diff --git a/source/dnode/vnode/src/inc/tsdb.h b/source/dnode/vnode/src/inc/tsdb.h
index 4c7dbd0a45..32037cbf19 100644
--- a/source/dnode/vnode/src/inc/tsdb.h
+++ b/source/dnode/vnode/src/inc/tsdb.h
@@ -230,16 +230,12 @@ int32_t tsdbUpdateDFileSetHeader(SDataFWriter *pWriter);
 int32_t tsdbWriteBlockIdx(SDataFWriter *pWriter, SArray *aBlockIdx, uint8_t **ppBuf);
 int32_t tsdbWriteBlock(SDataFWriter *pWriter, SMapData *pMapData, uint8_t **ppBuf, SBlockIdx *pBlockIdx);
 int32_t tsdbWriteBlockL(SDataFWriter *pWriter, SArray *aBlockL, uint8_t **ppBuf);
-int32_t tsdbWriteBlockData(SDataFWriter *pWriter, SBlockData *pBlockData, uint8_t **ppBuf1, uint8_t **ppBuf2,
-                           SBlockIdx *pBlockIdx, SBlock *pBlock, int8_t cmprAlg);
-
-int32_t tsdbDFileSetCopy(STsdb *pTsdb, SDFileSet *pSetFrom, SDFileSet *pSetTo);
-
-/* new */
 int32_t tsdbWriteDataBlock(SDataFWriter *pWriter, SBlockData *pBlockData, SBlock *pBlock, uint8_t **ppBuf1,
                            uint8_t **ppBuf2, int8_t cmprAlg);
 int32_t tsdbWriteLastBlock(SDataFWriter *pWriter, SBlockData *pBlockData, SBlockL *pBlockL, uint8_t **ppBuf1,
                            uint8_t **ppBuf2, int8_t cmprAlg);
+
+int32_t tsdbDFileSetCopy(STsdb *pTsdb, SDFileSet *pSetFrom, SDFileSet *pSetTo);
 // SDataFReader
 int32_t tsdbDataFReaderOpen(SDataFReader **ppReader, STsdb *pTsdb, SDFileSet *pSet);
 int32_t tsdbDataFReaderClose(SDataFReader **ppReader);
@@ -251,8 +247,6 @@ int32_t tsdbReadColData(SDataFReader *pReader, SBlockIdx *pBlockIdx, SBlock *pBl
 int32_t tsdbReadBlockData(SDataFReader *pReader, SBlockIdx *pBlockIdx, SBlock *pBlock, SBlockData *pBlockData,
                           uint8_t **ppBuf1, uint8_t **ppBuf2);
 int32_t tsdbReadBlockSma(SDataFReader *pReader, SBlock *pBlock, SArray *aColumnDataAgg, uint8_t **ppBuf);
-
-/* new */
 int32_t tsdbReadDataBlock(SDataFReader *pReader, SBlock *pBlock, SBlockData *pBlockData, uint8_t **ppBuf1,
                           uint8_t **ppBuf2);
 int32_t tsdbReadLastBlock(SDataFReader *pReader, SBlockL *pBlockL, SBlockData *pBlockData, uint8_t **ppBuf1,
@@ -401,12 +395,12 @@ typedef struct {
   int16_t cid;
   int8_t  type;
   int8_t  smaOn;
-  int8_t  flag;  // HAS_NONE|HAS_NULL|HAS_VALUE
-  int32_t offset;
+  int8_t  flag;      // HAS_NONE|HAS_NULL|HAS_VALUE
+  int32_t szOrigin;  // original column value size (only save for variant data type)
   int32_t szBitmap;  // bitmap size
   int32_t szOffset;  // size of offset, only for variant-length data type
   int32_t szValue;   // compressed column value size
-  int32_t szOrigin;  // original column value size (only save for variant data type)
+  int32_t offset;
 } SBlockCol;
 
 typedef struct {
@@ -427,7 +421,6 @@ struct SBlock {
   int64_t   minVersion;
   int64_t   maxVersion;
   int32_t   nRow;
-  int8_t    last;
   int8_t    hasDup;
   int8_t    nSubBlock;
   SSubBlock aSubBlock[TSDB_MAX_SUBBLOCKS];
@@ -435,26 +428,18 @@ struct SBlock {
 
 struct SBlockL {
   int64_t suid;
-  struct {
-    int64_t uid;
-    int64_t version;
-    TSKEY   ts;
-  } minKey;
-  struct {
-    int64_t uid;
-    int64_t version;
-    TSKEY   ts;
-  } maxKey;
+  int64_t minUid;
+  int64_t maxUid;
   int64_t minVer;
   int64_t maxVer;
   int32_t nRow;
-  int8_t  cmprAlg;
   int64_t offset;
-  int32_t szBlock;
+  int8_t  cmprAlg;
   int32_t szBlockCol;
   int32_t szUid;
   int32_t szVer;
   int32_t szTSKEY;
+  int32_t szBlock;
 };
 
