diff --git a/source/common/src/cos.c b/source/common/src/cos.c
index ea41afd8fb..71f0df5ebe 100644
--- a/source/common/src/cos.c
+++ b/source/common/src/cos.c
@@ -520,7 +520,7 @@ int32_t s3PutObjectFromFile2(const char *file, const char *object) {
 
     // div round up
     int      seq;
-    uint64_t chunk_size = MULTIPART_CHUNK_SIZE >> 8;
+    uint64_t chunk_size = MULTIPART_CHUNK_SIZE >> 7;
     int      totalSeq = ((contentLength + chunk_size - 1) / chunk_size);
 
     MultipartPartData partData;
@@ -717,6 +717,7 @@ static SArray *getListByPrefix(const char *prefix) {
       return data.objectArray;
     }
   } else {
+    taosArrayDestroyEx(data.objectArray, s3FreeObjectKey);
     s3PrintError(__func__, data.status, data.err_msg);
   }
   return NULL;
diff --git a/source/dnode/vnode/src/tsdb/tsdbRetention.c b/source/dnode/vnode/src/tsdb/tsdbRetention.c
index bc76377597..f6888ba9cb 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRetention.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRetention.c
@@ -359,6 +359,9 @@ static int32_t tsdbDoRetentionOnFileSet(SRTNer *rtner, STFileSet *fset) {
         s3EvictCache(fobj->fname, fsize * 2);
       }
       */
+      if (fobj->f->did.level > did.level) {
+        continue;
+      }
       tsdbInfo("file:%s size: %" PRId64 " do migrate from %d to %d", fobj->fname, fobj->f->size, fobj->f->did.level,
                did.level);