diff --git a/src/system/detail/inc/vnode.h b/src/system/detail/inc/vnode.h
index 37e31803d0a308863792a8870cb289fbf35e0815..3a5e7e7260f63c3c6e4e8a9f2c3629a027fa0224 100644
--- a/src/system/detail/inc/vnode.h
+++ b/src/system/detail/inc/vnode.h
@@ -206,28 +206,6 @@ typedef struct {
   char     cont[];
 } SVMsgHeader;
 
-/*
- * The value of QInfo.signature is used to denote that a query is executing, it isn't safe to release QInfo yet.
- * The release operations will be blocked in a busy-waiting until the query operation reach a safepoint.
- * Then it will reset the signature in a atomic operation, followed by release operation.
- * Only the QInfo.signature == QInfo, this structure can be released safely.
- */
-#define TSDB_QINFO_QUERY_FLAG 0x1
-//#define TSDB_QINFO_RESET_SIG(x) atomic_store_64(&((x)->signature), (uint64_t)(x))
-#define TSDB_QINFO_RESET_SIG(x)
-#define TSDB_QINFO_SET_QUERY_FLAG(x)
-//#define TSDB_QINFO_SET_QUERY_FLAG(x) \
-//  atomic_val_compare_exchange_64(&((x)->signature), (uint64_t)(x), TSDB_QINFO_QUERY_FLAG);
-
-// live lock: wait for query reaching a safe-point, release all resources
-// belongs to this query
-#define TSDB_WAIT_TO_SAFE_DROP_QINFO(x)                                                       \
-//  {                                                                                           \
-//    while (atomic_val_compare_exchange_64(&((x)->signature), (x), 0) == TSDB_QINFO_QUERY_FLAG) { \
-//      taosMsleep(1);                                                                          \
-//    }                                                                                         \
-//  }
-
 struct tSQLBinaryExpr;
 
 typedef struct SColumnInfoEx {
diff --git a/src/system/detail/src/vnodeQueryProcess.c b/src/system/detail/src/vnodeQueryProcess.c
index 231b47206ec2b0fcfe91ceb50a0fd4674af07c97..a545645a0967d5f2f12ebfe412cd884cc8fb24f2 100644
--- a/src/system/detail/src/vnodeQueryProcess.c
+++ b/src/system/detail/src/vnodeQueryProcess.c
@@ -1173,15 +1173,13 @@ void vnodeSingleMeterQuery(SSchedMsg *pMsg) {
   }
 
   if (pQInfo->killed) {
-    TSDB_QINFO_RESET_SIG(pQInfo);
-    dTrace("QInfo:%p it is already killed, reset signature and abort", pQInfo);
+    dTrace("QInfo:%p it is already killed, abort", pQInfo);
     vnodeDecRefCount(pQInfo);
   
     return;
   }
 
   assert(pQInfo->refCount >= 1);
-//  assert(pQInfo->signature == TSDB_QINFO_QUERY_FLAG);
 
   SQuery *   pQuery = &pQInfo->query;
   SMeterObj *pMeterObj = pQInfo->pObj;
@@ -1215,10 +1213,7 @@ void vnodeSingleMeterQuery(SSchedMsg *pMsg) {
         pQInfo, pMeterObj->vnode, pMeterObj->sid, pMeterObj->meterId, pQuery->pointsRead, numOfInterpo,
         pQInfo->pointsRead, pQInfo->pointsInterpo, pQInfo->pointsReturned);
 
-    dTrace("QInfo:%p reset signature", pQInfo);
-
     sem_post(&pQInfo->dataReady);
-    TSDB_QINFO_RESET_SIG(pQInfo);
     vnodeDecRefCount(pQInfo);
 
     return;
@@ -1238,10 +1233,7 @@ void vnodeSingleMeterQuery(SSchedMsg *pMsg) {
                  pQInfo, pMeterObj->vnode, pMeterObj->sid, pMeterObj->meterId, pQuery->pointsRead, pQInfo->pointsRead,
                  pQInfo->pointsInterpo, pQInfo->pointsReturned);
 
