diff --git a/include/libs/wal/wal.h b/include/libs/wal/wal.h
index a1ae1e429d..a0f421212a 100644
--- a/include/libs/wal/wal.h
+++ b/include/libs/wal/wal.h
@@ -201,6 +201,7 @@ int32_t walFetchHead(SWalReader *pRead, int64_t ver, SWalCkHead *pHead);
 int32_t walFetchBody(SWalReader *pRead, SWalCkHead **ppHead);
 int32_t walSkipFetchBody(SWalReader *pRead, const SWalCkHead *pHead);
 
+SWalRef *walRefFirstVer(SWal *, SWalRef *);
 SWalRef *walRefCommittedVer(SWal *);
 
 SWalRef *walOpenRef(SWal *);
diff --git a/source/dnode/vnode/src/tq/tq.c b/source/dnode/vnode/src/tq/tq.c
index 1d5fae33eb..b195cfafb0 100644
--- a/source/dnode/vnode/src/tq/tq.c
+++ b/source/dnode/vnode/src/tq/tq.c
@@ -521,7 +521,12 @@ int32_t tqProcessPollReq(STQ* pTq, SRpcMsg* pMsg) {
             tqOffsetResetToData(&fetchOffsetNew, 0, 0);
           }
         } else {
-          tqOffsetResetToLog(&fetchOffsetNew, walGetFirstVer(pTq->pVnode->pWal));
+          pHandle->pRef = walRefFirstVer(pTq->pVnode->pWal, pHandle->pRef);
+          if (pHandle->pRef == NULL) {
+            terrno = TSDB_CODE_OUT_OF_MEMORY;
+            return -1;
+          }
+          tqOffsetResetToLog(&fetchOffsetNew, pHandle->pRef->refVer - 1);
         }
       } else if (reqOffset.type == TMQ_OFFSET__RESET_LATEST) {
         if (pHandle->execHandle.subType == TOPIC_SUB_TYPE__COLUMN) {
@@ -719,6 +724,8 @@ int32_t tqProcessPollReq(STQ* pTq, SRpcMsg* pMsg) {
 int32_t tqProcessDeleteSubReq(STQ* pTq, int64_t version, char* msg, int32_t msgLen) {
   SMqVDeleteReq* pReq = (SMqVDeleteReq*)msg;
 
+  tqDebug("vgId:%d, delete sub: %s", pTq->pVnode->config.vgId, pReq->subKey);
+
   taosWLockLatch(&pTq->pushLock);
   int32_t code = taosHashRemove(pTq->pPushMgr, pReq->subKey, strlen(pReq->subKey));
   if (code != 0) {
diff --git a/source/libs/wal/src/walRef.c b/source/libs/wal/src/walRef.c
index e86111109c..43470f4c82 100644
--- a/source/libs/wal/src/walRef.c
+++ b/source/libs/wal/src/walRef.c
@@ -77,14 +77,41 @@ void walUnrefVer(SWalRef *pRef) {
 }
 #endif
 
-SWalRef *walRefCommittedVer(SWal *pWal) {
-  SWalRef *pRef = walOpenRef(pWal);
+SWalRef *walRefFirstVer(SWal *pWal, SWalRef *pRef) {
   if (pRef == NULL) {
-    return NULL;
+    pRef = walOpenRef(pWal);
+    if (pRef == NULL) {
+      return NULL;
+    }
   }
   taosThreadMutexLock(&pWal->mutex);
 
-  int64_t ver = walGetCommittedVer(pWal);
+  int64_t ver = walGetFirstVer(pWal);
+
+  wDebug("vgId:%d, wal ref version %" PRId64 " for first", pWal->cfg.vgId, ver);
+
+  pRef->refVer = ver;
+  // bsearch in fileSet
+  SWalFileInfo tmpInfo;
+  tmpInfo.firstVer = ver;
+  SWalFileInfo *pRet = taosArraySearch(pWal->fileInfoSet, &tmpInfo, compareWalFileInfo, TD_LE);
+  ASSERT(pRet != NULL);
+  pRef->refFile = pRet->firstVer;
+
+  taosThreadMutexUnlock(&pWal->mutex);
+  return pRef;
+}
+
+SWalRef *walRefCommittedVer(SWal *pWal) {
+  SWalRef *pRef = walOpenRef(pWal);
+  if (pRef == NULL) {
+    return NULL;
+  }
+  taosThreadMutexLock(&pWal->mutex);
+
+  int64_t ver = walGetCommittedVer(pWal);
+
+  wDebug("vgId:%d, wal ref version %" PRId64 " for committed", pWal->cfg.vgId, ver);
 