 struct SColData {
diff --git a/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c b/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c
index 73bac77e6d..2776ac559e 100644
--- a/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c
+++ b/source/dnode/vnode/src/tsdb/tsdbReaderWriter.c
@@ -1765,91 +1765,56 @@ static void tsdbUpdateBlockInfo(SBlockData *pBlockData, SBlock *pBlock) {
   pBlock->nRow += pBlockData->nRow;
 }
 
-static int32_t tsdbWriteBlockDataKey(SSubBlock *pSubBlock, SBlockData *pBlockData, uint8_t **ppBuf1, int64_t *nDataP,
-                                     uint8_t **ppBuf2) {
+static int32_t tsdbWriteDataArray(uint8_t *aData, int32_t nEle, int8_t type, int8_t cmprAlg, int32_t *rSize,
+                                  uint8_t **ppBuf1, int64_t nBuf1, uint8_t **ppBuf2) {
   int32_t code = 0;
-  int64_t size;
-  int64_t tsize;
+  int32_t size;
 
-  if (pSubBlock->cmprAlg == NO_COMPRESSION) {
-    pSubBlock->szVersion = sizeof(int64_t) * pSubBlock->nRow;
-    pSubBlock->szTSKEY = sizeof(TSKEY) * pSubBlock->nRow;
-
-    code = tRealloc(ppBuf1, *nDataP + pSubBlock->szVersion + pSubBlock->szTSKEY + sizeof(TSCKSUM));
-    if (code) goto _err;
-
-    // VERSION
-    memcpy(*ppBuf1 + *nDataP, pBlockData->aVersion, pSubBlock->szVersion);
-
-    // TSKEY
-    memcpy(*ppBuf1 + *nDataP + pSubBlock->szVersion, pBlockData->aTSKEY, pSubBlock->szTSKEY);
+  if (IS_VAR_DATA_TYPE(type)) {
+    size = nEle;
   } else {
-    size = (sizeof(int64_t) + sizeof(TSKEY)) * pSubBlock->nRow + COMP_OVERFLOW_BYTES * 2;
-
-    code = tRealloc(ppBuf1, *nDataP + size + sizeof(TSCKSUM));
-    if (code) goto _err;
-
-    tsize = sizeof(int64_t) * pSubBlock->nRow + COMP_OVERFLOW_BYTES;
-    if (pSubBlock->cmprAlg == TWO_STAGE_COMP) {
-      code = tRealloc(ppBuf2, tsize);
-      if (code) goto _err;
-    }
-
-    // VERSION
-    pSubBlock->szVersion =
-        tsCompressBigint((char *)pBlockData->aVersion, sizeof(int64_t) * pBlockData->nRow, pBlockData->nRow,
-                         *ppBuf1 + *nDataP, size, pSubBlock->cmprAlg, *ppBuf2, tsize);
-    if (pSubBlock->szVersion <= 0) {
-      code = TSDB_CODE_COMPRESS_ERROR;
-      goto _err;
-    }
-
-    // TSKEY
-    pSubBlock->szTSKEY = tsCompressTimestamp((char *)pBlockData->aTSKEY, sizeof(TSKEY) * pBlockData->nRow,
-                                             pBlockData->nRow, *ppBuf1 + *nDataP + pSubBlock->szVersion,
-                                             size - pSubBlock->szVersion, pSubBlock->cmprAlg, *ppBuf2, tsize);
-    if (pSubBlock->szTSKEY <= 0) {
-      code = TSDB_CODE_COMPRESS_ERROR;
-      goto _err;
-    }
-
-    ASSERT(pSubBlock->szVersion + pSubBlock->szTSKEY <= size);
+    size = tDataTypes[type].bytes * nEle;
   }
 
-  // checksum
-  size = pSubBlock->szVersion + pSubBlock->szTSKEY + sizeof(TSCKSUM);
-  taosCalcChecksumAppend(0, *ppBuf1 + *nDataP, size);
+  if (cmprAlg == NO_COMPRESSION) {
+    code = tRealloc(ppBuf1, nBuf1 + size);
+    if (code) goto _exit;
 
-  *nDataP += size;
-  return code;
+    memcpy(*ppBuf1 + nBuf1, aData, size);
+    *rSize = size;
+  } else {
+    code = tRealloc(ppBuf1, size + COMP_OVERFLOW_BYTES);
+    if (code) goto _exit;
 
