diff --git a/include/util/tarray2.h b/include/util/tarray2.h
index 9c380b5e90..8ac9050fba 100644
--- a/include/util/tarray2.h
+++ b/include/util/tarray2.h
@@ -47,6 +47,7 @@ typedef void (*TArray2Cb)(void *);
 #define TARRAY2_GET_PTR(a, i) ((a)->data + i)
 #define TARRAY2_FIRST(a)      ((a)->data[0])
 #define TARRAY2_LAST(a)       ((a)->data[(a)->size - 1])
+#define TARRAY2_DATA_LEN(a)   ((a)->size * sizeof(typeof((a)->data[0])))
 
 static FORCE_INLINE int32_t tarray2_make_room(  //
     void   *arg,                                // array
@@ -114,9 +115,9 @@ static FORCE_INLINE int32_t tarray2_make_room(  //
     __ret;                                                                                                     \
   })
 
-#define TARRAY2_INSERT_P(a, idx, ep) TARRAY2_INSERT(a, idx, *(ep))
-#define TARRAY2_APPEND(a, e)         TARRAY2_INSERT(a, (a)->size, e)
-#define TARRAY2_APPEND_P(a, ep)      TARRAY2_APPEND(a, *(ep))
+#define TARRAY2_INSERT_PTR(a, idx, ep) TARRAY2_INSERT(a, idx, *(ep))
+#define TARRAY2_APPEND(a, e)           TARRAY2_INSERT(a, (a)->size, e)
+#define TARRAY2_APPEND_PTR(a, ep)      TARRAY2_APPEND(a, *(ep))
 
 // return (TYPE *)
 #define TARRAY2_SEARCH(a, ep, cmp, flag)                                                                     \
diff --git a/source/dnode/vnode/src/tsdb/dev/inc/tsdbDef.h b/source/dnode/vnode/src/tsdb/dev/inc/tsdbDef.h
index 20bf36596f..73a5cb754a 100644
--- a/source/dnode/vnode/src/tsdb/dev/inc/tsdbDef.h
+++ b/source/dnode/vnode/src/tsdb/dev/inc/tsdbDef.h
@@ -23,7 +23,10 @@
 extern "C" {
 #endif
 
-typedef struct SFDataPtr SFDataPtr;
+typedef struct SFDataPtr {
+  int64_t offset;
+  int64_t size;
+} SFDataPtr;
 
 extern int32_t tsdbOpenFile(const char *path, int32_t szPage, int32_t flag, STsdbFD **ppFD);
 extern void    tsdbCloseFile(STsdbFD **ppFD);
@@ -31,11 +34,6 @@ extern int32_t tsdbWriteFile(STsdbFD *pFD, int64_t offset, const uint8_t *pBuf,
 extern int32_t tsdbReadFile(STsdbFD *pFD, int64_t offset, uint8_t *pBuf, int64_t size);
 extern int32_t tsdbFsyncFile(STsdbFD *pFD);
 
-struct SFDataPtr {
-  int64_t offset;
-  int64_t size;
-};
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/dnode/vnode/src/tsdb/dev/inc/tsdbUtil.h b/source/dnode/vnode/src/tsdb/dev/inc/tsdbUtil.h
index 4cd2101dd5..b814af89fb 100644
--- a/source/dnode/vnode/src/tsdb/dev/inc/tsdbUtil.h
+++ b/source/dnode/vnode/src/tsdb/dev/inc/tsdbUtil.h
@@ -38,11 +38,11 @@ typedef union {
 typedef union {
   TARRAY2(int64_t) aData[5];
   struct {
-    TARRAY2(int64_t) aSuid[1];
-    TARRAY2(int64_t) aUid[1];
-    TARRAY2(int64_t) aVer[1];
-    TARRAY2(int64_t) aSkey[1];
-    TARRAY2(int64_t) aEkey[1];
+    TARRAY2(int64_t) suid[1];
+    TARRAY2(int64_t) uid[1];
+    TARRAY2(int64_t) version[1];
+    TARRAY2(int64_t) skey[1];
+    TARRAY2(int64_t) ekey[1];
   };
 } SDelBlock;
 
@@ -55,7 +55,7 @@ typedef struct SDelBlk {
   SFDataPtr dp;
 } SDelBlk;
 
