refactor:do some internal refactor and add some logs.

source/client/src/clientImpl.c

@@ -580,7 +580,8 @@ void schedulerExecCb(SQueryResult* pResult, void* param, int32_t code) {
 
   STscObj* pTscObj = pRequest->pTscObj;
   if (code != TSDB_CODE_SUCCESS && NEED_CLIENT_HANDLE_ERROR(code)) {
-    tscDebug("0x%"PRIx64" client retry to handle the error, code:%s, reqId:0x%"PRIx64, pRequest->self, tstrerror(code), pRequest->requestId);
+    tscDebug("0x%"PRIx64" client retry to handle the error, code:%d - %s, tryCount:%d, reqId:0x%"PRIx64, pRequest->self, code, tstrerror(code),
+        pRequest->retry, pRequest->requestId);
     pRequest->prevCode = code;
     doAsyncQuery(pRequest, true);
     return;

source/client/src/clientMain.c

@@ -629,8 +629,10 @@ void retrieveMetaCallback(SMetaData* pResultMeta, void* param, int32_t code) {
     taosMemoryFree(pWrapper);
     launchAsyncQuery(pRequest, pQuery);
   } else {
+    tscDebug("error happens, code:%d", code);
     if (NEED_CLIENT_HANDLE_ERROR(code)) {
-      tscDebug("0x%"PRIx64" client retry to handle the error, code:%s, reqId:0x%"PRIx64, pRequest->self, tstrerror(code), pRequest->requestId);
+      tscDebug("0x%"PRIx64" client retry to handle the error, code:%d - %s, tryCount:%d, reqId:0x%"PRIx64, pRequest->self, code, tstrerror(code),
+               pRequest->retry, pRequest->requestId);
       pRequest->prevCode = code;
       doAsyncQuery(pRequest, true);
       return;
@@ -703,13 +705,14 @@ int32_t createParseContext(const SRequestObj *pRequest, SParseContext** pCxt) {
 void doAsyncQuery(SRequestObj* pRequest, bool updateMetaForce) {
   SParseContext* pCxt = NULL;
   STscObj *pTscObj = pRequest->pTscObj;
+  int32_t code = 0;
 
   if (pRequest->retry++ > REQUEST_TOTAL_EXEC_TIMES) {
-    pRequest->code = pRequest->prevCode;
+    code = pRequest->prevCode;
     goto _error;
   }
 
-  int32_t code = createParseContext(pRequest, &pCxt);
+  code = createParseContext(pRequest, &pCxt);
   if (code != TSDB_CODE_SUCCESS) {
     goto _error;
   }
@@ -746,7 +749,7 @@ void doAsyncQuery(SRequestObj* pRequest, bool updateMetaForce) {
   }
 
   _error:
-  tscError("0x%"PRIx64" error happens, code:%s, reqId:0x%"PRIx64, pRequest->self, tstrerror(code), pRequest->requestId);
+  tscError("0x%"PRIx64" error happens, code:%d - %s, reqId:0x%"PRIx64, pRequest->self, code, tstrerror(code), pRequest->requestId);
   terrno = code;
   pRequest->code = code;
   pRequest->body.queryFp(pRequest->body.param, pRequest, code);

source/libs/catalog/src/ctgAsync.c

@@ -559,7 +559,7 @@ int32_t ctgHandleTaskEnd(SCtgTask* pTask, int32_t rspCode) {
   SCtgJob* pJob = pTask->pJob;
   int32_t code = 0;
 
-  qDebug("QID:%" PRIx64 " task %d end with rsp %s", pJob->queryId, pTask->taskId, tstrerror(rspCode));
+  qDebug("QID:0x%" PRIx64 " task %d end with rsp %s", pJob->queryId, pTask->taskId, tstrerror(rspCode));
 
   if (rspCode) {
     int32_t lastCode = atomic_val_compare_exchange_32(&pJob->rspCode, 0, rspCode);
@@ -572,7 +572,7 @@ int32_t ctgHandleTaskEnd(SCtgTask* pTask, int32_t rspCode) {
 
   int32_t taskDone = atomic_add_fetch_32(&pJob->taskDone, 1);
   if (taskDone < taosArrayGetSize(pJob->pTasks)) {
-    qDebug("task done: %d, total: %d", taskDone, (int32_t)taosArrayGetSize(pJob->pTasks));
+    qDebug("QID:0x%" PRIx64 " task done: %d, total: %d", pJob->queryId, taskDone, (int32_t)taosArrayGetSize(pJob->pTasks));
     return TSDB_CODE_SUCCESS;
   }