diff --git a/src/sync/src/syncRetrieve.c b/src/sync/src/syncRetrieve.c
index 18af7bd686805bf155e735b547112c2d716621df..505ba68c41f2c2373dba3322b6ed31ba0ac853f1 100644
--- a/src/sync/src/syncRetrieve.c
+++ b/src/sync/src/syncRetrieve.c
@@ -334,7 +334,7 @@ static int64_t syncRetrieveWal(SSyncPeer *pPeer) {
       break;
     }
 
-    code = (int32_t)taosSendFile(pPeer->syncFd, sfd, NULL, size);
+    code = taosSendFile(pPeer->syncFd, sfd, NULL, size);
     close(sfd);
     if (code < 0) {
       sError("%s, failed to send wal:%s for retrieve since %s, code:0x%" PRIx64, pPeer->id, fname, strerror(errno), code);
diff --git a/src/tsdb/src/tsdbMeta.c b/src/tsdb/src/tsdbMeta.c
index cdde2bc91f430273a65aa3ae2ba09bc42771a024..824f69608e8c9d2d00e3219d54b484304827e8ae 100644
--- a/src/tsdb/src/tsdbMeta.c
+++ b/src/tsdb/src/tsdbMeta.c
@@ -213,9 +213,9 @@ void *tsdbGetTableTagVal(const void* pTable, int32_t colId, int16_t type, int16_
   char *val = tdGetKVRowValOfCol(((STable*)pTable)->tagVal, colId);
   assert(type == pCol->type && bytes == pCol->bytes);
 
-  if (val != NULL && IS_VAR_DATA_TYPE(type)) {
-    assert(varDataLen(val) < pCol->bytes);
-  }
+  // if (val != NULL && IS_VAR_DATA_TYPE(type)) {
+  //   assert(varDataLen(val) < pCol->bytes);
+  // }
 
   return val;
 }
diff --git a/src/tsdb/src/tsdbSync.c b/src/tsdb/src/tsdbSync.c
index ee545fbabcd54750625b4a27aa12acb826b21acb..cef561aebea002649e8458057882094a7e42d9b4 100644
--- a/src/tsdb/src/tsdbSync.c
+++ b/src/tsdb/src/tsdbSync.c
@@ -152,14 +152,14 @@ static int32_t tsdbSyncSendMeta(SSyncH *pSynch) {
       return -1;
     }
 
-    int32_t writeLen = (int32_t)mf.info.size;
-    tsdbInfo("vgId:%d, metafile:%s will be sent, size:%d", REPO_ID(pRepo), mf.f.aname, writeLen);
+    int64_t writeLen = mf.info.size;
+    tsdbInfo("vgId:%d, metafile:%s will be sent, size:%" PRId64, REPO_ID(pRepo), mf.f.aname, writeLen);
 
-    int32_t ret = (int32_t)taosSendFile(pSynch->socketFd, TSDB_FILE_FD(&mf), 0, writeLen);
+    int64_t ret = taosSendFile(pSynch->socketFd, TSDB_FILE_FD(&mf), 0, writeLen);
     if (ret != writeLen) {
       terrno = TAOS_SYSTEM_ERROR(errno);
-      tsdbError("vgId:%d, failed to send metafile since %s, ret:%d writeLen:%d", REPO_ID(pRepo), tstrerror(terrno), ret,
-                writeLen);
+      tsdbError("vgId:%d, failed to send metafile since %s, ret:%" PRId64 " writeLen:%" PRId64, REPO_ID(pRepo),
+                tstrerror(terrno), ret, writeLen);
       tsdbCloseMFile(&mf);
       return -1;
     }
@@ -217,18 +217,18 @@ static int32_t tsdbSyncRecvMeta(SSyncH *pSynch) {
 
     tsdbInfo("vgId:%d, metafile:%s is created", REPO_ID(pRepo), mf.f.aname);
 
