diff --git a/source/dnode/vnode/src/inc/tsdb.h b/source/dnode/vnode/src/inc/tsdb.h
index b41b0ceb0f..1d6f37dabc 100644
--- a/source/dnode/vnode/src/inc/tsdb.h
+++ b/source/dnode/vnode/src/inc/tsdb.h
@@ -163,6 +163,7 @@ void    tBlockDataDestroy(SBlockData *pBlockData);
 int32_t tBlockDataInit(SBlockData *pBlockData, TABLEID *pId, STSchema *pTSchema, int16_t *aCid, int32_t nCid);
 void    tBlockDataReset(SBlockData *pBlockData);
 int32_t tBlockDataAppendRow(SBlockData *pBlockData, TSDBROW *pRow, STSchema *pTSchema, int64_t uid);
+int32_t tBlockDataAppendRowEx(SBlockData *pBlockData, TSDBROW *pRow, STSchema *pTSchema, int64_t uid);
 void    tBlockDataClear(SBlockData *pBlockData);
 void    tBlockDataGetColData(SBlockData *pBlockData, int16_t cid, SColData **ppColData);
 int32_t tCmprBlockData(SBlockData *pBlockData, int8_t cmprAlg, uint8_t **ppOut, int32_t *szOut, uint8_t *aBuf[],
diff --git a/source/dnode/vnode/src/tsdb/tsdbCompact.c b/source/dnode/vnode/src/tsdb/tsdbCompact.c
index 0a27abdbf9..81b42f43e8 100644
--- a/source/dnode/vnode/src/tsdb/tsdbCompact.c
+++ b/source/dnode/vnode/src/tsdb/tsdbCompact.c
@@ -55,6 +55,7 @@ typedef struct STsdbDataIter {
 typedef struct {
   STsdb     *pTsdb;
   int64_t    cid;
+  int8_t     cmprAlg;
   int32_t    maxRows;
   int32_t    minRows;
   STsdbFS    fs;
@@ -72,8 +73,9 @@ typedef struct {
   // Writer
   SDataFWriter *pWriter;
   SArray       *aBlockIdx;  // SArray<SBlockIdx>
-  SMapData      mDataBlk;   // SMapData<SDataBlk>
-  SArray       *aSttBlk;    // SArray<SSttBlk>
+  TABLEID       tableId;
+  SMapData      mDataBlk;  // SMapData<SDataBlk>
+  SArray       *aSttBlk;   // SArray<SSttBlk>
 } STsdbCompactor;
 
 #define TSDB_FLG_DEEP_COMPACT 0x1
@@ -210,8 +212,23 @@ _exit:
 }
 
 static void tsdbDataIterClose(STsdbDataIter *pIter) {
-  // TODO
-  ASSERT(0);
+  if (pIter == NULL) return;
+
+  if (pIter->flag & TSDB_ITER_TYPE_MEM) {
+    ASSERT(0);
+  } else if (pIter->flag & TSDB_ITER_TYPE_DAT) {
+    ASSERT(0);
+  } else if (pIter->flag & TSDB_ITER_TYPE_STT) {
+    SSttDIter *pSttDIter = (SSttDIter *)pIter->handle;
+
+    tBlockDataDestroy(&pSttDIter->bData);
+    taosArrayDestroy(pSttDIter->aSttBlk);
+    tsdbDataFReaderClose(&pSttDIter->pReader);
+  } else {
+    ASSERT(0);
+  }
+
+  taosMemoryFree(pIter);
 }
 
 static int32_t tsdbDataIterNext(STsdbDataIter *pIter, TABLEID *pExcludeTableId) {
@@ -285,7 +302,8 @@ static int32_t tsdbBeginCompact(STsdb *pTsdb, STsdbCompactor *pCompactor) {
   int32_t lino = 0;
 
   pCompactor->pTsdb = pTsdb;
-  // pCompactor->cid = 0; (TODO)
+  pCompactor->cid = 0;  // TODO
+  pCompactor->cmprAlg = pTsdb->pVnode->config.tsdbCfg.compression;
   pCompactor->maxRows = pTsdb->pVnode->config.tsdbCfg.maxRows;
   pCompactor->minRows = pTsdb->pVnode->config.tsdbCfg.minRows;
 
@@ -536,6 +554,7 @@ static int32_t tsdbOpenCompactor(STsdbCompactor *pCompactor) {
 
   pCompactor->fid = pCompactor->pDFileSet->fid;
 
+  // reader
   code = tsdbDataFReaderOpen(&pCompactor->pReader, pTsdb, pCompactor->pDFileSet);
   TSDB_CHECK_CODE(code, lino, _exit);
 
