diff --git a/source/libs/index/inc/indexFstFile.h b/source/libs/index/inc/indexFstFile.h
index f492cd59bc..a161c4aee1 100644
--- a/source/libs/index/inc/indexFstFile.h
+++ b/source/libs/index/inc/indexFstFile.h
@@ -41,13 +41,13 @@ typedef struct IFileCtx {
       TdFilePtr pFile;
       bool      readOnly;
       char      buf[256];
-      int       size;
+      int64_t   size;
 #ifdef USE_MMAP
       char* ptr;
 #endif
     } file;
     struct {
-      int32_t capa;
+      int32_t cap;
       char*   buf;
     } mem;
   };
diff --git a/source/libs/index/src/indexFstFile.c b/source/libs/index/src/indexFstFile.c
index b5b514c449..77dce21150 100644
--- a/source/libs/index/src/indexFstFile.c
+++ b/source/libs/index/src/indexFstFile.c
@@ -61,7 +61,7 @@ static int idxFileCtxDoReadFrom(IFileCtx* ctx, uint8_t* buf, int len, int32_t of
   }
   return nRead;
 }
-static int writeCtxGetSize(IFileCtx* ctx) {
+static int idxFileCtxGetSize(IFileCtx* ctx) {
   if (ctx->type == TFile) {
     int64_t file_size = 0;
     taosStatFile(ctx->file.buf, &file_size, NULL);
@@ -90,38 +90,36 @@ IFileCtx* idxFileCtxCreate(WriterType type, const char* path, bool readOnly, int
   if (ctx->type == TFile) {
     // ugly code, refactor later
     ctx->file.readOnly = readOnly;
+    memcpy(ctx->file.buf, path, strlen(path));
     if (readOnly == false) {
       ctx->file.pFile = taosOpenFile(path, TD_FILE_CREATE | TD_FILE_WRITE | TD_FILE_APPEND);
       taosFtruncateFile(ctx->file.pFile, 0);
-      int64_t file_size;
-      taosStatFile(path, &file_size, NULL);
-      ctx->file.size = (int)file_size;
+      taosStatFile(path, &ctx->file.size, NULL);
+      // ctx->file.size = (int)size;
 
     } else {
-      // ctx->file.pFile = open(path, O_RDONLY, S_IRWXU | S_IRWXG | S_IRWXO);
       ctx->file.pFile = taosOpenFile(path, TD_FILE_READ);
 
-      int64_t file_size = 0;
-      taosFStatFile(ctx->file.pFile, &file_size, NULL);
-      ctx->file.size = (int)file_size;
+      int64_t size = 0;
+      taosFStatFile(ctx->file.pFile, &ctx->file.size, NULL);
+      ctx->file.size = (int)size;
 #ifdef USE_MMAP
       ctx->file.ptr = (char*)tfMmapReadOnly(ctx->file.pFile, ctx->file.size);
 #endif
     }
-    memcpy(ctx->file.buf, path, strlen(path));
     if (ctx->file.pFile == NULL) {
       indexError("failed to open file, error %d", errno);
       goto END;
     }
   } else if (ctx->type == TMemory) {
     ctx->mem.buf = taosMemoryCalloc(1, sizeof(char) * capacity);
-    ctx->mem.capa = capacity;
+    ctx->mem.cap = capacity;
   }
   ctx->write = idxFileCtxDoWrite;
   ctx->read = idxFileCtxDoRead;
   ctx->flush = idxFileCtxDoFlush;
   ctx->readFrom = idxFileCtxDoReadFrom;
-  ctx->size = writeCtxGetSize;
+  ctx->size = idxFileCtxGetSize;
 
   ctx->offset = 0;
   ctx->limit = capacity;
diff --git a/source/libs/index/src/indexFstUtil.c b/source/libs/index/src/indexFstUtil.c
index 82d760d6b6..5bda703b1f 100644
--- a/source/libs/index/src/indexFstUtil.c
+++ b/source/libs/index/src/indexFstUtil.c
@@ -75,7 +75,6 @@ CompiledAddr unpackDelta(char* data, uint64_t len, uint64_t nodeAddr) {
 }
 
 // fst slice func
-//
 
 FstSlice fstSliceCreate(uint8_t* data, uint64_t len) {
   FstString* str = (FstString*)taosMemoryMalloc(sizeof(FstString));
diff --git a/source/libs/index/src/indexTfile.c b/source/libs/index/src/indexTfile.c
index 8627ce329a..e9abd3e577 100644
--- a/source/libs/index/src/indexTfile.c
+++ b/source/libs/index/src/indexTfile.c
@@ -513,7 +513,7 @@ TFileReader* tfileReaderOpen(char* path, uint64_t suid, int64_t version, const c
     indexError("failed to open readonly file: %s, reason: %s", fullname, terrstr());
     return NULL;
   }
-  indexTrace("open read file name:%s, file size: %d", wc->file.buf, wc->file.size);
+  indexTrace("open read file name:%s, file size: %" PRId64 "", wc->file.buf, wc->file.size);
 
   TFileReader* reader = tfileReaderCreate(wc);
   return reader;
@@ -905,8 +905,9 @@ static int tfileReaderLoadFst(TFileReader* reader) {
   int64_t ts = taosGetTimestampUs();
   int32_t nread = ctx->readFrom(ctx, buf, fstSize, reader->header.fstOffset);
   int64_t cost = taosGetTimestampUs() - ts;
-  indexInfo("nread = %d, and fst offset=%d, fst size: %d, filename: %s, file size: %d, time cost: %" PRId64 "us", nread,
-            reader->header.fstOffset, fstSize, ctx->file.buf, ctx->file.size, cost);
+  indexInfo("nread = %d, and fst offset=%d, fst size: %d, filename: %s, file size: %" PRId64 ", time cost: %" PRId64
+            "us",
+            nread, reader->header.fstOffset, fstSize, ctx->file.buf, ctx->file.size, cost);
   // we assuse fst size less than FST_MAX_SIZE
   assert(nread > 0 && nread <= fstSize);