-    int32_t readLen = (int32_t)pSynch->pmf->info.size;
-    int32_t ret = taosCopyFds(pSynch->socketFd, TSDB_FILE_FD(&mf), readLen);
+    int64_t readLen = pSynch->pmf->info.size;
+    int64_t ret = taosCopyFds(pSynch->socketFd, TSDB_FILE_FD(&mf), readLen);
     if (ret != readLen) {
       terrno = TAOS_SYSTEM_ERROR(errno);
-      tsdbError("vgId:%d, failed to recv metafile since %s, ret:%d readLen:%d", REPO_ID(pRepo), tstrerror(terrno), ret,
-                readLen);
+      tsdbError("vgId:%d, failed to recv metafile since %s, ret:%" PRId64 " readLen:%" PRId64, REPO_ID(pRepo),
+                tstrerror(terrno), ret, readLen);
       tsdbCloseMFile(&mf);
       tsdbRemoveMFile(&mf);
       return -1;
     }
 
-    tsdbInfo("vgId:%d, metafile is received, size:%d", REPO_ID(pRepo), readLen);
+    tsdbInfo("vgId:%d, metafile is received, size:%" PRId64, REPO_ID(pRepo), readLen);
 
     mf.info = pSynch->pmf->info;
     tsdbCloseMFile(&mf);
@@ -463,12 +463,12 @@ static int32_t tsdbSyncRecvDFileSetArray(SSyncH *pSynch) {
           tsdbInfo("vgId:%d, file:%s will be received, osize:%" PRIu64 " rsize:%" PRIu64, REPO_ID(pRepo),
                    pDFile->f.aname, pDFile->info.size, pRDFile->info.size);
 
-          int32_t writeLen = (int32_t)pRDFile->info.size;
-          int32_t ret = taosCopyFds(pSynch->socketFd, pDFile->fd, writeLen);
+          int64_t writeLen = pRDFile->info.size;
+          int64_t ret = taosCopyFds(pSynch->socketFd, pDFile->fd, writeLen);
           if (ret != writeLen) {
             terrno = TAOS_SYSTEM_ERROR(errno);
-            tsdbError("vgId:%d, failed to recv file:%s since %s, ret:%d writeLen:%d", REPO_ID(pRepo), pDFile->f.aname,
-                      tstrerror(terrno), ret, writeLen);
+            tsdbError("vgId:%d, failed to recv file:%s since %s, ret:%" PRId64 " writeLen:%" PRId64, REPO_ID(pRepo),
+                      pDFile->f.aname, tstrerror(terrno), ret, writeLen);
             tsdbCloseDFileSet(&fset);
             tsdbRemoveDFileSet(&fset);
             return -1;
@@ -476,7 +476,7 @@ static int32_t tsdbSyncRecvDFileSetArray(SSyncH *pSynch) {
 
           // Update new file info
           pDFile->info = pRDFile->info;
-          tsdbInfo("vgId:%d, file:%s is received, size:%d", REPO_ID(pRepo), pDFile->f.aname, writeLen);
+          tsdbInfo("vgId:%d, file:%s is received, size:%" PRId64, REPO_ID(pRepo), pDFile->f.aname, writeLen);
         }
 
         tsdbCloseDFileSet(&fset);
@@ -575,14 +575,14 @@ static int32_t tsdbSyncSendDFileSet(SSyncH *pSynch, SDFileSet *pSet) {
         return -1;
       }
 
-      int32_t writeLen = (int32_t)df.info.size;
-      tsdbInfo("vgId:%d, file:%s will be sent, size:%d", REPO_ID(pRepo), df.f.aname, writeLen);
+      int64_t writeLen = df.info.size;
+      tsdbInfo("vgId:%d, file:%s will be sent, size:%" PRId64, REPO_ID(pRepo), df.f.aname, writeLen);
 
