refactor: do some internal refactor and add some logs.

source/client/src/clientTmq.c

@@ -795,19 +795,23 @@ int32_t tmqHandleAllDelayedTask(tmq_t* pTmq) {
   STaosQall* qall = taosAllocateQall();
   taosReadAllQitems(pTmq->delayedTask, qall);
 
-  tscDebug("consumer:0x%"PRIx64" handle delayed %d tasks before poll data", pTmq->consumerId, qall->numOfItems);
+  if (qall->numOfItems == 0) {
+    taosFreeQall(qall);
+    return TSDB_CODE_SUCCESS;
+  }
 
-  while (1) {
-    int8_t* pTaskType = NULL;
-    taosGetQitem(qall, (void**)&pTaskType);
-    if (pTaskType == NULL) break;
+  tscDebug("consumer:0x%"PRIx64" handle delayed %d tasks before poll data", pTmq->consumerId, qall->numOfItems);
+  int8_t* pTaskType = NULL;
+  taosGetQitem(qall, (void**)&pTaskType);
 
+  while (pTaskType != NULL) {
     if (*pTaskType == TMQ_DELAYED_TASK__ASK_EP) {
       tmqAskEp(pTmq, true);
 
       int64_t* pRefId = taosMemoryMalloc(sizeof(int64_t));
       *pRefId = pTmq->refId;
 
+      tscDebug("consumer:0x%"PRIx64" retrieve ep from mnode in 1s", pTmq->consumerId);
       taosTmrReset(tmqAssignAskEpTask, 1000, pRefId, tmqMgmt.timer, &pTmq->epTimer);
     } else if (*pTaskType == TMQ_DELAYED_TASK__COMMIT) {
       tmqCommitInner(pTmq, NULL, 1, 1, pTmq->commitCb, pTmq->commitCbUserParam);
@@ -815,12 +819,16 @@ int32_t tmqHandleAllDelayedTask(tmq_t* pTmq) {
       int64_t* pRefId = taosMemoryMalloc(sizeof(int64_t));
       *pRefId = pTmq->refId;
 
+      tscDebug("consumer:0x%"PRIx64" commit to mnode in %.2f s", pTmq->consumerId, pTmq->autoCommitInterval/1000.0);
       taosTmrReset(tmqAssignDelayedCommitTask, pTmq->autoCommitInterval, pRefId, tmqMgmt.timer, &pTmq->commitTimer);
     } else if (*pTaskType == TMQ_DELAYED_TASK__REPORT) {
+      // do nothing
     } else {
       ASSERT(0);
     }
+
     taosFreeQitem(pTaskType);
+    taosGetQitem(qall, (void**)&pTaskType);
   }
 
   taosFreeQall(qall);