-          dTrace("QInfo:%p reset signature", pQInfo);
-
           sem_post(&pQInfo->dataReady);
-          TSDB_QINFO_RESET_SIG(pQInfo);
           vnodeDecRefCount(pQInfo);
   
           return;
@@ -1250,12 +1242,12 @@ void vnodeSingleMeterQuery(SSchedMsg *pMsg) {
     }
 
     pQInfo->over = 1;
-    dTrace("QInfo:%p vid:%d sid:%d id:%s, query over, %d points are returned, reset signature", pQInfo,
+    dTrace("QInfo:%p vid:%d sid:%d id:%s, query over, %d points are returned", pQInfo,
            pMeterObj->vnode, pMeterObj->sid, pMeterObj->meterId, pQInfo->pointsRead);
 
     vnodePrintQueryStatistics(pQInfo->pMeterQuerySupporter);
     sem_post(&pQInfo->dataReady);
-    TSDB_QINFO_RESET_SIG(pQInfo);
+    
     vnodeDecRefCount(pQInfo);
     return;
   }
@@ -1284,16 +1276,14 @@ void vnodeSingleMeterQuery(SSchedMsg *pMsg) {
 
   /* check if query is killed or not */
   if (isQueryKilled(pQuery)) {
-    dTrace("QInfo:%p query is killed, reset signature", pQInfo);
+    dTrace("QInfo:%p query is killed", pQInfo);
     pQInfo->over = 1;
   } else {
-    dTrace("QInfo:%p vid:%d sid:%d id:%s, meter query thread completed, %d points are returned, reset signature",
+    dTrace("QInfo:%p vid:%d sid:%d id:%s, meter query thread completed, %d points are returned",
            pQInfo, pMeterObj->vnode, pMeterObj->sid, pMeterObj->meterId, pQuery->pointsRead);
   }
 
-  TSDB_QINFO_RESET_SIG(pQInfo);
   sem_post(&pQInfo->dataReady);
-  
   vnodeDecRefCount(pQInfo);
 }
 
@@ -1305,14 +1295,12 @@ void vnodeMultiMeterQuery(SSchedMsg *pMsg) {
   }
 
   if (pQInfo->killed) {
-    TSDB_QINFO_RESET_SIG(pQInfo);
     vnodeDecRefCount(pQInfo);
-    dTrace("QInfo:%p it is already killed, reset signature and abort", pQInfo);
+    dTrace("QInfo:%p it is already killed, abort", pQInfo);
     return;
   }
 
   assert(pQInfo->refCount >= 1);
-//  assert(pQInfo->signature == TSDB_QINFO_QUERY_FLAG);
 
   SQuery *pQuery = &pQInfo->query;
   pQuery->pointsRead = 0;
@@ -1333,7 +1321,6 @@ void vnodeMultiMeterQuery(SSchedMsg *pMsg) {
   pQInfo->useconds += (taosGetTimestampUs() - st);
   pQInfo->over = isQueryKilled(pQuery) ? 1 : 0;
 
-  dTrace("QInfo:%p reset signature", pQInfo);
   taosInterpoSetStartInfo(&pQInfo->pMeterQuerySupporter->runtimeEnv.interpoInfo, pQuery->pointsRead,
                           pQInfo->query.interpoType);
 
@@ -1341,12 +1328,11 @@ void vnodeMultiMeterQuery(SSchedMsg *pMsg) {
 
   if (pQuery->pointsRead == 0) {
     pQInfo->over = 1;
-    dTrace("QInfo:%p over, %d meters queried, %d points are returned, reset signature", pQInfo, pSupporter->numOfMeters,
+    dTrace("QInfo:%p over, %d meters queried, %d points are returned", pQInfo, pSupporter->numOfMeters,
            pQInfo->pointsRead);
     vnodePrintQueryStatistics(pSupporter);
   }
 
   sem_post(&pQInfo->dataReady);
-  TSDB_QINFO_RESET_SIG(pQInfo);
   vnodeDecRefCount(pQInfo);
 }
diff --git a/src/system/detail/src/vnodeRead.c b/src/system/detail/src/vnodeRead.c
index 5640c6bc0d18aac0887e4740dc8a6a4a8f16f257..ccd59f356b18eee22d8fe8afd1cf82da32b97d8e 100644
--- a/src/system/detail/src/vnodeRead.c
+++ b/src/system/detail/src/vnodeRead.c
@@ -422,8 +422,6 @@ void vnodeFreeQInfo(void *param, bool decQueryRef) {
   if (!vnodeIsQInfoValid(param)) return;
 
   pQInfo->killed = 1;
-  TSDB_WAIT_TO_SAFE_DROP_QINFO(pQInfo);
-
   SMeterObj *pObj = pQInfo->pObj;
   dTrace("QInfo:%p start to free SQInfo", pQInfo);
 