-      int32_t ret = (int32_t)taosSendFile(pSynch->socketFd, TSDB_FILE_FD(&df), 0, writeLen);
+      int64_t ret = taosSendFile(pSynch->socketFd, TSDB_FILE_FD(&df), 0, writeLen);
       if (ret != writeLen) {
         terrno = TAOS_SYSTEM_ERROR(errno);
-        tsdbError("vgId:%d, failed to send file:%s since %s, ret:%d writeLen:%d", REPO_ID(pRepo), df.f.aname,
-                  tstrerror(terrno), ret, writeLen);
+        tsdbError("vgId:%d, failed to send file:%s since %s, ret:%" PRId64 " writeLen:%" PRId64, REPO_ID(pRepo),
+                  df.f.aname, tstrerror(terrno), ret, writeLen);
         tsdbCloseDFile(&df);
         return -1;
       }
diff --git a/src/util/inc/tsocket.h b/src/util/inc/tsocket.h
index 35b591b61e007dcf6d4edc39810a60454f37c07a..b4f55169594589b83c299694723cb234bd21ed7d 100644
--- a/src/util/inc/tsocket.h
+++ b/src/util/inc/tsocket.h
@@ -28,7 +28,7 @@ int32_t taosReadn(SOCKET sock, char *buffer, int32_t len);
 int32_t taosWriteMsg(SOCKET fd, void *ptr, int32_t nbytes);
 int32_t taosReadMsg(SOCKET fd, void *ptr, int32_t nbytes);
 int32_t taosNonblockwrite(SOCKET fd, char *ptr, int32_t nbytes);
-int32_t taosCopyFds(SOCKET sfd, int32_t dfd, int64_t len);
+int64_t taosCopyFds(SOCKET sfd, int32_t dfd, int64_t len);
 int32_t taosSetNonblocking(SOCKET sock, int32_t on);
 
 SOCKET  taosOpenUdpSocket(uint32_t localIp, uint16_t localPort);
diff --git a/src/util/src/tsocket.c b/src/util/src/tsocket.c
index e07587686774cb0fa6c7682daca59b400a9451ec..b33cdb8b807f545943e3676a96098818e54b31dd 100644
--- a/src/util/src/tsocket.c
+++ b/src/util/src/tsocket.c
@@ -465,36 +465,36 @@ void tinet_ntoa(char *ipstr, uint32_t ip) {
 #define COPY_SIZE 32768
 // sendfile shall be used
 
-int32_t taosCopyFds(SOCKET sfd, int32_t dfd, int64_t len) {
+int64_t taosCopyFds(SOCKET sfd, int32_t dfd, int64_t len) {
   int64_t leftLen;
-  int32_t readLen, writeLen;
+  int64_t readLen, writeLen;
   char    temp[COPY_SIZE];
 
   leftLen = len;
 
   while (leftLen > 0) {
     if (leftLen < COPY_SIZE)
-      readLen = (int32_t)leftLen;
+      readLen = leftLen;
     else
       readLen = COPY_SIZE;  // 4K
 
-    int32_t retLen = taosReadMsg(sfd, temp, (int32_t)readLen);
+    int64_t retLen = taosReadMsg(sfd, temp, (int32_t)readLen);
     if (readLen != retLen) {
-      uError("read error, readLen:%d retLen:%d len:%" PRId64 " leftLen:%" PRId64 ", reason:%s", readLen, retLen, len,
-             leftLen, strerror(errno));
+      uError("read error, readLen:%" PRId64 " retLen:%" PRId64 " len:%" PRId64 " leftLen:%" PRId64 ", reason:%s",
+             readLen, retLen, len, leftLen, strerror(errno));
       return -1;
     }
 
-    writeLen = taosWriteMsg(dfd, temp, readLen);
+    writeLen = taosWriteMsg(dfd, temp, (int32_t)readLen);
 
     if (readLen != writeLen) {
-      uError("copy error, readLen:%d writeLen:%d len:%" PRId64 " leftLen:%" PRId64 ", reason:%s", readLen, writeLen,
-             len, leftLen, strerror(errno));
+      uError("copy error, readLen:%" PRId64 " writeLen:%" PRId64 " len:%" PRId64 " leftLen:%" PRId64 ", reason:%s",
+             readLen, writeLen, len, leftLen, strerror(errno));
       return -1;
     }
 
     leftLen -= readLen;
   }
 
-  return (int32_t)len;
+  return len;
 }