fix: finish uv task when event loop start uv task failed

source/libs/function/src/tudf.c

@@ -1072,6 +1072,8 @@ int32_t udfcQueueUvTask(SClientUvTaskNode *uvTask) {
 
 int32_t udfcStartUvTask(SClientUvTaskNode *uvTask) {
   fnTrace("event loop start uv task. task: %d, %p", uvTask->type, uvTask);
+  int32_t code = 0;
+
   switch (uvTask->type) {
     case UV_TASK_CONNECT: {
       uv_pipe_t *pipe = taosMemoryMalloc(sizeof(uv_pipe_t));
@@ -1091,6 +1093,7 @@ int32_t udfcStartUvTask(SClientUvTaskNode *uvTask) {
       uv_connect_t *connReq = taosMemoryMalloc(sizeof(uv_connect_t));
       connReq->data = uvTask;
       uv_pipe_connect(connReq, pipe, uvTask->udfc->udfdPipeName, onUdfcPipeConnect);
+      code = 0;
       break;
     }
     case UV_TASK_REQ_RSP: {
@@ -1101,12 +1104,14 @@ int32_t udfcStartUvTask(SClientUvTaskNode *uvTask) {
       if (err != 0) {
         fnError("udfc event loop start req/rsp task uv_write failed. code: %s", uv_strerror(err));
       }
+      code = err;
       break;
     }
     case UV_TASK_DISCONNECT: {
       SClientUvConn *conn = uvTask->pipe->data;
       QUEUE_INSERT_TAIL(&conn->taskQueue, &uvTask->connTaskQueue);
       uv_close((uv_handle_t *) uvTask->pipe, onUdfcPipeClose);
+      code = 0;
       break;
     }
     default: {
@@ -1115,7 +1120,7 @@ int32_t udfcStartUvTask(SClientUvTaskNode *uvTask) {
     }
   }
 
-  return 0;
+  return code;
 }
 
 void udfClientAsyncCb(uv_async_t *async) {
@@ -1133,6 +1138,9 @@ void udfClientAsyncCb(uv_async_t *async) {
     int32_t code = udfcStartUvTask(task);
     if (code == 0) {
       QUEUE_INSERT_TAIL(&udfc->uvProcTaskQueue, &task->procTaskQueue);
+    } else {
+      task->errCode = code;
+      uv_sem_post(&task->taskSem);
     }
   }