@@ -502,7 +500,6 @@ bool vnodeIsQInfoValid(void *param) {
    * into local variable, then compare by using local variable
    */
   uint64_t sig = pQInfo->signature;
-//  return (sig == (uint64_t)pQInfo) || (sig == TSDB_QINFO_QUERY_FLAG);
   return (sig == (uint64_t)pQInfo);
 }
 
@@ -536,13 +533,11 @@ void vnodeQueryData(SSchedMsg *pMsg) {
   pQInfo = (SQInfo *)pMsg->ahandle;
 
   if (pQInfo->killed) {
-    TSDB_QINFO_RESET_SIG(pQInfo);
-    dTrace("QInfo:%p it is already killed, reset signature and abort", pQInfo);
+    dTrace("QInfo:%p it is already killed, abort", pQInfo);
     vnodeDecRefCount(pQInfo);
     return;
   }
 
-//  assert(pQInfo->signature == TSDB_QINFO_QUERY_FLAG);
   pQuery = &(pQInfo->query);
 
   SMeterObj *pObj = pQInfo->pObj;
@@ -610,9 +605,6 @@ void vnodeQueryData(SSchedMsg *pMsg) {
     tclose(pQInfo->query.lfd);
   }
 
-  /* reset QInfo signature */
-  dTrace("QInfo:%p reset signature", pQInfo);
-  TSDB_QINFO_RESET_SIG(pQInfo);
   sem_post(&pQInfo->dataReady);
   vnodeDecRefCount(pQInfo);
 }
@@ -697,9 +689,6 @@ void *vnodeQueryOnSingleTable(SMeterObj **pMetersObj, SSqlGroupbyExpr *pGroupbyE
     schedMsg.fp = vnodeQueryData;
   }
 
-  // set in query flag
-//  pQInfo->signature = TSDB_QINFO_QUERY_FLAG;
-  
   /*
    * The reference count, which is 2, is for both the current query thread and the future retrieve request,
    * which will always be issued by client to acquire data or free SQInfo struct.
@@ -818,7 +807,6 @@ void *vnodeQueryOnMultiMeters(SMeterObj **pMetersObj, SSqlGroupbyExpr *pGroupbyE
     return pQInfo;
   }
 
-//  pQInfo->signature = TSDB_QINFO_QUERY_FLAG;
   vnodeAddRefCount(pQInfo);
   
   schedMsg.msg = NULL;
@@ -900,18 +888,9 @@ int vnodeSaveQueryResult(void *handle, char *data, int32_t *size) {
          pQInfo->pointsRead);
 
   if (pQInfo->over == 0) {
-    //dTrace("QInfo:%p set query flag, oldSig:%p, func:%s", pQInfo, pQInfo->signature, __FUNCTION__);
-    dTrace("QInfo:%p set query flag, oldSig:%p", pQInfo, pQInfo->signature);
-//    uint64_t oldSignature = TSDB_QINFO_SET_QUERY_FLAG(pQInfo);
-
-    /*
-     * If SQInfo has been released, the value of signature cannot be equalled to the address of pQInfo,
-     * since in release function, the original value has been destroyed. However, this memory area may be reused
-     * by another function. It may be 0 or any value, but it is rarely still be equalled to the address of SQInfo.
-     */
-//    if (oldSignature == 0 || oldSignature != (uint64_t)pQInfo) {
+    dTrace("QInfo:%p set query flag, sig:%p, func:%s", pQInfo, pQInfo->signature, __FUNCTION__);
+
     if (pQInfo->killed == 1) {
-//      dTrace("%p freed or killed, old sig:%p abort query", pQInfo, oldSignature);
       dTrace("%p freed or killed, abort query", pQInfo);
     } else {
       vnodeAddRefCount(pQInfo);