diff --git a/source/dnode/vnode/src/inc/tsdbReadImpl.h b/source/dnode/vnode/src/inc/tsdbReadImpl.h
index 171d003e3b..16eb55967c 100644
--- a/source/dnode/vnode/src/inc/tsdbReadImpl.h
+++ b/source/dnode/vnode/src/inc/tsdbReadImpl.h
@@ -219,7 +219,6 @@ int   tsdbLoadBlockInfo(SReadH *pReadh, void *pTarget);
 int   tsdbLoadBlockData(SReadH *pReadh, SBlock *pBlock, SBlockInfo *pBlockInfo);
 int   tsdbLoadBlockDataCols(SReadH *pReadh, SBlock *pBlock, SBlockInfo *pBlkInfo, const int16_t *colIds, int numOfColsIds);
 int   tsdbLoadBlockStatis(SReadH *pReadh, SBlock *pBlock);
-int   tsdbLoadBlockOffset(SReadH *pReadh, SBlock *pBlock);
 int   tsdbEncodeSBlockIdx(void **buf, SBlockIdx *pIdx);
 void *tsdbDecodeSBlockIdx(void *buf, SBlockIdx *pIdx);
 void  tsdbGetBlockStatis(SReadH *pReadh, SDataStatis *pStatis, int numOfCols, SBlock *pBlock);
diff --git a/source/dnode/vnode/src/tsdb/tsdbReadImpl.c b/source/dnode/vnode/src/tsdb/tsdbReadImpl.c
index 2ca5e948a6..40cdcba697 100644
--- a/source/dnode/vnode/src/tsdb/tsdbReadImpl.c
+++ b/source/dnode/vnode/src/tsdb/tsdbReadImpl.c
@@ -19,6 +19,7 @@
 
 static void tsdbResetReadTable(SReadH *pReadh);
 static void tsdbResetReadFile(SReadH *pReadh);
+static int  tsdbLoadBlockOffset(SReadH *pReadh, SBlock *pBlock);
 static int  tsdbLoadBlockDataImpl(SReadH *pReadh, SBlock *pBlock, SDataCols *pDataCols);
 static int  tsdbCheckAndDecodeColumnData(SDataCol *pDataCol, void *content, int32_t len, int8_t comp, int numOfRows,
                                          int numOfBitmaps, int lenOfBitmaps, int maxPoints, char *buffer,
@@ -349,7 +350,7 @@ int tsdbLoadBlockStatis(SReadH *pReadh, SBlock *pBlock) {
   return 0;
 }
 
-int tsdbLoadBlockOffset(SReadH *pReadh, SBlock *pBlock) {
+static int tsdbLoadBlockOffset(SReadH *pReadh, SBlock *pBlock) {
   ASSERT(pBlock->numOfSubBlocks <= 1);
   SDFile *pDFile = (pBlock->last) ? TSDB_READ_LAST_FILE(pReadh) : TSDB_READ_DATA_FILE(pReadh);
   if (tsdbSeekDFile(pDFile, pBlock->offset, SEEK_SET) < 0) {