-_err:
+    if (cmprAlg == TWO_STAGE_COMP) {
+      code = tRealloc(ppBuf2, size + COMP_OVERFLOW_BYTES);
+      if (code) goto _exit;
+    }
+
+    int32_t n = tDataTypes[type].compFunc(aData, tDataTypes[type].bytes * nEle, nEle, *ppBuf1 + nBuf1,
+                                          size + COMP_OVERFLOW_BYTES, cmprAlg, *ppBuf2, size + COMP_OVERFLOW_BYTES);
+    if (n <= 0) {
+      code = TSDB_CODE_COMPRESS_ERROR;
+      goto _exit;
+    }
+    *rSize = n;
+  }
+
+_exit:
   return code;
 }
 
-static int32_t tsdbWriteColData(SColData *pColData, SBlockCol *pBlockCol, SSubBlock *pSubBlock, uint8_t **ppBuf1,
-                                int64_t *nDataP, uint8_t **ppBuf2) {
+static int32_t tsdbWriteColData(SColData *pColData, SBlockCol *pBlockCol, int8_t cmprAlg, uint8_t **ppBuf1,
+                                int64_t nBuf1, uint8_t **ppBuf2) {
   int32_t code = 0;
   int64_t size;
   int64_t n = 0;
 
   // BITMAP
   if (pColData->flag != HAS_VALUE) {
-    size = BIT2_SIZE(pColData->nVal) + COMP_OVERFLOW_BYTES;
-
-    code = tRealloc(ppBuf1, *nDataP + n + size);
+    code = tsdbWriteDataArray(pColData->pBitMap, BIT2_SIZE(pColData->nVal), TSDB_DATA_TYPE_TINYINT, cmprAlg,
+                              &pBlockCol->szBitmap, ppBuf1, nBuf1 + n, ppBuf2);
     if (code) goto _err;
-
-    code = tRealloc(ppBuf2, size);
-    if (code) goto _err;
-
-    pBlockCol->szBitmap =
-        tsCompressTinyint((char *)pColData->pBitMap, BIT2_SIZE(pColData->nVal), BIT2_SIZE(pColData->nVal),
-                          *ppBuf1 + *nDataP + n, size, TWO_STAGE_COMP, *ppBuf2, size);
-    if (pBlockCol->szBitmap <= 0) {
-      code = TSDB_CODE_COMPRESS_ERROR;
-      goto _err;
-    }
   } else {
     pBlockCol->szBitmap = 0;
   }
@@ -1857,60 +1822,29 @@ static int32_t tsdbWriteColData(SColData *pColData, SBlockCol *pBlockCol, SSubBl
 
   // OFFSET
   if (IS_VAR_DATA_TYPE(pColData->type)) {
-    size = sizeof(int32_t) * pColData->nVal + COMP_OVERFLOW_BYTES;
-
-    code = tRealloc(ppBuf1, *nDataP + n + size);
+    code = tsdbWriteDataArray((uint8_t *)pColData->aOffset, pColData->nVal, TSDB_DATA_TYPE_INT, cmprAlg,
+                              &pBlockCol->szOffset, ppBuf1, nBuf1 + n, ppBuf2);
     if (code) goto _err;
-
-    code = tRealloc(ppBuf2, size);
-    if (code) goto _err;
-
-    pBlockCol->szOffset = tsCompressInt((char *)pColData->aOffset, sizeof(int32_t) * pColData->nVal, pColData->nVal,
-                                        *ppBuf1 + *nDataP + n, size, TWO_STAGE_COMP, *ppBuf2, size);
-    if (pBlockCol->szOffset <= 0) {
-      code = TSDB_CODE_COMPRESS_ERROR;
-      goto _err;
-    }
   } else {
     pBlockCol->szOffset = 0;
   }
   n += pBlockCol->szOffset;
 
