fix(vnode/mgmt): pre close vnode after queue's empty

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

@@ -84,9 +84,6 @@ void vmCloseVnode(SVnodeMgmt *pMgmt, SVnodeObj *pVnode) {
   taosThreadRwlockUnlock(&pMgmt->lock);
   vmReleaseVnode(pMgmt, pVnode);
 
-  dInfo("vgId:%d, pre close", pVnode->vgId);
-  vnodePreClose(pVnode->pImpl);
-
   dInfo("vgId:%d, wait for vnode ref become 0", pVnode->vgId);
   while (pVnode->refCount > 0) taosMsleep(10);
 
@@ -118,6 +115,9 @@ void vmCloseVnode(SVnodeMgmt *pMgmt, SVnodeObj *pVnode) {
 
   dInfo("vgId:%d, all vnode queues is empty", pVnode->vgId);
 
+  dInfo("vgId:%d, pre close", pVnode->vgId);
+  vnodePreClose(pVnode->pImpl);
+
   vmFreeQueue(pMgmt, pVnode);
   vnodeClose(pVnode->pImpl);
   pVnode->pImpl = NULL;

source/dnode/mnode/impl/src/mndDnode.c

@@ -1050,7 +1050,7 @@ static int32_t mndRetrieveDnodes(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pB
         status = "offline";
     }
 
-    char b1[9] = {0};
+    char b1[16] = {0};
     STR_TO_VARSTR(b1, status);
     pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
     colDataAppend(pColInfo, numOfRows, b1, false);