84,7 +84,7 @@ typedef struct SOutputData {
  * @param pHandle output
  * @return error code
  */
-int32_t dsCreateDataSinker(const SDataSinkNode* pDataSink, DataSinkHandle* pHandle, void* pParam);
+int32_t dsCreateDataSinker(const SDataSinkNode* pDataSink, DataSinkHandle* pHandle, void* pParam, const char* id);
 
 int32_t dsDataSinkGetCacheSize(SDataSinkStat* pStat);
 

source/common/src/tdataformat.c

@@ -893,16 +893,26 @@ void tTagFree(STag *pTag) {
 }
 
 char *tTagValToData(const STagVal *value, bool isJson) {
-  if (!value) return NULL;
+  if (!value) {
+    return NULL;
+  }
+
   char  *data = NULL;
   int8_t typeBytes = 0;
   if (isJson) {
     typeBytes = CHAR_BYTES;
   }
+
   if (IS_VAR_DATA_TYPE(value->type)) {
     data = taosMemoryCalloc(1, typeBytes + VARSTR_HEADER_SIZE + value->nData);
-    if (data == NULL) return NULL;
-    if (isJson) *data = value->type;
+    if (data == NULL) {
+      return NULL;
+    }
+
+    if (isJson) {
+      *data = value->type;
+    }
+
     varDataLen(data + typeBytes) = value->nData;
     memcpy(varDataVal(data + typeBytes), value->pData, value->nData);
   } else {

source/dnode/vnode/src/tsdb/tsdbRead.c

@@ -1523,9 +1523,9 @@ static FORCE_INLINE STSchema* doGetSchemaForTSRow(int32_t sversion, STsdbReader*
     return pReader->pMemSchema;
   }
 
-  taosMemoryFree(pReader->pMemSchema);
+  taosMemoryFreeClear(pReader->pMemSchema);
   int32_t code = metaGetTbTSchemaEx(pReader->pTsdb->pVnode->pMeta, pReader->suid, uid, sversion, &pReader->pMemSchema);
-  if (code != TSDB_CODE_SUCCESS) {
+  if (code != TSDB_CODE_SUCCESS || pReader->pMemSchema == NULL) {
     terrno = code;
     return NULL;
   } else {
@@ -2274,7 +2274,7 @@ static int32_t buildComposedDataBlock(STsdbReader* pReader) {
   }
 
 _end:
-  pResBlock->info.uid = pBlockScanInfo->uid;
+  pResBlock->info.uid = (pBlockScanInfo != NULL)? pBlockScanInfo->uid:0;
   blockDataUpdateTsWindow(pResBlock, 0);
 
   setComposedBlockFlag(pReader, true);
@@ -2569,7 +2569,7 @@ static int32_t doBuildDataBlock(STsdbReader* pReader) {
   }
 
   if (pScanInfo == NULL) {
-    tsdbError("failed to get table, uid:%" PRIu64 ", %s", pBlockInfo->uid, pReader->idStr);
+    tsdbError("failed to get table scan-info, %s", pReader->idStr);
     code = TSDB_CODE_INVALID_PARA;
     return code;
   }

source/libs/executor/src/dataDeleter.c

@@ -254,10 +254,12 @@ static int32_t getCacheSize(struct SDataSinkHandle* pHandle, uint64_t* size) {
 
 int32_t createDataDeleter(SDataSinkManager* pManager, const SDataSinkNode* pDataSink, DataSinkHandle* pHandle,
                           void* pParam) {
+  int32_t code = TSDB_CODE_SUCCESS;
+
   SDataDeleterHandle* deleter = taosMemoryCalloc(1, sizeof(SDataDeleterHandle));
   if (NULL == deleter) {
-    terrno = TSDB_CODE_QRY_OUT_OF_MEMORY;
-    return TSDB_CODE_QRY_OUT_OF_MEMORY;
+    code = TSDB_CODE_OUT_OF_MEMORY;
+    goto _end;
   }
 
   SDataDeleterNode* pDeleterNode = (SDataDeleterNode*)pDataSink;
@@ -270,17 +272,30 @@ int32_t createDataDeleter(SDataSinkManager* pManager, const SDataSinkNode* pData
   deleter->pManager = pManager;
   deleter->pDeleter = pDeleterNode;
   deleter->pSchema = pDataSink->pInputDataBlockDesc;
+
+  if(pParam == NULL) {
+    code = TSDB_CODE_QRY_INVALID_INPUT;
+    qError("invalid input param in creating data deleter, code%s", tstrerror(code));
+    goto _end;
+  }
+
   deleter->pParam = pParam;
   deleter->status = DS_BUF_EMPTY;
   deleter->queryEnd = false;
   deleter->pDataBlocks = taosOpenQueue();
   taosThreadMutexInit(&deleter->mutex, NULL);
   if (NULL == deleter->pDataBlocks) {
-    terrno = TSDB_CODE_QRY_OUT_OF_MEMORY;
+    code = TSDB_CODE_OUT_OF_MEMORY;
+    goto _end;
+  }
+
+  *pHandle = deleter;
+  return code;
+
+  _end:
+  if (deleter != NULL) {
     destroyDataSinker((SDataSinkHandle*)deleter);
     taosMemoryFree(deleter);
-    return TSDB_CODE_QRY_OUT_OF_MEMORY;
   }
-  *pHandle = deleter;
-  return TSDB_CODE_SUCCESS;
+  return code;
 }

source/libs/executor/src/dataDispatcher.c

@@ -231,8 +231,10 @@ static int32_t destroyDataSinker(SDataSinkHandle* pHandle) {
   while (!taosQueueEmpty(pDispatcher->pDataBlocks)) {
     SDataDispatchBuf* pBuf = NULL;
     taosReadQitem(pDispatcher->pDataBlocks, (void**)&pBuf);
-    taosMemoryFreeClear(pBuf->pData);
-    taosFreeQitem(pBuf);
+    if (pBuf != NULL) {
+      taosMemoryFreeClear(pBuf->pData);
+      taosFreeQitem(pBuf);
+    }
   }
   taosCloseQueue(pDispatcher->pDataBlocks);
   taosThreadMutexDestroy(&pDispatcher->mutex);

source/libs/executor/src/dataSinkMgt.c

@@ -33,7 +33,7 @@ int32_t dsDataSinkGetCacheSize(SDataSinkStat* pStat) {
   return 0;
 }
 
