diff --git a/source/dnode/vnode/src/tq/tqSink.c b/source/dnode/vnode/src/tq/tqSink.c
index ef3b205b3e2481af6bc755ada64b7caaec6cf642..9abc2f639b8739c79189c5c7de2a3f48e1fb82f0 100644
--- a/source/dnode/vnode/src/tq/tqSink.c
+++ b/source/dnode/vnode/src/tq/tqSink.c
@@ -18,57 +18,87 @@
 SSubmitReq* tdBlockToSubmit(const SArray* pBlocks, const STSchema* pTSchema, bool createTb, int64_t suid,
                             const char* stbFullName, int32_t vgId) {
   SSubmitReq* ret = NULL;
+  SArray*     schemaReqs = NULL;
+  SArray*     schemaReqSz = NULL;
   SArray*     tagArray = taosArrayInit(1, sizeof(STagVal));
   if (!tagArray) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
     return NULL;
   }
 
-  // cal size
-  int32_t cap = sizeof(SSubmitReq);
   int32_t sz = taosArrayGetSize(pBlocks);
-  for (int32_t i = 0; i < sz; i++) {
-    SSDataBlock* pDataBlock = taosArrayGet(pBlocks, i);
-    int32_t      rows = pDataBlock->info.rows;
-    // TODO min
-    int32_t rowSize = pDataBlock->info.rowSize;
-    int32_t maxLen = TD_ROW_MAX_BYTES_FROM_SCHEMA(pTSchema);
-    int32_t schemaLen = 0;
 
-    if (createTb) {
-      SVCreateTbReq createTbReq = {0};
-      char*         cname = buildCtbNameByGroupId(stbFullName, pDataBlock->info.groupId);
-      createTbReq.name = cname;
-      createTbReq.flags = 0;
-      createTbReq.type = TSDB_CHILD_TABLE;
-      createTbReq.ctb.suid = suid;
-
-      STagVal tagVal = {
-          .cid = taosArrayGetSize(pDataBlock->pDataBlock) + 1,
-          .type = TSDB_DATA_TYPE_UBIGINT,
-          .i64 = (int64_t)pDataBlock->info.groupId,
+  if (createTb) {
+    schemaReqs = taosArrayInit(sz, sizeof(void*));
+    schemaReqSz = taosArrayInit(sz, sizeof(int32_t));
+    for (int32_t i = 0; i < sz; i++) {
+      SSDataBlock* pDataBlock = taosArrayGet(pBlocks, i);
+      STagVal      tagVal = {
+               .cid = taosArrayGetSize(pDataBlock->pDataBlock) + 1,
+               .type = TSDB_DATA_TYPE_UBIGINT,
+               .i64 = (int64_t)pDataBlock->info.groupId,
       };
       STag* pTag = NULL;
       taosArrayClear(tagArray);
       taosArrayPush(tagArray, &tagVal);
       tTagNew(tagArray, 1, false, &pTag);
       if (pTag == NULL) {
-        tdDestroySVCreateTbReq(&createTbReq);
+        taosArrayDestroy(schemaReqs);
         taosArrayDestroy(tagArray);
         return NULL;
       }
+
+      SVCreateTbReq createTbReq = {0};
+      createTbReq.name = buildCtbNameByGroupId(stbFullName, pDataBlock->info.groupId);
+      createTbReq.flags = 0;
+      createTbReq.type = TSDB_CHILD_TABLE;
+      createTbReq.ctb.suid = suid;
       createTbReq.ctb.pTag = (uint8_t*)pTag;
 
       int32_t code;
+      int32_t schemaLen;
       tEncodeSize(tEncodeSVCreateTbReq, &createTbReq, schemaLen, code);
-
-      tdDestroySVCreateTbReq(&createTbReq);
       if (code < 0) {
+        tdDestroySVCreateTbReq(&createTbReq);
         taosArrayDestroy(tagArray);
+        taosMemoryFreeClear(ret);
+        return NULL;
+      }
+
+      void* schemaStr = taosMemoryMalloc(schemaLen);
+      if (schemaStr == NULL) {
+        terrno = TSDB_CODE_OUT_OF_MEMORY;
+        return NULL;
+      }
+      taosArrayPush(schemaReqs, &schemaStr);
+      taosArrayPush(schemaReqSz, &schemaLen);
+
+      SEncoder encoder = {0};
+      tEncoderInit(&encoder, schemaStr, schemaLen);
+      code = tEncodeSVCreateTbReq(&encoder, &createTbReq);
+      if (code < 0) {
+        terrno = TSDB_CODE_OUT_OF_MEMORY;
         return NULL;
       }
+      tEncoderClear(&encoder);
+      tdDestroySVCreateTbReq(&createTbReq);
     }
+  }
+  taosArrayDestroy(tagArray);
 
