diff --git a/source/dnode/vnode/src/inc/vnodeInt.h b/source/dnode/vnode/src/inc/vnodeInt.h
index 0c7a08a2b533331c63814c8469a2296aa4eb2f10..4d3a074963311c4eb6c4a4a276d11a1b3edeb009 100644
--- a/source/dnode/vnode/src/inc/vnodeInt.h
+++ b/source/dnode/vnode/src/inc/vnodeInt.h
@@ -368,6 +368,7 @@ struct SSma {
 void smaHandleRes(void* pVnode, int64_t smaId, const SArray* data);
 
 enum {
+  SNAP_DATA_CFG = 0,
   SNAP_DATA_META = 1,
   SNAP_DATA_TSDB = 2,
   SNAP_DATA_DEL = 3,
diff --git a/source/dnode/vnode/src/tsdb/tsdbSnapshot.c b/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
index f03f7e2a9b69215028d77385575b906dad0abad3..6ba546ecf1fb49b71091e16401d15ff0db5b8701 100644
--- a/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
+++ b/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
@@ -354,6 +354,7 @@ int32_t tsdbSnapRead(STsdbSnapReader* pReader, uint8_t** ppData) {
 
   *ppData = NULL;
 
+#if 0
   // read data file
   if (!pReader->dataDone) {
     code = tsdbSnapReadData(pReader, ppData);
@@ -367,6 +368,7 @@ int32_t tsdbSnapRead(STsdbSnapReader* pReader, uint8_t** ppData) {
       }
     }
   }
+#endif
 
   // read del file
   if (!pReader->delDone) {
@@ -956,6 +958,7 @@ _err:
             tstrerror(code));
   return code;
 }
+#endif
 
 static int32_t tsdbSnapWriteDel(STsdbSnapWriter* pWriter, uint8_t* pData, uint32_t nData) {
   int32_t code = 0;
@@ -966,7 +969,7 @@ static int32_t tsdbSnapWriteDel(STsdbSnapWriter* pWriter, uint8_t* pData, uint32
 
     // reader
     if (pDelFile) {
-      code = tsdbDelFReaderOpen(&pWriter->pDelFReader, pDelFile, pTsdb, NULL);
+      code = tsdbDelFReaderOpen(&pWriter->pDelFReader, pDelFile, pTsdb);
       if (code) goto _err;
 
       code = tsdbReadDelIdx(pWriter->pDelFReader, pWriter->aDelIdxR);
@@ -983,60 +986,57 @@ static int32_t tsdbSnapWriteDel(STsdbSnapWriter* pWriter, uint8_t* pData, uint32
   TABLEID id = *(TABLEID*)(pData + sizeof(SSnapDataHdr));
 
   while (true) {
-    SDelIdx* pDelIdx = NULL;
-    int64_t  n = sizeof(SSnapDataHdr) + sizeof(TABLEID);
-    SDelData delData;
-    SDelIdx  delIdx;
-    int8_t   toBreak = 0;
+    if (pWriter->iDelIdx >= taosArrayGetSize(pWriter->aDelIdxR)) break;
+    if (tTABLEIDCmprFn(taosArrayGet(pWriter->aDelIdxR, pWriter->iDelIdx), &id) >= 0) break;
 
-    if (pWriter->iDelIdx < taosArrayGetSize(pWriter->aDelIdxR)) {
-      pDelIdx = (SDelIdx*)taosArrayGet(pWriter->aDelIdxR, pWriter->iDelIdx);
-    }
+    SDelIdx* pDelIdx = (SDelIdx*)taosArrayGet(pWriter->aDelIdxR, pWriter->iDelIdx);
 
-    if (pDelIdx) {
-      int32_t c = tTABLEIDCmprFn(&id, pDelIdx);
-      if (c < 0) {
-        goto _new_del;
-      } else {
-        code = tsdbReadDelData(pWriter->pDelFReader, pDelIdx, pWriter->aDelData);
-        if (code) goto _err;
+    code = tsdbReadDelData(pWriter->pDelFReader, pDelIdx, pWriter->aDelData);
+    if (code) goto _err;
 
-        pWriter->iDelIdx++;
-        if (c == 0) {
-          toBreak = 1;
-          delIdx = (SDelIdx){.suid = id.suid, .uid = id.uid};
-          goto _merge_del;
-        } else {
-          delIdx = (SDelIdx){.suid = pDelIdx->suid, .uid = pDelIdx->uid};
-          goto _write_del;
-        }
-      }
+    SDelIdx delIdx = *pDelIdx;
+    code = tsdbWriteDelData(pWriter->pDelFWriter, pWriter->aDelData, &delIdx);
+    if (code) goto _err;
+
+    if (taosArrayPush(pWriter->aDelIdxW, &delIdx) == NULL) {
+      code = TSDB_CODE_OUT_OF_MEMORY;
+      goto _err;
     }
 
