diff --git a/src/common/src/dataformat.c b/src/common/src/dataformat.c
index 56565b6e5c6e16cb26b4e8469132ee2a3f833d11..0496fc6feb313597b343f10e366e838a46f1697f 100644
--- a/src/common/src/dataformat.c
+++ b/src/common/src/dataformat.c
@@ -355,7 +355,18 @@ void tdAppendDataRowToDataCol(SDataRow row, SDataCols *pCols) {
 }
 // Pop pointsToPop points from the SDataCols
 void tdPopDataColsPoints(SDataCols *pCols, int pointsToPop) {
-
+  int pointsLeft = pCols->numOfPoints - pointsToPop;
+
+  for (int iCol = 0; iCol < pCols->numOfCols; iCol++) {
+    SDataCol *p_col = pCols->cols + iCol;
+    if (p_col->len > 0) {
+      p_col->len = TYPE_BYTES[p_col->type] * pointsLeft;
+      if (pointsLeft > 0) {
+        memmove((void *)(p_col->pData), (void *)((char *)(p_col->pData) + TYPE_BYTES[p_col->type] * pointsToPop), p_col->len);
+      }
+    }
+  }
+  pCols->numOfPoints = pointsLeft;
 }
 
 /**
diff --git a/src/vnode/tsdb/inc/tsdbFile.h b/src/vnode/tsdb/inc/tsdbFile.h
index ac96d15126796dde5456decc8cac72dd796be007..0f654ad0bde2bf5d2656761b8b2775f18c028dc2 100644
--- a/src/vnode/tsdb/inc/tsdbFile.h
+++ b/src/vnode/tsdb/inc/tsdbFile.h
@@ -148,8 +148,6 @@ int tsdbLoadDataBlock(SFile *pFile, SCompBlock *pStartBlock, int numOfBlocks, SD
 
 // TODO: need an API to merge all sub-block data into one
 
-int tsdbWriteBlockToFile(SFileGroup *pGroup, SCompInfo *pCompInfo, SCompIdx *pIdx, int isMerge, SCompBlock *pBlock, SDataCols *pCols);
-
 void tsdbGetKeyRangeOfFileId(int32_t daysPerFile, int8_t precision, int32_t fileId, TSKEY *minKey, TSKEY *maxKey);
 #ifdef __cplusplus
 }
diff --git a/src/vnode/tsdb/src/tsdbFile.c b/src/vnode/tsdb/src/tsdbFile.c
index 3567517d79119a8a446716725dc60595f29e3777..088a164933865382ae33e1b15518818c6d385e27 100644
--- a/src/vnode/tsdb/src/tsdbFile.c
+++ b/src/vnode/tsdb/src/tsdbFile.c
@@ -196,65 +196,6 @@ int tsdbLoadColData(SFile *pFile, SCompCol *pCol, int64_t blockBaseOffset, void
   return 0;
 }
 