@@ -567,9 +586,15 @@ static int32_t tsdbOpenCompactor(STsdbCompactor *pCompactor) {
   pCompactor->pIter = NULL;
   tBlockDataReset(&pCompactor->bData);
 
-  // open writers
-  SDFileSet fSet = {0};  // TODO
-  code = tsdbDataFWriterOpen(&pCompactor->pWriter, pTsdb, NULL);
+  // writer
+  SDFileSet wSet = {.diskId = (SDiskID){0},  // TODO
+                    .fid = pCompactor->pDFileSet->fid,
+                    .pHeadF = &(SHeadFile){.commitID = pCompactor->cid},
+                    .pDataF = &(SDataFile){.commitID = pCompactor->cid},
+                    .pSmaF = &(SSmaFile){.commitID = pCompactor->cid},
+                    .nSttF = 1,
+                    .aSttF = {&(SSttFile){.commitID = pCompactor->cid}}};
+  code = tsdbDataFWriterOpen(&pCompactor->pWriter, pTsdb, &wSet);
   TSDB_CHECK_CODE(code, lino, _exit);
 
   if (pCompactor->aBlockIdx == NULL) {
@@ -604,19 +629,77 @@ _exit:
 }
 
 static void tsdbCloseCompactor(STsdbCompactor *pCompactor) {
-  STsdb *pTsdb = pCompactor->pTsdb;
-
   for (STsdbDataIter *pIter = pCompactor->iterList; pIter;) {
     STsdbDataIter *pIterNext = pIter->next;
     tsdbDataIterClose(pIter);
     pIter = pIterNext;
   }
 
-  // TODO
-  ASSERT(0);
+  tDestroyTSchema(pCompactor->tbSkm.pTSchema);
+  pCompactor->tbSkm.pTSchema = NULL;
+
+  tsdbDataFReaderClose(&pCompactor->pReader);
+}
+
+extern int32_t tsdbWriteDataBlock(SDataFWriter *pWriter, SBlockData *pBlockData, SMapData *mDataBlk, int8_t cmprAlg);
+extern int32_t tsdbWriteSttBlock(SDataFWriter *pWriter, SBlockData *pBlockData, SArray *aSttBlk, int8_t cmprAlg);
+static int32_t tsdbCompactWriteBlockData(STsdbCompactor *pCompactor) {
+  int32_t code = 0;
+  int32_t lino = 0;
+
+  SBlockData *pBData = &pCompactor->bData;
+
+  if (pBData->nRow == 0) goto _exit;
+
+  if (pBData->uid && pBData->nRow >= pCompactor->minRows) {  // write to .data file
+    code = tsdbWriteDataBlock(pCompactor->pWriter, pBData, &pCompactor->mDataBlk, pCompactor->cmprAlg);
+    TSDB_CHECK_CODE(code, lino, _exit);
+
+    pCompactor->tableId.suid = pBData->suid;
+    pCompactor->tableId.uid = pBData->uid;
+  } else {  // write to .stt file
+    code = tsdbWriteSttBlock(pCompactor->pWriter, pBData, pCompactor->aSttBlk, pCompactor->cmprAlg);
+    TSDB_CHECK_CODE(code, lino, _exit);
+  }
+
+  tBlockDataClear(&pCompactor->bData);
 
 _exit:
-  tsdbDebug("vgId:%d %s done", TD_VID(pTsdb->pVnode), __func__);
+  if (code) {
+    tsdbError("vgId:%d %s failed at line %d since %s", TD_VID(pCompactor->pTsdb->pVnode), __func__, lino,
+              tstrerror(code));
+  }
+  return code;
+}
+
+static int32_t tsdbCompactWriteDataBlk(STsdbCompactor *pCompactor) {
+  int32_t code = 0;
+  int32_t lino = 0;
+
+  if (pCompactor->mDataBlk.nItem == 0) goto _exit;
+
+  SBlockIdx *pBlockIdx = (SBlockIdx *)taosArrayReserve(pCompactor->aBlockIdx, 1);
+  if (pBlockIdx == NULL) {
+    code = TSDB_CODE_OUT_OF_MEMORY;
+    TSDB_CHECK_CODE(code, lino, _exit);
+  }
+
+  pBlockIdx->suid = pCompactor->tableId.suid;
+  pBlockIdx->uid = pCompactor->tableId.uid;
+
+  code = tsdbWriteDataBlk(pCompactor->pWriter, &pCompactor->mDataBlk, pBlockIdx);
+  TSDB_CHECK_CODE(code, lino, _exit);
+
+  tMapDataReset(&pCompactor->mDataBlk);
+  pCompactor->tableId.suid = 0;
+  pCompactor->tableId.uid = 0;
+
+_exit:
+  if (code) {
+    tsdbError("vgId:%d %s failed at line %d since %s", TD_VID(pCompactor->pTsdb->pVnode), __func__, lino,
+              tstrerror(code));
+  }
+  return code;
 }
 