   // VALUE
-  if (pSubBlock->cmprAlg == NO_COMPRESSION) {
-    pBlockCol->szValue = pColData->nData;
-
-    code = tRealloc(ppBuf1, *nDataP + n + pBlockCol->szValue + sizeof(TSCKSUM));
+  if (pColData->flag != (HAS_NULL | HAS_NONE)) {
+    code = tsdbWriteDataArray(pColData->pData, pColData->nData, pColData->type, cmprAlg, &pBlockCol->szValue, ppBuf1,
+                              nBuf1 + n, ppBuf2);
     if (code) goto _err;
-
-    memcpy(*ppBuf1 + *nDataP + n, pColData->pData, pBlockCol->szValue);
   } else {
-    size = pColData->nData + COMP_OVERFLOW_BYTES;
-
-    code = tRealloc(ppBuf1, *nDataP + n + size + sizeof(TSCKSUM));
-    if (code) goto _err;
-
-    if (pSubBlock->cmprAlg == TWO_STAGE_COMP) {
-      code = tRealloc(ppBuf2, size);
-      if (code) goto _err;
-    }
-
-    pBlockCol->szValue =
-        tDataTypes[pColData->type].compFunc((char *)pColData->pData, pColData->nData, pColData->nVal,
-                                            *ppBuf1 + *nDataP + n, size, pSubBlock->cmprAlg, *ppBuf2, size);
-    if (pBlockCol->szValue <= 0) {
-      code = TSDB_CODE_COMPRESS_ERROR;
-      goto _err;
-    }
+    pBlockCol->szValue = 0;
   }
   n += pBlockCol->szValue;
-  pBlockCol->szOrigin = pColData->nData;
 
   // checksum
   n += sizeof(TSCKSUM);
-  taosCalcChecksumAppend(0, *ppBuf1 + *nDataP, n);
-
-  *nDataP += n;
+  code = tRealloc(ppBuf1, nBuf1 + n);
+  if (code) goto _err;
+  taosCalcChecksumAppend(0, *ppBuf1 + nBuf1, n);
 
   return code;
 
@@ -1918,20 +1852,20 @@ _err:
   return code;
 }
 
-static int32_t tsdbWriteBlockDataImpl(TdFilePtr pFD, SSubBlock *pSubBlock, SBlockDataHdr hdr, SArray *aBlockCol,
-                                      uint8_t *pData, int64_t nData, uint8_t **ppBuf) {
+static int32_t tsdbWriteBlockDataImpl(TdFilePtr pFD, SBlockDataHdr hdr, SArray *aBlockCol, uint8_t *pData,
+                                      int64_t nData, uint8_t **ppBuf, int32_t *szBlockCol) {
   int32_t code = 0;
   int32_t nBlockCol = taosArrayGetSize(aBlockCol);
   int64_t size;
   int64_t n;
 
   // HDR + SArray<SBlockCol>
-  pSubBlock->szBlockCol = sizeof(hdr);
+  *szBlockCol = sizeof(hdr);
   for (int32_t iBlockCol = 0; iBlockCol < nBlockCol; iBlockCol++) {
-    pSubBlock->szBlockCol += tPutBlockCol(NULL, taosArrayGet(aBlockCol, iBlockCol));
+    (*szBlockCol) += tPutBlockCol(NULL, taosArrayGet(aBlockCol, iBlockCol));
   }
 
-  code = tRealloc(ppBuf, pSubBlock->szBlockCol + sizeof(TSCKSUM));
+  code = tRealloc(ppBuf, *szBlockCol + sizeof(TSCKSUM));
   if (code) goto _err;
 
   n = 0;
@@ -1940,11 +1874,11 @@ static int32_t tsdbWriteBlockDataImpl(TdFilePtr pFD, SSubBlock *pSubBlock, SBloc
   for (int32_t iBlockCol = 0; iBlockCol < nBlockCol; iBlockCol++) {
     n += tPutBlockCol(*ppBuf + n, taosArrayGet(aBlockCol, iBlockCol));
   }
-  taosCalcChecksumAppend(0, *ppBuf, pSubBlock->szBlockCol + sizeof(TSCKSUM));
+  taosCalcChecksumAppend(0, *ppBuf, *szBlockCol + sizeof(TSCKSUM));
 
-  ASSERT(n == pSubBlock->szBlockCol);
+  ASSERT(n == *szBlockCol);
 
-  n = taosWriteFile(pFD, *ppBuf, pSubBlock->szBlockCol + sizeof(TSCKSUM));
+  n = taosWriteFile(pFD, *ppBuf, *szBlockCol + sizeof(TSCKSUM));
   if (n < 0) {
     code = TAOS_SYSTEM_ERROR(errno);
     goto _err;
@@ -2007,42 +1941,49 @@ _err:
   return code;
 }
 