-  _new_del:
-    toBreak = 1;
-    delIdx = (SDelIdx){.suid = id.suid, .uid = id.uid};
-    taosArrayClear(pWriter->aDelData);
+    pWriter->iDelIdx++;
+  }
 
-  _merge_del:
-    while (n < nData) {
-      n += tGetDelData(pData + n, &delData);
-      if (taosArrayPush(pWriter->aDelData, &delData) == NULL) {
-        code = TSDB_CODE_OUT_OF_MEMORY;
-        goto _err;
-      }
-    }
+  if (pWriter->iDelIdx < taosArrayGetSize(pWriter->aDelIdxR) &&
+      tTABLEIDCmprFn(taosArrayGet(pWriter->aDelIdxR, pWriter->iDelIdx), &id) == 0) {
+    SDelIdx* pDelIdx = (SDelIdx*)taosArrayGet(pWriter->aDelIdxR, pWriter->iDelIdx);
 
-  _write_del:
-    code = tsdbWriteDelData(pWriter->pDelFWriter, pWriter->aDelData, &delIdx);
+    code = tsdbReadDelData(pWriter->pDelFReader, pDelIdx, pWriter->aDelData);
     if (code) goto _err;
 
-    if (taosArrayPush(pWriter->aDelIdxW, &delIdx) == NULL) {
+    pWriter->iDelIdx++;
+  } else {
+    taosArrayClear(pWriter->aDelData);
+  }
+
+  int64_t n = sizeof(SSnapDataHdr) + sizeof(TABLEID);
+  while (n < nData) {
+    SDelData delData;
+
+    n += tGetDelData(pData + n, &delData);
+
+    if (taosArrayPush(pWriter->aDelData, &delData) == NULL) {
       code = TSDB_CODE_OUT_OF_MEMORY;
       goto _err;
     }
+  }
 
-    if (toBreak) break;
+  SDelIdx delIdx = {.suid = id.suid, .uid = id.uid};
+  code = tsdbWriteDelData(pWriter->pDelFWriter, pWriter->aDelData, &delIdx);
+  if (code) goto _err;
+
+  if (taosArrayPush(pWriter->aDelIdxW, &delIdx) == NULL) {
+    code = TSDB_CODE_OUT_OF_MEMORY;
+    goto _err;
   }
 
 _exit:
@@ -1047,9 +1047,7 @@ _err:
             tstrerror(code));
   return code;
 }
-#endif
 
-#if 0
 static int32_t tsdbSnapWriteDelEnd(STsdbSnapWriter* pWriter) {
   int32_t code = 0;
   STsdb*  pTsdb = pWriter->pTsdb;
@@ -1062,7 +1060,7 @@ static int32_t tsdbSnapWriteDelEnd(STsdbSnapWriter* pWriter) {
     code = tsdbReadDelData(pWriter->pDelFReader, pDelIdx, pWriter->aDelData);
     if (code) goto _err;
 
-    SDelIdx delIdx = (SDelIdx){.suid = pDelIdx->suid, .uid = pDelIdx->uid};
+    SDelIdx delIdx = *pDelIdx;
     code = tsdbWriteDelData(pWriter->pDelFWriter, pWriter->aDelData, &delIdx);
     if (code) goto _err;
 
@@ -1095,11 +1093,9 @@ _err:
             tstrerror(code));
   return code;
 }
-#endif
 
 int32_t tsdbSnapWriterOpen(STsdb* pTsdb, int64_t sver, int64_t ever, STsdbSnapWriter** ppWriter) {
-  int32_t code = 0;
-#if 0
+  int32_t          code = 0;
   STsdbSnapWriter* pWriter = NULL;
 
   // alloc
@@ -1168,7 +1164,6 @@ _err:
   tsdbError("vgId:%d, tsdb snapshot writer open for %s failed since %s", TD_VID(pTsdb->pVnode), pTsdb->path,
             tstrerror(code));
   *ppWriter = NULL;
-#endif
   return code;
 }
 
@@ -1210,10 +1205,10 @@ _err:
 }
 
 int32_t tsdbSnapWrite(STsdbSnapWriter* pWriter, uint8_t* pData, uint32_t nData) {
-  int32_t code = 0;
-#if 0
+  int32_t       code = 0;
   SSnapDataHdr* pHdr = (SSnapDataHdr*)pData;
 
+#if 0
   // ts data
   if (pHdr->type == SNAP_DATA_TSDB) {
     code = tsdbSnapWriteData(pWriter, pData, nData);
@@ -1226,6 +1221,7 @@ int32_t tsdbSnapWrite(STsdbSnapWriter* pWriter, uint8_t* pData, uint32_t nData)
       if (code) goto _err;
     }
   }
+#endif
 
   // del data
   if (pHdr->type == SNAP_DATA_DEL) {
@@ -1241,6 +1237,5 @@ _exit:
 _err:
   tsdbError("vgId:%d, tsdb snapshot write for %s failed since %s", TD_VID(pWriter->pTsdb->pVnode), pWriter->pTsdb->path,
             tstrerror(code));
-#endif
   return code;
 }