 int32_t tsdbCompact(STsdb *pTsdb, int32_t flag) {
@@ -654,31 +737,29 @@ int32_t tsdbCompact(STsdb *pTsdb, int32_t flag) {
                               NULL, 0);
         TSDB_CHECK_CODE(code, lino, _exit);
       } else {
-        if (pCompactor->bData.suid != pRowInfo->suid) {  // not same super table
-          if (pCompactor->bData.nRow < pCompactor->minRows) {
-            // TODO: write block data to .stt file, need to check if nRow is 0
-            tBlockDataClear(&pCompactor->bData);
-          } else {
-            // TODO: write block data to .data file, need to check if nRow is 0
-            tBlockDataClear(&pCompactor->bData);
-          }
+        if (pCompactor->bData.suid != pRowInfo->suid) {  // different super table
+          code = tsdbCompactWriteBlockData(pCompactor);
+          TSDB_CHECK_CODE(code, lino, _exit);
+
+          code = tsdbCompactWriteDataBlk(pCompactor);
+          TSDB_CHECK_CODE(code, lino, _exit);
 
           code = tBlockDataInit(&pCompactor->bData, &(TABLEID){.suid = pRowInfo->suid, .uid = pRowInfo->uid}, pTSchema,
                                 NULL, 0);
           TSDB_CHECK_CODE(code, lino, _exit);
-        } else if (pCompactor->bData.uid != pRowInfo->uid) {
-          if (pRowInfo->suid) {  // different child table
-            if (pCompactor->bData.nRow > pCompactor->minRows) {
-              // TODO
-            }
-          } else {  // different normal table
-            if (pCompactor->bData.nRow < pCompactor->minRows) {
-              // TODO: write data to .stt file, need to check if nRow is 0
-              tBlockDataClear(&pCompactor->bData);
-            } else {
-              // TODO: write data to .data file, need to check if nRow is 0
-              tBlockDataClear(&pCompactor->bData);
+        } else if (pCompactor->bData.uid != pRowInfo->uid) {  // different table
+          if (pRowInfo->suid) {
+            if (pCompactor->bData.uid && pCompactor->bData.nRow >= pCompactor->minRows) {
+              code = tsdbCompactWriteBlockData(pCompactor);
+              TSDB_CHECK_CODE(code, lino, _exit);
             }
+          } else {
+            // different normal table
+            code = tsdbCompactWriteBlockData(pCompactor);
+            TSDB_CHECK_CODE(code, lino, _exit);
+
+            code = tsdbCompactWriteDataBlk(pCompactor);
+            TSDB_CHECK_CODE(code, lino, _exit);
 
             code = tBlockDataInit(&pCompactor->bData, &(TABLEID){.suid = pRowInfo->suid, .uid = pRowInfo->uid},
                                   pTSchema, NULL, 0);
@@ -688,12 +769,13 @@ int32_t tsdbCompact(STsdb *pTsdb, int32_t flag) {
       }
 
       // append row to block data
-      code = tBlockDataAppendRow(&pCompactor->bData, &pRowInfo->row, pTSchema, pRowInfo->uid);
+      code = tBlockDataAppendRowEx(&pCompactor->bData, &pRowInfo->row, pTSchema, pRowInfo->uid);
       TSDB_CHECK_CODE(code, lino, _exit);
 
       // check if block data is full
       if (pCompactor->bData.nRow >= pCompactor->maxRows) {
-        tBlockDataClear(&pCompactor->bData);
+        code = tsdbCompactWriteBlockData(pCompactor);
+        TSDB_CHECK_CODE(code, lino, _exit);
       }
 
       // iterate to next row
@@ -701,25 +783,25 @@ int32_t tsdbCompact(STsdb *pTsdb, int32_t flag) {
       TSDB_CHECK_CODE(code, lino, _exit);
     }
 
-    if (pCompactor->bData.nRow > 0) {
-      // write again
-    }
+    code = tsdbCompactWriteBlockData(pCompactor);
+    TSDB_CHECK_CODE(code, lino, _exit);
+
+    code = tsdbCompactWriteDataBlk(pCompactor);
+    TSDB_CHECK_CODE(code, lino, _exit);
+
+    code = tsdbWriteBlockIdx(pCompactor->pWriter, pCompactor->aBlockIdx);
+    TSDB_CHECK_CODE(code, lino, _exit);
 
     code = tsdbWriteSttBlk(pCompactor->pWriter, pCompactor->aSttBlk);
     TSDB_CHECK_CODE(code, lino, _exit);
 