-int32_t tsdbWriteBlockData(SDataFWriter *pWriter, SBlockData *pBlockData, uint8_t **ppBuf1, uint8_t **ppBuf2,
-                           SBlockIdx *pBlockIdx, SBlock *pBlock, int8_t cmprAlg) {
-  int32_t       code = 0;
-  SSubBlock    *pSubBlock = &pBlock->aSubBlock[pBlock->nSubBlock++];
-  SBlockCol     blockCol;
-  SBlockCol    *pBlockCol = &blockCol;
-  int64_t       n;
-  TdFilePtr     pFileFD = pBlock->last ? pWriter->pLastFD : pWriter->pDataFD;
-  SBlockDataHdr hdr = {.delimiter = TSDB_FILE_DLMT, .suid = pBlockIdx->suid, .uid = pBlockIdx->uid};
-  uint8_t      *p;
-  int64_t       nData;
-  uint8_t      *pBuf1 = NULL;
-  uint8_t      *pBuf2 = NULL;
-  SArray       *aBlockCol = NULL;
+int32_t tsdbWriteDataBlock(SDataFWriter *pWriter, SBlockData *pBlockData, SBlock *pBlock, uint8_t **ppBuf1,
+                           uint8_t **ppBuf2, int8_t cmprAlg) {
+  int32_t code = 0;
+
+  ASSERT((pBlockData->suid && pBlockData->uid) || (!pBlockData->suid && pBlockData->uid));
+
+  uint8_t *pBuf1 = NULL;
+  uint8_t *pBuf2 = NULL;
 
   if (!ppBuf1) ppBuf1 = &pBuf1;
   if (!ppBuf2) ppBuf2 = &pBuf2;
 
   tsdbUpdateBlockInfo(pBlockData, pBlock);
 
+  SSubBlock *pSubBlock = &pBlock->aSubBlock[pBlock->nSubBlock++];
+
   pSubBlock->nRow = pBlockData->nRow;
   pSubBlock->cmprAlg = cmprAlg;
-  if (pBlock->last) {
-    pSubBlock->offset = pWriter->fLast.size;
-  } else {
-    pSubBlock->offset = pWriter->fData.size;
-  }
+  pSubBlock->offset = pWriter->fData.size;
 
   // ======================= BLOCK DATA =======================
-  // TSDBKEY
-  nData = 0;
-  code = tsdbWriteBlockDataKey(pSubBlock, pBlockData, ppBuf1, &nData, ppBuf2);
+  int64_t nBuf1 = 0;
+
+  // VERSION
+  code = tsdbWriteDataArray((uint8_t *)pBlockData->aVersion, pBlockData->nRow, TSDB_DATA_TYPE_BIGINT, cmprAlg,
+                            &pSubBlock->szVersion, ppBuf1, nBuf1, ppBuf2);
   if (code) goto _err;
+  nBuf1 += pSubBlock->szVersion;
+
+  // TSKEY
+  code = tsdbWriteDataArray((uint8_t *)pBlockData->aTSKEY, pBlockData->nRow, TSDB_DATA_TYPE_TIMESTAMP, cmprAlg,
+                            &pSubBlock->szTSKEY, ppBuf1, nBuf1, ppBuf2);
+  if (code) goto _err;
+  nBuf1 += pSubBlock->szTSKEY;
+
+  // checksum
+  nBuf1 += sizeof(TSCKSUM);
+  code = tRealloc(ppBuf1, nBuf1);
+  if (code) goto _err;
+  taosCalcChecksumAppend(0, *ppBuf1, nBuf1);
 
   // COLUMNS
-  aBlockCol = taosArrayInit(taosArrayGetSize(pBlockData->aIdx), sizeof(SBlockCol));
+  SArray *aBlockCol = taosArrayInit(taosArrayGetSize(pBlockData->aIdx), sizeof(SBlockCol));
   if (aBlockCol == NULL) {
     code = TSDB_CODE_OUT_OF_MEMORY;
     goto _err;
@@ -2050,46 +1991,46 @@ int32_t tsdbWriteBlockData(SDataFWriter *pWriter, SBlockData *pBlockData, uint8_
   int32_t offset = 0;
   for (int32_t iCol = 0; iCol < taosArrayGetSize(pBlockData->aIdx); iCol++) {
     SColData *pColData = tBlockDataGetColDataByIdx(pBlockData, iCol);
+    SBlockCol blockCol = {0};
 
     ASSERT(pColData->flag);
 
     if (pColData->flag == HAS_NONE) continue;
 
-    pBlockCol->cid = pColData->cid;
-    pBlockCol->type = pColData->type;
-    pBlockCol->smaOn = pColData->smaOn;
-    pBlockCol->flag = pColData->flag;
+    blockCol.cid = pColData->cid;
+    blockCol.type = pColData->type;
+    blockCol.smaOn = pColData->smaOn;
+    blockCol.flag = pColData->flag;
+    blockCol.szOrigin = pColData->nData;
 
     if (pColData->flag != HAS_NULL) {
-      code = tsdbWriteColData(pColData, pBlockCol, pSubBlock, ppBuf1, &nData, ppBuf2);
+      code = tsdbWriteColData(pColData, &blockCol, cmprAlg, ppBuf1, nBuf1, ppBuf2);
       if (code) goto _err;
 
