refact: post sem in vnode while sync timeout

source/dnode/mgmt/mgmt_vnode/src/vmInt.c

@@ -335,15 +335,17 @@ static void vmCleanup(SVnodeMgmt *pMgmt) {
 }
 
 static void vmCheckSyncTimeout(SVnodeMgmt *pMgmt) {
-  taosThreadRwlockRdlock(&pMgmt->lock);
-  void *pIter = taosHashIterate(pMgmt->hash, NULL);
-  while (pIter) {
-    SVnodeObj **ppVnode = pIter;
-    if (ppVnode == NULL || *ppVnode == NULL) continue;
+  int32_t     numOfVnodes = 0;
+  SVnodeObj **ppVnodes = vmGetVnodeListFromHash(pMgmt, &numOfVnodes);
 
-    SVnodeObj *pVnode = *ppVnode;
+  for (int32_t i = 0; i < numOfVnodes; ++i) {
+    SVnodeObj *pVnode = ppVnodes[i];
     vnodeSyncCheckTimeout(pVnode->pImpl);
-    pIter = taosHashIterate(pMgmt->hash, pIter);
+    vmReleaseVnode(pMgmt, pVnode);
+  }
+
+  if (ppVnodes != NULL) {
+    taosMemoryFree(ppVnodes);
   }
 }
 

source/libs/sync/src/syncMain.c

@@ -223,11 +223,15 @@ void syncSendTimeoutRsp(int64_t rid, int64_t seq) {
   if (pNode == NULL) return;
 
   SRpcMsg rpcMsg = {0};
-  (void)syncRespMgrGetAndDel(pNode->pSyncRespMgr, seq, &rpcMsg.info);
+  int32_t ret = syncRespMgrGetAndDel(pNode->pSyncRespMgr, seq, &rpcMsg.info);
   rpcMsg.code = TSDB_CODE_SYN_TIMEOUT;
 
   syncNodeRelease(pNode);
-  rpcSendResponse(&rpcMsg);
+  if (ret == 1) {
+    sInfo("send response since sync timeout, seq:%" PRId64 " handle:%p ahandle:%p", seq, rpcMsg.info.handle,
+          rpcMsg.info.ahandle);
+    rpcSendResponse(&rpcMsg);
+  }
 }
 
 SyncIndex syncMinMatchIndex(SSyncNode* pSyncNode) {