-    if (pCompactor->mDataBlk.nItem > 0) {
-      SBlockIdx *pBlockIdx = taosArrayReserve(pCompactor->aBlockIdx, 1);
-      if (pBlockIdx == NULL) {
-        code = TSDB_CODE_OUT_OF_MEMORY;
-        TSDB_CHECK_CODE(code, lino, _exit);
-      }
+    code = tsdbUpdateDFileSetHeader(pCompactor->pWriter);
+    TSDB_CHECK_CODE(code, lino, _exit);
 
-      code = tsdbWriteDataBlk(pCompactor->pWriter, &pCompactor->mDataBlk, pBlockIdx);
-      TSDB_CHECK_CODE(code, lino, _exit);
-    }
+    code = tsdbFSUpsertFSet(&pCompactor->fs, &pCompactor->pWriter->wSet);
+    TSDB_CHECK_CODE(code, lino, _exit);
 
-    code = tsdbWriteBlockIdx(pCompactor->pWriter, pCompactor->aBlockIdx);
+    code = tsdbDataFWriterClose(&pCompactor->pWriter, 1);
     TSDB_CHECK_CODE(code, lino, _exit);
 
     tsdbCloseCompactor(pCompactor);
diff --git a/source/dnode/vnode/src/tsdb/tsdbUtil.c b/source/dnode/vnode/src/tsdb/tsdbUtil.c
index 1c92e922b0..b47d49dfb7 100644
--- a/source/dnode/vnode/src/tsdb/tsdbUtil.c
+++ b/source/dnode/vnode/src/tsdb/tsdbUtil.c
@@ -637,7 +637,7 @@ SColVal *tsdbRowIterNext(STSDBRowIter *pIter) {
     }
   } else {
     ASSERT(0);
-    return NULL;   // suppress error report by compiler
+    return NULL;  // suppress error report by compiler
   }
 }
 
@@ -1070,34 +1070,55 @@ int32_t tBlockDataAppendRow(SBlockData *pBlockData, TSDBROW *pRow, STSchema *pTS
   if (pBlockData->uid == 0) {
     ASSERT(uid);
     code = tRealloc((uint8_t **)&pBlockData->aUid, sizeof(int64_t) * (pBlockData->nRow + 1));
-    if (code) goto _err;
+    if (code) goto _exit;
     pBlockData->aUid[pBlockData->nRow] = uid;
   }
   // version
   code = tRealloc((uint8_t **)&pBlockData->aVersion, sizeof(int64_t) * (pBlockData->nRow + 1));
-  if (code) goto _err;
+  if (code) goto _exit;
   pBlockData->aVersion[pBlockData->nRow] = TSDBROW_VERSION(pRow);
   // timestamp
   code = tRealloc((uint8_t **)&pBlockData->aTSKEY, sizeof(TSKEY) * (pBlockData->nRow + 1));
-  if (code) goto _err;
+  if (code) goto _exit;
   pBlockData->aTSKEY[pBlockData->nRow] = TSDBROW_TS(pRow);
 
   SColVal cv = {0};
   if (pRow->type == TSDBROW_ROW_FMT) {
     code = tRowAppendToColData(pRow->pTSRow, pTSchema, pBlockData->aColData, pBlockData->nColData);
-    if (code) goto _err;
+    if (code) goto _exit;
   } else if (pRow->type == TSDBROW_COL_FMT) {
     code = tBlockDataAppendBlockRow(pBlockData, pRow->pBlockData, pRow->iRow);
-    if (code) goto _err;
+    if (code) goto _exit;
   } else {
     ASSERT(0);
   }
   pBlockData->nRow++;
 
+_exit:
   return code;
+}
 
-_err:
-  return code;
+int32_t tBlockDataAppendRowEx(SBlockData *pBlockData, TSDBROW *pRow, STSchema *pTSchema, int64_t uid) {
+  int32_t code = 0;
+
+  ASSERT(pBlockData->suid || pBlockData->uid);
+
+  if (pBlockData->nRow == 0) {
+    pBlockData->uid = uid;
+  } else if (pBlockData->uid && pBlockData->uid != uid) {
+    ASSERT(pBlockData->suid);
+
+    code = tRealloc((uint8_t **)&pBlockData->aUid, sizeof(int64_t) * (pBlockData->nRow + 1));
+    if (code) return code;
+
+    for (int32_t iRow = 0; iRow < pBlockData->nRow; iRow++) {
+      pBlockData->aUid[iRow] = pBlockData->uid;
+    }
+
+    pBlockData->uid = 0;
+  }
+
+  return tBlockDataAppendRow(pBlockData, pRow, pTSchema, uid);
 }
 
 void tBlockDataGetColData(SBlockData *pBlockData, int16_t cid, SColData **ppColData) {