-      pBlockCol->offset = offset;
-      offset = offset + pBlockCol->szBitmap + pBlockCol->szOffset + pBlockCol->szValue + sizeof(TSCKSUM);
+      blockCol.offset = offset;
+      offset = offset + blockCol.szBitmap + blockCol.szOffset + blockCol.szValue + sizeof(TSCKSUM);
+      nBuf1 = nBuf1 + blockCol.szBitmap + blockCol.szOffset + blockCol.szValue + sizeof(TSCKSUM);
     }
 
-    if (taosArrayPush(aBlockCol, pBlockCol) == NULL) {
+    if (taosArrayPush(aBlockCol, &blockCol) == NULL) {
       code = TSDB_CODE_OUT_OF_MEMORY;
       goto _err;
     }
   }
 
   // write
-  code = tsdbWriteBlockDataImpl(pFileFD, pSubBlock, hdr, aBlockCol, *ppBuf1, nData, ppBuf2);
+  SBlockDataHdr hdr = {.delimiter = TSDB_FILE_DLMT, .suid = pBlockData->suid, .uid = pBlockData->uid};
+  code = tsdbWriteBlockDataImpl(pWriter->pDataFD, hdr, aBlockCol, *ppBuf1, nBuf1, ppBuf2, &pSubBlock->szBlockCol);
   if (code) goto _err;
 
-  pSubBlock->szBlock = pSubBlock->szBlockCol + sizeof(TSCKSUM) + nData;
-  if (pBlock->last) {
-    pWriter->fLast.size += pSubBlock->szBlock;
-  } else {
-    pWriter->fData.size += pSubBlock->szBlock;
-  }
+  pSubBlock->szBlock = pSubBlock->szBlockCol + sizeof(TSCKSUM) + nBuf1;
+  pWriter->fData.size += pSubBlock->szBlock;
 
   // ======================= BLOCK SMA =======================
   pSubBlock->sOffset = 0;
   pSubBlock->nSma = 0;
 
-  if (pBlock->nSubBlock > 1 || pBlock->last || pBlock->hasDup) goto _exit;
+  if (pBlock->nSubBlock > 1 || pBlock->hasDup) goto _exit;
 
   code = tsdbWriteBlockSma(pWriter->pSmaFD, pBlockData, pSubBlock, ppBuf1);
   if (code) goto _err;
@@ -2113,17 +2054,113 @@ _err:
   return code;
 }
 
