[TD-1600]<fix>: return error code to client if importing data from file failed.

src/client/src/tscParseInsert.c

@@ -1409,36 +1409,37 @@ typedef struct SImportFileSupport {
 static void parseFileSendDataBlock(void *param, TAOS_RES *tres, int code) {
   assert(param != NULL && tres != NULL);
 
+  char *  tokenBuf = NULL;
+  size_t  n = 0;
+  ssize_t readLen = 0;
+  char *  line = NULL;
+  int32_t count = 0;
+  int32_t maxRows = 0;
+  FILE *  fp   = NULL;
+
   SSqlObj *pSql = tres;
   SSqlCmd *pCmd = &pSql->cmd;
 
-  SImportFileSupport *pSupporter = (SImportFileSupport *) param;
+  SImportFileSupport *pSupporter = (SImportFileSupport *)param;
 
   SSqlObj *pParentSql = pSupporter->pSql;
-  FILE    *fp = pSupporter->fp;
+  fp = pSupporter->fp;
 
   if (taos_errno(pSql) != TSDB_CODE_SUCCESS) {  // handle error
     assert(taos_errno(pSql) == code);
 
-    do {
     if (code == TSDB_CODE_TDB_TABLE_RECONFIGURE) {
       assert(pSql->res.numOfRows == 0);
-        int32_t errc = fseek(fp, 0, SEEK_SET);
-        if (errc < 0) {
+      int32_t ret = fseek(fp, 0, SEEK_SET);
+      if (ret < 0) {
         tscError("%p failed to seek SEEK_SET since:%s", pSql, tstrerror(errno));
-        } else {
-          break;
-        }
+        pParentSql->res.code = TAOS_SYSTEM_ERROR(errno);
+        goto _error;
       }
-
-      taos_free_result(pSql);
-      tfree(pSupporter);
-      fclose(fp);
-
+    } else {
       pParentSql->res.code = code;
-      tscAsyncResultOnError(pParentSql);
-      return;
-    } while (0);
+      goto _error;
+    }
   }
 
   // accumulate the total submit records
@@ -1452,28 +1453,32 @@ static void parseFileSendDataBlock(void *param, TAOS_RES *tres, int code) {
   SParsedDataColInfo spd = {.numOfCols = tinfo.numOfColumns};
   tscSetAssignedColumnInfo(&spd, pSchema, tinfo.numOfColumns);
 
-  size_t  n = 0;
-  ssize_t readLen = 0;
-  char *  line = NULL;
-  int32_t count = 0;
-  int32_t maxRows = 0;
-
   tfree(pCmd->pTableNameList);
   pCmd->pDataBlocks = tscDestroyBlockArrayList(pCmd->pDataBlocks);
 
   if (pCmd->pTableBlockHashList == NULL) {
     pCmd->pTableBlockHashList = taosHashInit(16, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BIGINT), true, false);
+    if (pCmd->pTableBlockHashList == NULL) {
+      pParentSql->res.code = TSDB_CODE_TSC_OUT_OF_MEMORY;
+      goto _error;
+    }
   }
 
   STableDataBlocks *pTableDataBlock = NULL;
-  int32_t ret = tscGetDataBlockFromList(pCmd->pTableBlockHashList, pTableMeta->id.uid, TSDB_PAYLOAD_SIZE,
-                                        sizeof(SSubmitBlk), tinfo.rowSize, pTableMetaInfo->name, pTableMeta, &pTableDataBlock, NULL);
+  int32_t           ret =
+      tscGetDataBlockFromList(pCmd->pTableBlockHashList, pTableMeta->id.uid, TSDB_PAYLOAD_SIZE, sizeof(SSubmitBlk),
+                              tinfo.rowSize, pTableMetaInfo->name, pTableMeta, &pTableDataBlock, NULL);
   if (ret != TSDB_CODE_SUCCESS) {
-//    return ret;
+    pParentSql->res.code = TSDB_CODE_TSC_OUT_OF_MEMORY;
+    goto _error;
   }
 
   tscAllocateMemIfNeed(pTableDataBlock, tinfo.rowSize, &maxRows);
-  char *tokenBuf = calloc(1, 4096);
+  tokenBuf = calloc(1, TSDB_MAX_BYTES_PER_ROW);
+  if (tokenBuf == NULL) {
+    pParentSql->res.code = TSDB_CODE_TSC_OUT_OF_MEMORY;
+    goto _error;
+  }
 
   while ((readLen = tgetline(&line, &n, fp)) != -1) {
     if (('\r' == line[readLen - 1]) || ('\n' == line[readLen - 1])) {
@@ -1501,17 +1506,21 @@ static void parseFileSendDataBlock(void *param, TAOS_RES *tres, int code) {
   }
 
   tfree(tokenBuf);
-  free(line);
+  tfree(line);
+
+  pParentSql->res.code = code;
 
+  if (code == TSDB_CODE_SUCCESS) {
     if (count > 0) {
       code = doPackSendDataBlock(pSql, count, pTableDataBlock);
-    if (code != TSDB_CODE_SUCCESS) {
-      pParentSql->res.code = code;
-      tscAsyncResultOnError(pParentSql);
+      if (code == TSDB_CODE_SUCCESS) {
         return;
+      } else {
+        pParentSql->res.code = code;
+        goto _error;
       }
-
     } else {
+      pParentSql->res.code = code;
       taos_free_result(pSql);
       tfree(pSupporter);
       fclose(fp);
@@ -1519,9 +1528,21 @@ static void parseFileSendDataBlock(void *param, TAOS_RES *tres, int code) {
       pParentSql->fp = pParentSql->fetchFp;
 
       // all data has been sent to vnode, call user function
-    int32_t v = (pParentSql->res.code != TSDB_CODE_SUCCESS) ? pParentSql->res.code : (int32_t)pParentSql->res.numOfRows;
+      int32_t v =
+          (pParentSql->res.code != TSDB_CODE_SUCCESS) ? pParentSql->res.code : (int32_t)pParentSql->res.numOfRows;
       (*pParentSql->fp)(pParentSql->param, pParentSql, v);
+      return;
     }
+  }
+
+_error:
+  tfree(tokenBuf);
+  tfree(line);
+  taos_free_result(pSql);
+  tfree(pSupporter);
+  fclose(fp);
+
+  tscAsyncResultOnError(pParentSql);
 }
 
 void tscProcessMultiVnodesImportFromFile(SSqlObj *pSql) {