diff --git a/src/mnode/src/mnodeCluster.c b/src/mnode/src/mnodeCluster.c
index 69614f77d6876f86c44e42fbfa12ce95e93c452a..5d19b67a5e5c2b1a9169733f593eeba43e37134c 100644
--- a/src/mnode/src/mnodeCluster.c
+++ b/src/mnode/src/mnodeCluster.c
@@ -224,7 +224,7 @@ static int32_t mnodeRetrieveClusters(SShowObj *pShow, char *data, int32_t rows,
     mnodeDecClusterRef(pCluster);
     numOfRows++;
   }
-
+  mnodeVacuumResult(data, cols, numOfRows, rows, pShow);
   pShow->numOfReads += numOfRows;
   return numOfRows;
 }
diff --git a/src/mnode/src/mnodeDnode.c b/src/mnode/src/mnodeDnode.c
index 61c1d4113fea5170dd02e3d46d5f7a579788f326..040bc259cc4096b9f4b86918e4793060c740d7e9 100644
--- a/src/mnode/src/mnodeDnode.c
+++ b/src/mnode/src/mnodeDnode.c
@@ -857,6 +857,7 @@ int32_t mnodeRetrieveModules(SShowObj *pShow, char *data, int32_t rows, void *pC
 
   char* pWrite;
   char* moduleName[5] = { "MNODE", "HTTP", "MONITOR", "MQTT", "UNKNOWN" };
+  int32_t cols;
 
   while (numOfRows < rows) {
     SDnodeObj *pDnode = NULL;
@@ -864,7 +865,7 @@ int32_t mnodeRetrieveModules(SShowObj *pShow, char *data, int32_t rows, void *pC
     if (pDnode == NULL) break;
 
     for (int32_t moduleType = 0; moduleType < TSDB_MOD_MAX; ++moduleType) {
-      int32_t cols = 0;
+      cols = 0;
 
       pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
       *(int16_t *)pWrite = pDnode->dnodeId;
@@ -890,6 +891,7 @@ int32_t mnodeRetrieveModules(SShowObj *pShow, char *data, int32_t rows, void *pC
 
     mnodeDecDnodeRef(pDnode);
   }
+  mnodeVacuumResult(data, cols, numOfRows, rows, pShow);
 
   pShow->numOfReads += numOfRows;
   return numOfRows;
@@ -1081,6 +1083,7 @@ static int32_t mnodeRetrieveVnodes(SShowObj *pShow, char *data, int32_t rows, vo
   } else {
     numOfRows = 0;
   }
+  mnodeVacuumResult(data, cols, numOfRows, rows, pShow);
 
   pShow->numOfReads += numOfRows;
   return numOfRows;
diff --git a/src/mnode/src/mnodeMnode.c b/src/mnode/src/mnodeMnode.c
index bff84d8041cd1bb4ededbd48704a888763453059..8736e30217705ae37129a14dbf1a01693db77e92 100644
--- a/src/mnode/src/mnodeMnode.c
+++ b/src/mnode/src/mnodeMnode.c
@@ -413,6 +413,7 @@ static int32_t mnodeRetrieveMnodes(SShowObj *pShow, char *data, int32_t rows, vo
 
     mnodeDecMnodeRef(pMnode);
   }
+  mnodeVacuumResult(data, cols, numOfRows, rows, pShow);
 
   pShow->numOfReads += numOfRows;
 
diff --git a/src/mnode/src/mnodeUser.c b/src/mnode/src/mnodeUser.c
index c03ff688d2282f931706e80331a884439d78ee04..130b68646faa3497d02faa3f2eb19a68508762bb 100644
--- a/src/mnode/src/mnodeUser.c
+++ b/src/mnode/src/mnodeUser.c
@@ -385,6 +385,7 @@ static int32_t mnodeRetrieveUsers(SShowObj *pShow, char *data, int32_t rows, voi
     numOfRows++;
     mnodeDecUserRef(pUser);
   }
+  mnodeVacuumResult(data, cols, numOfRows, rows, pShow);
 
   pShow->numOfReads += numOfRows;
   return numOfRows;
diff --git a/src/mnode/src/mnodeVgroup.c b/src/mnode/src/mnodeVgroup.c
index 7dbf605405f1dc393c46be871651f0dab57c8f16..3e7a946e20cdd5ea95aeb62ea4e59962af3d09ad 100644
--- a/src/mnode/src/mnodeVgroup.c
+++ b/src/mnode/src/mnodeVgroup.c
@@ -771,6 +771,7 @@ static int32_t mnodeRetrieveVgroups(SShowObj *pShow, char *data, int32_t rows, v
     mnodeDecVgroupRef(pVgroup);
     numOfRows++;
   }
+  mnodeVacuumResult(data, cols, numOfRows, rows, pShow);
 
   pShow->numOfReads += numOfRows;
   mnodeDecTableRef(pTable);