-int32_t dsCreateDataSinker(const SDataSinkNode* pDataSink, DataSinkHandle* pHandle, void* pParam) {
+int32_t dsCreateDataSinker(const SDataSinkNode* pDataSink, DataSinkHandle* pHandle, void* pParam, const char* id) {
   switch ((int)nodeType(pDataSink)) {
     case QUERY_NODE_PHYSICAL_PLAN_DISPATCH:
       return createDataDispatcher(&gDataSinkManager, pDataSink, pHandle);
@@ -42,7 +42,9 @@ int32_t dsCreateDataSinker(const SDataSinkNode* pDataSink, DataSinkHandle* pHand
     case QUERY_NODE_PHYSICAL_PLAN_QUERY_INSERT:
       return createDataInserter(&gDataSinkManager, pDataSink, pHandle, pParam);
   }
-  return TSDB_CODE_FAILED;
+
+  qError("invalid input node type:%d, %s", nodeType(pDataSink), id);
+  return TSDB_CODE_QRY_INVALID_INPUT;
 }
 
 int32_t dsPutDataBlock(DataSinkHandle handle, const SInputData* pInput, bool* pContinue) {

source/libs/executor/src/executor.c

@@ -370,7 +370,7 @@ int32_t qCreateExecTask(SReadHandle* readHandle, int32_t vgId, uint64_t taskId,
       goto _error;
     }
 
-    code = dsCreateDataSinker(pSubplan->pDataSink, handle, pSinkParam);
+    code = dsCreateDataSinker(pSubplan->pDataSink, handle, pSinkParam, (*pTask)->id.str);
     if (code != TSDB_CODE_SUCCESS) {
       taosMemoryFreeClear(pSinkParam);
     }

source/libs/executor/src/executorimpl.c

@@ -3098,7 +3098,9 @@ _error:
     destroyAggOperatorInfo(pInfo);
   }
 
+  cleanupExprSupp(&pOperator->exprSupp);
   taosMemoryFreeClear(pOperator);
+
   pTaskInfo->code = TSDB_CODE_OUT_OF_MEMORY;
   return NULL;
 }

source/libs/executor/src/groupoperator.c

@@ -421,14 +421,14 @@ SOperatorInfo* createGroupOperatorInfo(SOperatorInfo* downstream, SAggPhysiNode
     goto _error;
   }
 
-  int32_t    num = 0;
-  SExprInfo* pExprInfo = createExprInfo(pAggNode->pAggFuncs, pAggNode->pGroupKeys, &num);
+  initResultSizeInfo(&pOperator->resultInfo, 4096);
   code = initGroupOptrInfo(&pInfo->pGroupColVals, &pInfo->groupKeyLen, &pInfo->keyBuf, pInfo->pGroupCols);
   if (code != TSDB_CODE_SUCCESS) {
     goto _error;
   }
 
-  initResultSizeInfo(&pOperator->resultInfo, 4096);
+  int32_t    num = 0;
+  SExprInfo* pExprInfo = createExprInfo(pAggNode->pAggFuncs, pAggNode->pGroupKeys, &num);
   code = initAggInfo(&pOperator->exprSupp, &pInfo->aggSup, pExprInfo, num, pInfo->groupKeyLen, pTaskInfo->id.str);
   if (code != TSDB_CODE_SUCCESS) {
     goto _error;
@@ -453,7 +453,9 @@ SOperatorInfo* createGroupOperatorInfo(SOperatorInfo* downstream, SAggPhysiNode
 
 _error:
   pTaskInfo->code = TSDB_CODE_OUT_OF_MEMORY;
-  destroyGroupOperatorInfo(pInfo);
+  if (pInfo != NULL) {
+    destroyGroupOperatorInfo(pInfo);
+  }
   taosMemoryFreeClear(pOperator);
   return NULL;
 }

source/libs/executor/src/scanoperator.c

@@ -466,16 +466,14 @@ int32_t addTagPseudoColumnData(SReadHandle* pHandle, SExprInfo* pPseudoExpr, int
         colDataAppendNNULL(pColInfoData, 0, pBlock->info.rows);
       } else if (pColInfoData->info.type != TSDB_DATA_TYPE_JSON) {
         colDataAppendNItems(pColInfoData, 0, data, pBlock->info.rows);
+        if (IS_VAR_DATA_TYPE(((const STagVal*)p)->type)) {
+          taosMemoryFree(data);
+        }
       } else {  // todo opt for json tag
         for (int32_t i = 0; i < pBlock->info.rows; ++i) {
           colDataAppend(pColInfoData, i, data, false);
         }
       }
-
-      if (data && (pColInfoData->info.type != TSDB_DATA_TYPE_JSON) && p != NULL &&
-          IS_VAR_DATA_TYPE(((const STagVal*)p)->type)) {
-        taosMemoryFree(data);
-      }
     }
   }