sync file

Signed-off-by: zhengyu <zhangzhengyu@selectdb.com>

Author: freemandealer

be/src/io/cache/block_file_cache.cpp

@@ -2272,6 +2272,7 @@ void BlockFileCache::run_background_lru_dump() {
             _lru_dumper->dump_queue("normal");
             _lru_dumper->dump_queue("index");
             _lru_dumper->dump_queue("ttl");
+            _lru_dumper->set_first_dump_done();
         }
     }
 }