diff --git a/source/dnode/vnode/src/inc/tsdb.h b/source/dnode/vnode/src/inc/tsdb.h
index 2e680511c3a1830f917b3997ec4b8cf443e58afc..a2ac995c130132fc467b784eb7cfae0c52452de8 100644
--- a/source/dnode/vnode/src/inc/tsdb.h
+++ b/source/dnode/vnode/src/inc/tsdb.h
@@ -115,7 +115,6 @@ int32_t tGetBlock(uint8_t *p, void *ph);
 int32_t tBlockCmprFn(const void *p1, const void *p2);
 bool    tBlockHasSma(SBlock *pBlock);
 // SBlockIdx
-void    tBlockIdxReset(SBlockIdx *pBlockIdx);
 int32_t tPutBlockIdx(uint8_t *p, void *ph);
 int32_t tGetBlockIdx(uint8_t *p, void *ph);
 int32_t tCmprBlockIdx(void const *lhs, void const *rhs);
@@ -361,10 +360,6 @@ struct TSDBROW {
 struct SBlockIdx {
   int64_t suid;
   int64_t uid;
-  TSKEY   minKey;
-  TSKEY   maxKey;
-  int64_t minVersion;
-  int64_t maxVersion;
   int64_t offset;
   int64_t size;
 };
diff --git a/source/dnode/vnode/src/tsdb/tsdbCache.c b/source/dnode/vnode/src/tsdb/tsdbCache.c
index b3e0695c1002b897c2aed8256041bbdfed38c5cf..723caca5d787dea7c74fee96fcbc9f21287f537a 100644
--- a/source/dnode/vnode/src/tsdb/tsdbCache.c
+++ b/source/dnode/vnode/src/tsdb/tsdbCache.c
@@ -500,9 +500,7 @@ static int32_t getNextRowFromFS(void *iter, TSDBROW **ppRow) {
       if (code) goto _err;
 
       /* if (state->pBlockIdx) { */
-      /*   tBlockIdxReset(state->blockIdx); */
       /* } */
-      /* tBlockIdxReset(state->blockIdx); */
       /* code = tMapDataSearch(&state->blockIdxMap, state->pBlockIdxExp, tGetBlockIdx, tCmprBlockIdx,
        * &state->blockIdx);
        */
diff --git a/source/dnode/vnode/src/tsdb/tsdbSnapshot.c b/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
index 193f4997b05ef108e5a3da70545b73e3254bccf6..f3b321dfae5dd3e72941fb0da92d4be3f2c9bd59 100644
--- a/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
+++ b/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
@@ -383,14 +383,15 @@ struct STsdbSnapWriter {
   int32_t       iRow;
 
   SDataFWriter* pDataFWriter;
-  SArray*       aBlockIdxW;  // SArray<SBlockIdx>
   SBlockIdx*    pBlockIdxW;
   SBlockIdx     blockIdx;
-  SMapData      mBlockW;  // SMapData<SBlock>
   SBlock*       pBlockW;
   SBlock        blockW;
   SBlockData    bDataW;
 
+  SMapData mBlockW;     // SMapData<SBlock>
+  SArray*  aBlockIdxW;  // SArray<SBlockIdx>
+
   // for del file
   SDelFReader* pDelFReader;
   SDelFWriter* pDelFWriter;
@@ -460,6 +461,7 @@ static int32_t tsdbSnapWriteTableDataEnd(STsdbSnapWriter* pWrite) {
   return code;
 }
 
