fix: check begin_thread return error

src/dnode/src/dnodeVWrite.c

@@ -216,10 +216,17 @@ void dnodeSendRpcVWriteRsp(void *pVnode, void *wparam, int32_t code) {
       // first add to list
       vnodeAddWait(pVnode, NULL, pWrite->rspRet.psem, pWrite);
       pthread_t* thread = taosCreateThread(waitingResultThread, pWrite);
+      if(thread == NULL) {
+        dError(":SDEL pVnode:%p pWrite=%p create thread error.", pWrite->pVnode, pWrite);
+        rpcSendResponse(&rpcRsp);
+        vnodeRemoveWait(pWrite->pVnode, pWrite);
+        vnodeFreeFromWQueue(pVnode, pWrite);
+      } else {
         // set thread
         vnodeSetWait(pVnode, thread, pWrite);
       }
     }
+  }  
 }
 
 static void *dnodeProcessVWriteQueue(void *wparam) {

src/util/src/tthread.c

@@ -31,6 +31,7 @@ pthread_t* taosCreateThread( void *(*__start_routine) (void *), void* param) {
   pthread_attr_destroy(&thattr);
 
   if (ret != 0) {
+    uError("failed to create thread code=%d  since %s", ret, strerror(ret));
     free(pthread);
     return NULL;
   }

src/vnode/src/vnodeMain.c

@@ -686,6 +686,7 @@ void vnodeRemoveWait(void* vparam, void* param) {
     SVnodeObj* pVnode = (SVnodeObj* )vparam;
     SListIter iter = {0};
 
+    vInfo("vgId:%d :SDEL enter remove-wait pWrite=%p list count=%d ", pVnode->vgId, param, listNEles(pVnode->waitThreads));
     tsem_wait(&pVnode->semWait);
     tdListInitIter(pVnode->waitThreads, &iter, TD_LIST_FORWARD);
 
@@ -697,15 +698,18 @@ void vnodeRemoveWait(void* vparam, void* param) {
       SWaitThread * pWaitThread = (SWaitThread *)pNode->data;
       if (pWaitThread->param == param) {
         // found , free SWaitThread memeber
+        if (pWaitThread->pthread) {
           free(pWaitThread->pthread);
+        }
         tdListPopNode(pVnode->waitThreads, pNode);
-        vDebug("vgId:%d :SDEL removed wait thread %p wait list count=%d ", pVnode->vgId, param, listNEles(pVnode->waitThreads));
+        vInfo("vgId:%d :SDEL deleted remove-wait pWrite=%p list count=%d ", pVnode->vgId, param, listNEles(pVnode->waitThreads));
         // free pListNode self
         free(pNode);
         break;
       }
     }
     tsem_post(&pVnode->semWait);
+    vInfo("vgId:%d :SDEL end remove-wait pWrite=%p list count=%d ", pVnode->vgId, param, listNEles(pVnode->waitThreads));
 }
 
 // get wait thread count