-int32_t tsdbWriteDataBlock(SDataFWriter *pWriter, SBlockData *pBlockData, SBlock *pBlock, uint8_t **ppBuf1,
-                           uint8_t **ppBuf2, int8_t cmprAlg) {
-  int32_t code = 0;
-  // TODO
-  return code;
-}
-
 int32_t tsdbWriteLastBlock(SDataFWriter *pWriter, SBlockData *pBlockData, SBlockL *pBlockL, uint8_t **ppBuf1,
                            uint8_t **ppBuf2, int8_t cmprAlg) {
   int32_t code = 0;
-  // TODO
+
+  ASSERT((pBlockData->suid && !pBlockData->uid) || (!pBlockData->suid && pBlockData->uid));
+
+  uint8_t *pBuf1 = NULL;
+  uint8_t *pBuf2 = NULL;
+
+  if (!ppBuf1) ppBuf1 = &pBuf1;
+  if (!ppBuf2) ppBuf2 = &pBuf2;
+
+  pBlockL->suid = pBlockData->suid;
+  if (pBlockData->uid) {
+    pBlockL->maxUid = pBlockL->minUid = pBlockData->uid;
+  } else {
+    pBlockL->minUid = pBlockData->aUid[0];
+    pBlockL->maxUid = pBlockData->aUid[pBlockData->nRow - 1];
+  }
+  pBlockL->nRow = pBlockData->nRow;
+  pBlockL->offset = pWriter->fLast.size;
+  pBlockL->cmprAlg = cmprAlg;
+  pBlockL->minVer = VERSION_MAX;
+  pBlockL->maxVer = VERSION_MIN;
+  for (int32_t iRow = 0; iRow < pBlockData->nRow; iRow++) {
+    pBlockL->minVer = TMIN(pBlockL->minVer, pBlockData->aVersion[iRow]);
+    pBlockL->maxVer = TMAX(pBlockL->maxVer, pBlockData->aVersion[iRow]);
+  }
+
+  // ======================= BLOCK DATA =======================
+  int64_t nBuf1 = 0;
+
+  // UID
+  if (pBlockData->uid == 0) {
+    code = tsdbWriteDataArray((uint8_t *)pBlockData->aUid, pBlockData->nRow, TSDB_DATA_TYPE_BIGINT, cmprAlg,
+                              &pBlockL->szUid, ppBuf1, nBuf1, ppBuf2);
+    if (code) goto _err;
+  } else {
+    pBlockL->szUid = 0;
+  }
+  nBuf1 += pBlockL->szUid;
+
+  // VERSION
+  code = tsdbWriteDataArray((uint8_t *)pBlockData->aVersion, pBlockData->nRow, TSDB_DATA_TYPE_BIGINT, cmprAlg,
+                            &pBlockL->szVer, ppBuf1, nBuf1, ppBuf2);
+  if (code) goto _err;
+  nBuf1 += pBlockL->szVer;
+
+  // TSKEY
+  code = tsdbWriteDataArray((uint8_t *)pBlockData->aTSKEY, pBlockData->nRow, TSDB_DATA_TYPE_TIMESTAMP, cmprAlg,
+                            &pBlockL->szTSKEY, ppBuf1, nBuf1, ppBuf2);
+  if (code) goto _err;
+  nBuf1 += pBlockL->szTSKEY;
+
+  // checksum
+  nBuf1 += sizeof(TSCKSUM);
+  code = tRealloc(ppBuf1, nBuf1);
+  if (code) goto _err;
+  taosCalcChecksumAppend(0, *ppBuf1, nBuf1);
+
+  // COLUMNS
+  SArray *aBlockCol = taosArrayInit(taosArrayGetSize(pBlockData->aIdx), sizeof(SBlockCol));
+  if (aBlockCol == NULL) {
+    code = TSDB_CODE_OUT_OF_MEMORY;
+    goto _err;
+  }
+  int32_t offset = 0;
+  for (int32_t iCol = 0; iCol < taosArrayGetSize(pBlockData->aIdx); iCol++) {
+    SColData *pColData = tBlockDataGetColDataByIdx(pBlockData, iCol);
+    SBlockCol blockCol = {0};
+
+    ASSERT(pColData->flag);
+
+    if (pColData->flag == HAS_NONE) continue;
+
+    blockCol.cid = pColData->cid;
+    blockCol.type = pColData->type;
+    blockCol.smaOn = pColData->smaOn;
+    blockCol.flag = pColData->flag;
+    blockCol.szOrigin = pColData->nData;
+
+    if (pColData->flag != HAS_NULL) {
+      code = tsdbWriteColData(pColData, &blockCol, cmprAlg, ppBuf1, nBuf1, ppBuf2);
+      if (code) goto _err;
+
+      blockCol.offset = offset;
+      offset = offset + blockCol.szBitmap + blockCol.szOffset + blockCol.szValue + sizeof(TSCKSUM);
+      nBuf1 = nBuf1 + blockCol.szBitmap + blockCol.szOffset + blockCol.szValue + sizeof(TSCKSUM);
+    }
+
+    if (taosArrayPush(aBlockCol, &blockCol) == NULL) {
+      code = TSDB_CODE_OUT_OF_MEMORY;
+      goto _err;
+    }
+  }
+
+  // write
+  SBlockDataHdr hdr = {.delimiter = TSDB_FILE_DLMT, .suid = pBlockData->suid, .uid = pBlockData->uid};
+  code = tsdbWriteBlockDataImpl(pWriter->pLastFD, hdr, aBlockCol, *ppBuf1, nBuf1, ppBuf2, &pBlockL->szBlockCol);
+  if (code) goto _err;
+
+  pBlockL->szBlock = pBlockL->szBlockCol + sizeof(TSCKSUM) + nBuf1;
+  pWriter->fLast.size += pBlockL->szBlock;
+
+  return code;
+
+_err:
   return code;
 }
 
diff --git a/source/dnode/vnode/src/tsdb/tsdbUtil.c b/source/dnode/vnode/src/tsdb/tsdbUtil.c
index 7beac23912..c17a7f4a09 100644
--- a/source/dnode/vnode/src/tsdb/tsdbUtil.c
+++ b/source/dnode/vnode/src/tsdb/tsdbUtil.c
@@ -230,7 +230,6 @@ int32_t tPutBlock(uint8_t *p, void *ph) {
   n += tPutI64v(p ? p + n : p, pBlock->minVersion);
   n += tPutI64v(p ? p + n : p, pBlock->maxVersion);
   n += tPutI32v(p ? p + n : p, pBlock->nRow);
-  n += tPutI8(p ? p + n : p, pBlock->last);
   n += tPutI8(p ? p + n : p, pBlock->hasDup);
   n += tPutI8(p ? p + n : p, pBlock->nSubBlock);
   for (int8_t iSubBlock = 0; iSubBlock < pBlock->nSubBlock; iSubBlock++) {
@@ -257,7 +256,6 @@ int32_t tGetBlock(uint8_t *p, void *ph) {
   n += tGetI64v(p + n, &pBlock->minVersion);
   n += tGetI64v(p + n, &pBlock->maxVersion);
   n += tGetI32v(p + n, &pBlock->nRow);
-  n += tGetI8(p + n, &pBlock->last);
   n += tGetI8(p + n, &pBlock->hasDup);
   n += tGetI8(p + n, &pBlock->nSubBlock);
   for (int8_t iSubBlock = 0; iSubBlock < pBlock->nSubBlock; iSubBlock++) {
@@ -290,7 +288,6 @@ int32_t tBlockCmprFn(const void *p1, const void *p2) {
 