-#define DEL_BLOCK_SIZE(db) TARRAY2_SIZE((db)->aSuid)
+#define DEL_BLOCK_SIZE(db) TARRAY2_SIZE((db)->suid)
 
 int32_t tDelBlockInit(SDelBlock *delBlock);
 int32_t tDelBlockFree(SDelBlock *delBlock);
@@ -97,11 +97,12 @@ typedef union {
 
 typedef struct STbStatisBlk {
   int32_t   numRec;
+  int32_t   size[9];
   TABLEID   minTid;
   TABLEID   maxTid;
   int64_t   minVer;
   int64_t   maxVer;
-  SFDataPtr dp;
+  SFDataPtr dp[1];
 } STbStatisBlk;
 
 #define STATIS_BLOCK_SIZE(db) TARRAY2_SIZE((db)->suid)
@@ -110,8 +111,6 @@ int32_t tStatisBlockInit(STbStatisBlock *statisBlock);
 int32_t tStatisBlockFree(STbStatisBlock *statisBlock);
 int32_t tStatisBlockClear(STbStatisBlock *statisBlock);
 int32_t tStatisBlockPut(STbStatisBlock *statisBlock, const STbStatisRecord *statisRecord);
-int32_t tStatisBlockEncode(STbStatisBlock *statisBlock, void *buf, int32_t size);
-int32_t tStatisBlockDecode(const void *buf, STbStatisBlock *statisBlock);
 
 // other apis
 int32_t tsdbUpdateSkmTb(STsdb *pTsdb, const TABLEID *tbid, SSkmInfo *pSkmTb);
diff --git a/source/dnode/vnode/src/tsdb/dev/tsdbSttFReaderWriter.c b/source/dnode/vnode/src/tsdb/dev/tsdbSttFReaderWriter.c
index 9a08302ef6..71d8b4af74 100644
--- a/source/dnode/vnode/src/tsdb/dev/tsdbSttFReaderWriter.c
+++ b/source/dnode/vnode/src/tsdb/dev/tsdbSttFReaderWriter.c
@@ -305,7 +305,7 @@ static int32_t tsdbSttFileDoWriteTSDataBlock(SSttFileWriter *writer) {
   }
   tBlockDataClear(writer->bData);
 
-  code = TARRAY2_APPEND_P(writer->sttBlkArray, sttBlk);
+  code = TARRAY2_APPEND_PTR(writer->sttBlkArray, sttBlk);
   TSDB_CHECK_CODE(code, lino, _exit);
 
 _exit:
@@ -326,31 +326,31 @@ static int32_t tsdbSttFileDoWriteStatisBlock(SSttFileWriter *writer) {
       .numRec = STATIS_BLOCK_SIZE(writer->sData),
       .minTid = {.suid = TARRAY2_FIRST(writer->sData->suid), .uid = TARRAY2_FIRST(writer->sData->uid)},
       .maxTid = {.suid = TARRAY2_LAST(writer->sData->suid), .uid = TARRAY2_LAST(writer->sData->uid)},
-      // .minVer = TARRAY2_FIRST(writer->sData->aVer),
-      // .maxVer = TARRAY2_FIRST(writer->sData->aVer),
+      .minVer = TARRAY2_FIRST(writer->sData->minVer),
+      .maxVer = TARRAY2_FIRST(writer->sData->maxVer),
   }};
 
-  // statisBlk->minVer = statisBlk->maxVer = statisBlk->maxVer = writer->sData->aData[2][0];
-  // for (int32_t iRow = 1; iRow < writer->sData->nRow; iRow++) {
-  //   if (statisBlk->minVer > writer->sData->aData[2][iRow]) statisBlk->minVer = writer->sData->aData[2][iRow];
-  //   if (statisBlk->maxVer < writer->sData->aData[2][iRow]) statisBlk->maxVer = writer->sData->aData[2][iRow];
-  // }
+  for (int32_t i = 1; i < STATIS_BLOCK_SIZE(writer->sData); i++) {
+    statisBlk->minVer = TMIN(statisBlk->minVer, TARRAY2_GET(writer->sData->minVer, i));
+    statisBlk->maxVer = TMAX(statisBlk->maxVer, TARRAY2_GET(writer->sData->maxVer, i));
+  }
 
