diff --git a/src/tsdb/inc/tsdbReadImpl.h b/src/tsdb/inc/tsdbReadImpl.h
index a06cc0f8710b955b4c4fa9a7a88262836e46bb36..35cc49f1644d7256c54ca51c9472a375e22b8e78 100644
--- a/src/tsdb/inc/tsdbReadImpl.h
+++ b/src/tsdb/inc/tsdbReadImpl.h
@@ -235,20 +235,4 @@ static FORCE_INLINE int tsdbMakeRoom(void **ppBuf, size_t size) {
   return 0;
 }
 
-FORCE_INLINE int tsdbInitReadHBlkIdx(SReadH *pReadh, STsdbRepo *pRepo) {
-  ASSERT(pReadh != NULL && pRepo != NULL);
-
-  memset((void *)pReadh, 0, sizeof(*pReadh));
-  pReadh->pRepo = pRepo;
-  TSDB_FSET_SET_INIT(TSDB_READ_FSET(pReadh));
-
-  pReadh->aBlkIdx = taosArrayInit(1024, sizeof(SBlockIdx));
-  if (pReadh->aBlkIdx == NULL) {
-    terrno = TSDB_CODE_TDB_OUT_OF_MEMORY;
-    return -1;
-  }
-
-  return 0;
-}
-
 #endif /*_TD_TSDB_READ_IMPL_H_*/
diff --git a/src/tsdb/src/tsdbFS.c b/src/tsdb/src/tsdbFS.c
index e749fdbdac407cea6f189937d2572cea0d0b78ef..ac7f6ea10b632909fc5a649b70f8ff821beed496 100644
--- a/src/tsdb/src/tsdbFS.c
+++ b/src/tsdb/src/tsdbFS.c
@@ -1322,7 +1322,8 @@ static int tsdbRestoreDFileSet(STsdbRepo *pRepo) {
 
   // Loop to recover each file set
   SDFileSet fset = {0};
-  bool      isOneFSetFinish = false;
+  bool      isOneFSetFinish = true;
+  int       lastFType = -1;
   // one fileset ends when (1) the array ends or (2) encounter different fid
   for (size_t index = 0; index < fArraySize; ++index) {
     int         tvid = -1, tfid = -1;
@@ -1332,13 +1333,17 @@ static int tsdbRestoreDFileSet(STsdbRepo *pRepo) {
 
     pf = taosArrayGet(fArray, index);
     tfsbasename(pf, bname);
-    tsdbParseDFilename(bname, &tvid, &tfid, &ttype, &tversion);
+    tsdbParseDFilename(bname, &tvid, &tfid, &ttype, &tversion); 
     ASSERT(tvid == REPO_ID(pRepo));
     SDFile *pDFile = TSDB_DFILE_IN_SET(&fset, ttype);
-
     if (tfid < pRepo->rtn.minFid) {  // skip the file expired
       continue;
     }
+    if ((isOneFSetFinish == false) && (lastFType == ttype)) {  // only fetch the 1st file with same fid and type.
+      continue;
+    }
+
+    lastFType = ttype;
 
     if (index == 0) {
       memset(&fset, 0, sizeof(SDFileSet));
@@ -1477,7 +1482,13 @@ static int tsdbComparTFILE(const void *arg1, const void *arg2) {
     } else if (ftype1 > ftype2) {
       return 1;
     } else {
-      return 0;
+      if (version1 < version2) {
+        return -1;
+      } else if (version1 > version2) {
+        return 1;
+      } else {
+        return 0;
+      }
     }
   }
 }
diff --git a/src/tsdb/src/tsdbFile.c b/src/tsdb/src/tsdbFile.c
index 50d70804a444850fbf8e9935e37c92baf0e54afc..20d521e32e40bb4e957102ca0f60ac78ed67e104 100644
--- a/src/tsdb/src/tsdbFile.c
+++ b/src/tsdb/src/tsdbFile.c
@@ -454,7 +454,7 @@ static int tsdbScanAndTryFixDFile(STsdbRepo *pRepo, SDFile *pDFile) {
   }
 
   if (pDFile->info.size < dfstat.st_size) {
-    if (tsdbOpenDFile(&df, O_RDWR) < 0) {
+    if (tsdbOpenDFile(&df, O_WRONLY) < 0) {
       return -1;
     }