+#if 0
 static int32_t tsdbSnapWriteTableData(STsdbSnapWriter* pWriter, uint8_t* pData, uint32_t nData) {
   int32_t code = 0;
   TABLEID id = {0};  // TODO
@@ -556,6 +558,38 @@ _err:
   tsdbError("vgId:%d tsdb snapshot write table data failed since %s", TD_VID(pWriter->pTsdb->pVnode), tstrerror(code));
   return code;
 }
+#endif
+
+static int32_t tsdbSnapWriteDataImpl(STsdbSnapWriter* pWriter, TABLEID id) {
+  int32_t     code = 0;
+  SBlockData* pBlockData = &pWriter->bData;
+
+  if (pWriter->pDataFReader == NULL) {
+    // no old data
+
+    // end last table data commit if id not same
+    if (pWriter->pBlockIdxW) {
+      int32_t c = tTABLEIDCmprFn(pWriter->pBlockIdx, &id);
+      if (c < 0) {
+        // commit last table data and reset (todo)
+        pWriter->pBlockIdxW = NULL;
+      } else if (c > 0) {
+        ASSERT(0);
+      }
+    }
+
+    // start a new table data if need
+    if (pWriter->pBlockIdxW == NULL) {
+      pWriter->pBlockIdxW = &pWriter->blockIdx;
+      pWriter->pBlockIdxW->suid = id.suid;
+      pWriter->pBlockIdxW->uid = id.uid;
+    }
+
+  } else {
+  }
+
+  return code;
+}
 
 static int32_t tsdbSnapWriteData(STsdbSnapWriter* pWriter, uint8_t* pData, uint32_t nData) {
   int32_t       code = 0;
@@ -630,7 +664,8 @@ static int32_t tsdbSnapWriteData(STsdbSnapWriter* pWriter, uint8_t* pData, uint3
     tBlockDataReset(&pWriter->bDataW);
   }
 
-  // write data block (todo)
+  code = tsdbSnapWriteDataImpl(pWriter, id);
+  if (code) goto _err;
 
   tsdbInfo("vgId:%d vnode snapshot tsdb write data, fid:%d suid:%" PRId64 " uid:%" PRId64 " nRow:%d",
            TD_VID(pTsdb->pVnode), fid, id.suid, id.suid, pBlockData->nRow);
diff --git a/source/dnode/vnode/src/tsdb/tsdbUtil.c b/source/dnode/vnode/src/tsdb/tsdbUtil.c
index 7667127fc9f44c6d6a2af83c181872876cf7d520..be1b848d9632137f0b40d11013c25a8c7c0d9e90 100644
--- a/source/dnode/vnode/src/tsdb/tsdbUtil.c
+++ b/source/dnode/vnode/src/tsdb/tsdbUtil.c
@@ -189,25 +189,12 @@ static FORCE_INLINE int32_t tGetTSDBKEY(uint8_t *p, TSDBKEY *pKey) {
 }
 
 // SBlockIdx ======================================================
-void tBlockIdxReset(SBlockIdx *pBlockIdx) {
-  pBlockIdx->minKey = TSKEY_MAX;
-  pBlockIdx->maxKey = TSKEY_MIN;
-  pBlockIdx->minVersion = VERSION_MAX;
-  pBlockIdx->maxVersion = VERSION_MIN;
-  pBlockIdx->offset = -1;
-  pBlockIdx->size = -1;
-}
-
 int32_t tPutBlockIdx(uint8_t *p, void *ph) {
   int32_t    n = 0;
   SBlockIdx *pBlockIdx = (SBlockIdx *)ph;
 
   n += tPutI64(p ? p + n : p, pBlockIdx->suid);
   n += tPutI64(p ? p + n : p, pBlockIdx->uid);
-  n += tPutI64(p ? p + n : p, pBlockIdx->minKey);
-  n += tPutI64(p ? p + n : p, pBlockIdx->maxKey);
-  n += tPutI64v(p ? p + n : p, pBlockIdx->minVersion);
-  n += tPutI64v(p ? p + n : p, pBlockIdx->maxVersion);
   n += tPutI64v(p ? p + n : p, pBlockIdx->offset);
   n += tPutI64v(p ? p + n : p, pBlockIdx->size);
 
@@ -220,10 +207,6 @@ int32_t tGetBlockIdx(uint8_t *p, void *ph) {
 
   n += tGetI64(p + n, &pBlockIdx->suid);
   n += tGetI64(p + n, &pBlockIdx->uid);
-  n += tGetI64(p + n, &pBlockIdx->minKey);
-  n += tGetI64(p + n, &pBlockIdx->maxKey);
-  n += tGetI64v(p + n, &pBlockIdx->minVersion);
-  n += tGetI64v(p + n, &pBlockIdx->maxVersion);
   n += tGetI64v(p + n, &pBlockIdx->offset);
   n += tGetI64v(p + n, &pBlockIdx->size);