-  // statisBlk->dp.offset = writer->file->size;
-  // statisBlk->dp.size = 0;
+  statisBlk->dp->offset = writer->file->size;
+  statisBlk->dp->size = 0;
 
-  // // TODO: add compression here
-  // int64_t tsize = sizeof(int64_t) * writer->sData->nRow;
-  // for (int32_t i = 0; i < ARRAY_SIZE(writer->sData->aData); i++) {
-  //   code = tsdbWriteFile(writer->fd, writer->file->size, (const uint8_t *)writer->sData->aData[i], tsize);
-  //   TSDB_CHECK_CODE(code, lino, _exit);
+  for (int32_t i = 0; i < ARRAY_SIZE(writer->sData->aData); i++) {
+    int32_t size;
+    code = tsdbCmprData((uint8_t *)TARRAY2_DATA(&writer->sData->aData[i]), TARRAY2_DATA_LEN(&writer->sData->aData[i]),
+                        TSDB_DATA_TYPE_BIGINT, TWO_STAGE_COMP, &writer->config->aBuf[0], 0, &size,
+                        &writer->config->aBuf[1]);
+    TSDB_CHECK_CODE(code, lino, _exit);
+    statisBlk->size[i] = size;
+    statisBlk->dp->size += size;
+  }
 
-  //   statisBlk->dp.size += tsize;
-  //   writer->file->size += tsize;
-  // }
   tStatisBlockClear(writer->sData);
 
-  code = TARRAY2_APPEND_P(writer->statisBlkArray, statisBlk);
+  code = TARRAY2_APPEND_PTR(writer->statisBlkArray, statisBlk);
   TSDB_CHECK_CODE(code, lino, _exit);
 
 _exit:
@@ -394,7 +394,7 @@ static int32_t tsdbSttFileDoWriteDelBlock(SSttFileWriter *writer) {
   }
   tDelBlockDestroy(writer->dData);
 
-  code = TARRAY2_APPEND_P(writer->delBlkArray, delBlk);
+  code = TARRAY2_APPEND_PTR(writer->delBlkArray, delBlk);
   TSDB_CHECK_CODE(code, lino, _exit);
 
 _exit:
@@ -723,13 +723,13 @@ int32_t tsdbSttFWriteTSDataBlock(SSttFileWriter *writer, SBlockData *bdata) {
   int32_t code = 0;
   int32_t lino = 0;
 
-  SRowInfo rowInfo;
-  rowInfo.suid = bdata->suid;
+  SRowInfo row[1];
+  row->suid = bdata->suid;
   for (int32_t i = 0; i < bdata->nRow; i++) {
-    rowInfo.uid = bdata->uid ? bdata->uid : bdata->aUid[i];
-    rowInfo.row = tsdbRowFromBlockData(bdata, i);
+    row->uid = bdata->uid ? bdata->uid : bdata->aUid[i];
+    row->row = tsdbRowFromBlockData(bdata, i);
 
-    code = tsdbSttFWriteTSData(writer, &rowInfo);
+    code = tsdbSttFWriteTSData(writer, row);
     TSDB_CHECK_CODE(code, lino, _exit);
   }
 
diff --git a/source/dnode/vnode/src/tsdb/dev/tsdbUtil.c b/source/dnode/vnode/src/tsdb/dev/tsdbUtil.c
index a709b52a4d..fbe88564a2 100644
--- a/source/dnode/vnode/src/tsdb/dev/tsdbUtil.c
+++ b/source/dnode/vnode/src/tsdb/dev/tsdbUtil.c
@@ -85,16 +85,6 @@ int32_t tStatisBlockPut(STbStatisBlock *statisBlock, const STbStatisRecord *stat
   return 0;
 }
 
-int32_t tStatisBlockEncode(STbStatisBlock *statisBlock, void *buf, int32_t size) {
-  // TODO
-  return 0;
-}
-
-int32_t tStatisBlockDecode(const void *buf, STbStatisBlock *statisBlock) {
-  // TODO
-  return 0;
-}
-
 // other apis ----------
 int32_t tsdbUpdateSkmTb(STsdb *pTsdb, const TABLEID *tbid, SSkmInfo *pSkmTb) {
   if (tbid->suid) {