   pRef->refVer = ver;
   // bsearch in fileSet
diff --git a/source/os/src/osTime.c b/source/os/src/osTime.c
index cd4324a592..685693a709 100644
--- a/source/os/src/osTime.c
+++ b/source/os/src/osTime.c
@@ -33,6 +33,11 @@
 #include <time.h>
 //#define TM_YEAR_BASE 1970 //origin
 #define TM_YEAR_BASE 1900  // slguan
+
+// This magic number is the number of 100 nanosecond intervals since January 1, 1601 (UTC)
+// until 00:00:00 January 1, 1970
+static const uint64_t TIMEEPOCH = ((uint64_t)116444736000000000ULL);
+
 /*
  * We do not implement alternate representations. However, we always
  * check whether a given modifier is allowed for a certain conversion.
@@ -341,15 +346,17 @@ char *taosStrpTime(const char *buf, const char *fmt, struct tm *tm) {
 
 int32_t taosGetTimeOfDay(struct timeval *tv) {
 #ifdef WINDOWS
-  time_t t;
-  t = taosGetTimestampSec();
-  SYSTEMTIME st;
-  GetLocalTime(&st);
+  LARGE_INTEGER t;
+  FILETIME      f;
 
-  tv->tv_sec = (long)t;
-  tv->tv_usec = st.wMilliseconds * 1000;
+  GetSystemTimeAsFileTime(&f);
+  t.QuadPart = f.dwHighDateTime;
+  t.QuadPart <<= 32;
+  t.QuadPart |= f.dwLowDateTime;
 
-  return 0;
+  t.QuadPart -= TIMEEPOCH;
+  tv->tv_sec = t.QuadPart / 10000000;
+  tv->tv_usec = (t.QuadPart % 10000000) / 10;
 #else
   return gettimeofday(tv, NULL);
 #endif
@@ -550,37 +557,13 @@ int32_t taosClockGetTime(int clock_id, struct timespec *pTS) {
 #ifdef WINDOWS
   LARGE_INTEGER        t;
   FILETIME             f;
-  static FILETIME      ff;
-  static SYSTEMTIME    ss;
-  static LARGE_INTEGER offset;
-
-  static int8_t        offsetInit = 0;
-  static volatile bool offsetInitFinished = false;
-  int8_t               old = atomic_val_compare_exchange_8(&offsetInit, 0, 1);
-  if (0 == old) {
-    ss.wYear = 1970;
-    ss.wMonth = 1;
-    ss.wDay = 1;
-    ss.wHour = 0;
-    ss.wMinute = 0;
-    ss.wSecond = 0;
-    ss.wMilliseconds = 0;
-    SystemTimeToFileTime(&ss, &ff);
-    offset.QuadPart = ff.dwHighDateTime;
-    offset.QuadPart <<= 32;
-    offset.QuadPart |= ff.dwLowDateTime;
-    offsetInitFinished = true;
-  } else {
-    while (!offsetInitFinished)
-      ;  // Ensure initialization is completed.
-  }
 
   GetSystemTimeAsFileTime(&f);
   t.QuadPart = f.dwHighDateTime;
   t.QuadPart <<= 32;
   t.QuadPart |= f.dwLowDateTime;
 
-  t.QuadPart -= offset.QuadPart;
+  t.QuadPart -= TIMEEPOCH;
   pTS->tv_sec = t.QuadPart / 10000000;
   pTS->tv_nsec = (t.QuadPart % 10000000) * 100;
   return (0);