fix review

Author: lszskye

src/paimon/core/mergetree/levels_test.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2024-present Alibaba Inc.
+ * Copyright 2026-present Alibaba Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/paimon/core/mergetree/lookup_levels.cpp

@@ -214,7 +214,9 @@ Status LookupLevels<T>::CreateSstFileFromDataFile(const std::shared_ptr<DataFile
         lookup_store_factory_->CreateWriter(fs_, kv_file_path, bloom_filter, pool_));
 
     ScopeGuard write_guard([&]() -> void {
-        [[maybe_unused]] auto status = fs_->Delete(kv_file_path, /*recursive=*/false);
+        [[maybe_unused]] auto status = kv_writer->Close();
+        reader->Close();
+        [[maybe_unused]] auto delete_status = fs_->Delete(kv_file_path, /*recursive=*/false);
     });
 
     // Read each KeyValue and write to lookup file with or without position.