-static int tsdbWriteBlockToFileImpl(SFile *     pFile,              // File to write
-                                    SDataCols * pCols,              // Data column buffer
-                                    int         numOfPointsToWrie,  // Number of points to write to the file
-                                    SCompBlock *pBlock              // SCompBlock to hold block information to return
-                                    ) {
-  // pBlock->last = 0;
-  // pBlock->offset = lseek(pFile->fd, 0, SEEK_END);
-  // // pBlock->algorithm = ;
-  // pBlock->numOfPoints = pCols->numOfPoints;
-  // // pBlock->sversion = ;
-  // // pBlock->len = ;
-  // pBlock->numOfSubBlocks = 1;
-  // pBlock->keyFirst = dataColsKeyFirst(pCols);
-  // pBlock->keyLast = dataColsKeyLast(pCols);
-  // for (int i = 0; i < pCols->numOfCols; i++) {
-  //   // TODO: if all col value is NULL, do not save it
-  //   pBlock->numOfCols++;
-  //   pCompData->numOfCols++;
-  //   SCompCol *pCompCol = pCompData->cols + i;
-  //   pCompCol->colId = pCols->cols[i].colId;
-  //   pCompCol->type = pCols->cols[i].type;
-
-  //   // pCompCol->len = ;
-  //   // pCompCol->offset = ;
-  // }
-
-  return 0;
-}
-
-int tsdbWriteBlockToFile(SFileGroup *pGroup, SCompInfo *pCompInfo, SCompIdx *pIdx, int isMerge, SCompBlock *pBlock, SDataCols *pCols) {
-  memset((void *)pBlock, 0, sizeof(SCompBlock));
-  SFile *pFile = NULL;
-  SCompData *pCompData = (SCompData *)malloc(sizeof(SCompData) + sizeof(SCompCol) * pCols->numOfCols);
-  if (pCompData == NULL) return -1;
-  pCompData->delimiter = TSDB_FILE_DELIMITER;
-  // pCompData->uid = ;
-
-  if (isMerge) {
-    TSKEY keyFirst = dataColsKeyFirst(pCols);
-    // 1. Binary search the block the data can merged into
-
-    if (1/* the data should only merged into last file */) {
-    } else {
-    }
-  } else {
-    // Write directly to the file without merge
-    if (1/*pCols->numOfPoints < pCfg->minRowsPerFileBlock*/) {
-      // TODO: write the data to the last file
-    } else {
-      // TODO: wirte the data to the data file
-    }
-  }
-
-  // TODO: need to update pIdx
-
-  if (pCompData) free(pCompData);
-  return 0;
-}
-
 static int compFGroupKey(const void *key, const void *fgroup) {
   int         fid = *(int *)key;
   SFileGroup *pFGroup = (SFileGroup *)fgroup;
diff --git a/src/vnode/tsdb/src/tsdbMain.c b/src/vnode/tsdb/src/tsdbMain.c
index 42792bc1b8bb28e4f00e00b6861d9d2822db419c..5f7dd2513f312bbb5907bac4df8f700a6cfbe789 100644
--- a/src/vnode/tsdb/src/tsdbMain.c
+++ b/src/vnode/tsdb/src/tsdbMain.c
@@ -967,9 +967,26 @@ static int tsdbCommitToFile(STsdbRepo *pRepo, int fid, SSkipListIterator **iters
       tsdbReadRowsFromCache(pIter, maxKey, maxRowsToRead, pCols);
       if (pCols->numOfPoints == 0) break;
 
-      // TODO
-      int pointsWritten = 0; /* tsdbWriteBlockToFile(); */
+      int pointsWritten = 0;
+      // { // TODO : try to write the block data to file
+      //   if (!isCompBlockLoaded) { // Just append
+      //     if (pCols->numOfPoints > pCfg->minRowsPerFileBlock) { // write directly to .data file
+      //       lseek(pGroup->files[TSDB_FILE_TYPE_DATA], 0, SEEK_END);
+
+      //     } else {
+      //       if (isNewLastFile) { // write directly to .l file
+
+      //       } else { // write directly to .last file
+
+      //       }
+      //     }
+      //   } else { // Need to append
+      //     // SCompBlock *pTBlock = NULL;
+      //   }
+      // }
+      pointsWritten = pCols->numOfPoints;
       tdPopDataColsPoints(pCols, pointsWritten);
+      maxRowsToRead = pCfg->maxRowsPerFileBlock * 4 / 5 - pCols->numOfPoints;
     }
 
     // Write the SCompBlock part
@@ -1022,4 +1039,17 @@ static int tsdbHasDataToCommit(SSkipListIterator **iters, int nIters, TSKEY minK
     if (tsdbHasDataInRange(pIter, minKey, maxKey)) return 1;
   }
   return 0;
+}
+
+static int tsdbWriteBlockToFile(STsdbRepo *pRepo, SCompIdx *pIdx, SCompInfo *pCompInfo, SDataCols *pCols, SCompBlock *pCompBlock) {
+  STsdbCfg *pCfg = &(pRepo->config);
+
+  memset((void *)pCompBlock, 0, sizeof(SCompBlock));
+
+  if (pCompInfo == NULL) {
+    // Just need to append to file
+  } else {
+    // Need to merge
+  }
+  return 0;
 }
\ No newline at end of file