+  // cal size
+  int32_t cap = sizeof(SSubmitReq);
+  for (int32_t i = 0; i < sz; i++) {
+    SSDataBlock* pDataBlock = taosArrayGet(pBlocks, i);
+    int32_t      rows = pDataBlock->info.rows;
+    // TODO min
+    int32_t rowSize = pDataBlock->info.rowSize;
+    int32_t maxLen = TD_ROW_MAX_BYTES_FROM_SCHEMA(pTSchema);
+
+    int32_t schemaLen = 0;
+    if (createTb) {
+      schemaLen = *(int32_t*)taosArrayGet(schemaReqSz, i);
+    }
     cap += sizeof(SSubmitBlk) + schemaLen + rows * maxLen;
   }
 
@@ -99,55 +129,13 @@ SSubmitReq* tdBlockToSubmit(const SArray* pBlocks, const STSchema* pTSchema, boo
 
     int32_t schemaLen = 0;
     if (createTb) {
-      SVCreateTbReq createTbReq = {0};
-      char*         cname = buildCtbNameByGroupId(stbFullName, pDataBlock->info.groupId);
-      createTbReq.name = cname;
-      createTbReq.flags = 0;
-      createTbReq.type = TSDB_CHILD_TABLE;
-      createTbReq.ctb.suid = suid;
-
-      STagVal tagVal = {
-          .cid = taosArrayGetSize(pDataBlock->pDataBlock) + 1,
-          .type = TSDB_DATA_TYPE_UBIGINT,
-          .i64 = (int64_t)pDataBlock->info.groupId,
-      };
-      taosArrayClear(tagArray);
-      taosArrayPush(tagArray, &tagVal);
-      STag* pTag = NULL;
-      tTagNew(tagArray, 1, false, &pTag);
-      if (pTag == NULL) {
-        tdDestroySVCreateTbReq(&createTbReq);
-        taosArrayDestroy(tagArray);
-        taosMemoryFreeClear(ret);
-        return NULL;
-      }
-      createTbReq.ctb.pTag = (uint8_t*)pTag;
-
-      int32_t code;
-      tEncodeSize(tEncodeSVCreateTbReq, &createTbReq, schemaLen, code);
-      if (code < 0) {
-        tdDestroySVCreateTbReq(&createTbReq);
-        taosArrayDestroy(tagArray);
-        taosMemoryFreeClear(ret);
-        return NULL;
-      }
-
-      SEncoder encoder = {0};
-      tEncoderInit(&encoder, blkSchema, schemaLen);
-      code = tEncodeSVCreateTbReq(&encoder, &createTbReq);
-      tEncoderClear(&encoder);
-      tdDestroySVCreateTbReq(&createTbReq);
-
-      if (code < 0) {
-        taosArrayDestroy(tagArray);
-        taosMemoryFreeClear(ret);
-        return NULL;
-      }
+      schemaLen = *(int32_t*)taosArrayGet(schemaReqSz, i);
+      void* schemaStr = taosArrayGetP(schemaReqs, i);
+      memcpy(blkSchema, schemaStr, schemaLen);
     }
     blkHead->schemaLen = htonl(schemaLen);
 
     STSRow* rowData = POINTER_SHIFT(blkSchema, schemaLen);
-
     for (int32_t j = 0; j < rows; j++) {
       SRowBuilder rb = {0};
       tdSRowInit(&rb, pTSchema->version);
@@ -175,7 +163,10 @@ SSubmitReq* tdBlockToSubmit(const SArray* pBlocks, const STSchema* pTSchema, boo
   }
 
   ret->length = htonl(ret->length);
-  taosArrayDestroy(tagArray);
+
+  if (schemaReqs) taosArrayDestroyP(schemaReqs, taosMemoryFree);
+  taosArrayDestroy(schemaReqSz);
+
   return ret;
 }
 
diff --git a/source/os/src/osFile.c b/source/os/src/osFile.c
index 05b7498cc09eaa310433d3c7ad16a8941d717ff4..0c6cd80f443356c8b8bb90709fb70f890e9fb04d 100644
--- a/source/os/src/osFile.c
+++ b/source/os/src/osFile.c
@@ -671,7 +671,7 @@ void taosFprintfFile(TdFilePtr pFile, const char *format, ...) {
   fflush(pFile->fp);
 }
 
-bool taosValidFile(TdFilePtr pFile) { return pFile != NULL; }
+bool taosValidFile(TdFilePtr pFile) { return pFile != NULL && pFile->fd > 0; }
 
 int32_t taosUmaskFile(int32_t maskVal) {
 #ifdef WINDOWS