 bool tBlockHasSma(SBlock *pBlock) {
   if (pBlock->nSubBlock > 1) return false;
-  if (pBlock->last) return false;
   if (pBlock->hasDup) return false;
 
   return pBlock->aSubBlock[0].nSma > 0;
@@ -301,22 +298,18 @@ int32_t tPutBlockL(uint8_t *p, void *ph) {
   SBlockL *pBlockL = (SBlockL *)ph;
 
   n += tPutI64(p ? p + n : p, pBlockL->suid);
-  n += tPutI64(p ? p + n : p, pBlockL->minKey.uid);
-  n += tPutI64v(p ? p + n : p, pBlockL->minKey.version);
-  n += tPutI64(p ? p + n : p, pBlockL->minKey.ts);
-  n += tPutI64(p ? p + n : p, pBlockL->maxKey.uid);
-  n += tPutI64v(p ? p + n : p, pBlockL->maxKey.version);
-  n += tPutI64(p ? p + n : p, pBlockL->maxKey.ts);
+  n += tPutI64(p ? p + n : p, pBlockL->minUid);
+  n += tPutI64(p ? p + n : p, pBlockL->maxUid);
   n += tPutI64v(p ? p + n : p, pBlockL->minVer);
   n += tPutI64v(p ? p + n : p, pBlockL->maxVer);
   n += tPutI32v(p ? p + n : p, pBlockL->nRow);
-  n += tPutI8(p ? p + n : p, pBlockL->cmprAlg);
   n += tPutI64v(p ? p + n : p, pBlockL->offset);
-  n += tPutI32v(p ? p + n : p, pBlockL->szBlock);
+  n += tPutI8(p ? p + n : p, pBlockL->cmprAlg);
   n += tPutI32v(p ? p + n : p, pBlockL->szBlockCol);
   n += tPutI32v(p ? p + n : p, pBlockL->szUid);
   n += tPutI32v(p ? p + n : p, pBlockL->szVer);
   n += tPutI32v(p ? p + n : p, pBlockL->szTSKEY);
+  n += tPutI32v(p ? p + n : p, pBlockL->szBlock);
 
   return n;
 }
@@ -326,22 +319,18 @@ int32_t tGetBlockL(uint8_t *p, void *ph) {
   SBlockL *pBlockL = (SBlockL *)ph;
 
   n += tGetI64(p + n, &pBlockL->suid);
-  n += tGetI64(p + n, &pBlockL->minKey.uid);
-  n += tGetI64v(p + n, &pBlockL->minKey.version);
-  n += tGetI64(p + n, &pBlockL->minKey.ts);
-  n += tGetI64(p + n, &pBlockL->maxKey.uid);
-  n += tGetI64v(p + n, &pBlockL->maxKey.version);
-  n += tGetI64(p + n, &pBlockL->maxKey.ts);
+  n += tGetI64(p + n, &pBlockL->minUid);
+  n += tGetI64(p + n, &pBlockL->maxUid);
   n += tGetI64v(p + n, &pBlockL->minVer);
   n += tGetI64v(p + n, &pBlockL->maxVer);
   n += tGetI32v(p + n, &pBlockL->nRow);
-  n += tGetI8(p + n, &pBlockL->cmprAlg);
   n += tGetI64v(p + n, &pBlockL->offset);
-  n += tGetI32v(p + n, &pBlockL->szBlock);
+  n += tGetI8(p + n, &pBlockL->cmprAlg);
   n += tGetI32v(p + n, &pBlockL->szBlockCol);
   n += tGetI32v(p + n, &pBlockL->szUid);
   n += tGetI32v(p + n, &pBlockL->szVer);
   n += tGetI32v(p + n, &pBlockL->szTSKEY);
+  n += tGetI32v(p + n, &pBlockL->szBlock);
 
   return n;
 }