fix

source/dnode/mgmt/vnode/src/vmWorker.c

@@ -191,6 +191,10 @@ static int32_t vmPutNodeMsgToQueue(SVnodesMgmt *pMgmt, SNodeMsg *pMsg, EQueueTyp
       dTrace("msg:%p, will be written into vnode-sync queue", pMsg);
       code = taosWriteQitem(pVnode->pSyncQ, pMsg);
       break;
+    case MERGE_QUEUE:
+      dTrace("msg:%p, will be written into vnode-merge queue", pMsg);
+      code = taosWriteQitem(pVnode->pMergeQ, pMsg);
+      break;
     default:
       terrno = TSDB_CODE_INVALID_PARA;
       break;
@@ -304,13 +308,13 @@ int32_t vmGetQueueSize(SMgmtWrapper *pWrapper, int32_t vgId, EQueueType qtype) {
 int32_t vmAllocQueue(SVnodesMgmt *pMgmt, SVnodeObj *pVnode) {
   pVnode->pWriteQ = tWWorkerAllocQueue(&pMgmt->writePool, pVnode, (FItems)vmProcessWriteQueue);
   pVnode->pApplyQ = tWWorkerAllocQueue(&pMgmt->writePool, pVnode, (FItems)vmProcessApplyQueue);
-  pVnode->pMergeQ = tWWorkerAllocQueue(&pMgmt->writePool, pVnode, (FItems)vmProcessApplyQueue);
+  pVnode->pMergeQ = tWWorkerAllocQueue(&pMgmt->mergePool, pVnode, (FItems)vmProcessMergeMsg);
   pVnode->pSyncQ = tWWorkerAllocQueue(&pMgmt->syncPool, pVnode, (FItems)vmProcessSyncQueue);
   pVnode->pFetchQ = tQWorkerAllocQueue(&pMgmt->fetchPool, pVnode, (FItem)vmProcessFetchQueue);
   pVnode->pQueryQ = tQWorkerAllocQueue(&pMgmt->queryPool, pVnode, (FItem)vmProcessQueryQueue);
 
   if (pVnode->pApplyQ == NULL || pVnode->pWriteQ == NULL || pVnode->pSyncQ == NULL || pVnode->pFetchQ == NULL ||
-      pVnode->pQueryQ == NULL || pVnode->pMergeQ) {
+      pVnode->pQueryQ == NULL || pVnode->pMergeQ == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     return -1;
   }
@@ -342,6 +346,7 @@ int32_t vmStartWorker(SVnodesMgmt *pMgmt) {
   int32_t maxQueryThreads = minQueryThreads;
   int32_t maxWriteThreads = TMAX(tsNumOfCores, 1);
   int32_t maxSyncThreads = TMAX(tsNumOfCores / 2, 1);
+  int32_t maxMergeThreads = 1;
 
   SQWorkerPool *pQPool = &pMgmt->queryPool;
   pQPool->name = "vnode-query";
@@ -365,6 +370,11 @@ int32_t vmStartWorker(SVnodesMgmt *pMgmt) {
   pWPool->max = maxSyncThreads;
   if (tWWorkerInit(pWPool) != 0) return -1;
 
+  pWPool = &pMgmt->mergePool;
+  pWPool->name = "vnode-merge";
+  pWPool->max = maxMergeThreads;
+  if (tWWorkerInit(pWPool) != 0) return -1;
+
   SSingleWorkerCfg cfg = {
       .minNum = 1, .maxNum = 1, .name = "vnode-mgmt", .fp = (FItem)vmProcessMgmtQueue, .param = pMgmt};
   if (tSingleWorkerInit(&pMgmt->mgmtWorker, &cfg) != 0) {
@@ -382,5 +392,6 @@ void vmStopWorker(SVnodesMgmt *pMgmt) {
   tQWorkerCleanup(&pMgmt->queryPool);
   tWWorkerCleanup(&pMgmt->writePool);
   tWWorkerCleanup(&pMgmt->syncPool);
+  tWWorkerCleanup(&pMgmt->mergePool);
   dDebug("vnode workers are closed");
 }