JingsongLi commented on code in PR #7007:
URL: https://github.com/apache/paimon/pull/7007#discussion_r2681379469


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paimon-python/pypaimon/catalog/rest/rest_token_file_io.py:
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@@ -18,27 +18,38 @@
 import logging
 import threading
 import time
+from pathlib import Path
 from typing import Optional
 
+import pyarrow
+import pyarrow.fs
+from pypaimon.common.options.config import CatalogOptions, OssOptions
 from pyarrow._fs import FileSystem
 
 from pypaimon.api.rest_api import RESTApi
+from pypaimon.common.options import Options
+from pypaimon.api.rest_util import RESTUtil
 from pypaimon.catalog.rest.rest_token import RESTToken
 from pypaimon.common.file_io import FileIO
 from pypaimon.common.identifier import Identifier
-from pypaimon.common.options import Options
-from pypaimon.common.options.config import CatalogOptions, OssOptions
+
+from cachetools import TTLCache
 
 
 class RESTTokenFileIO(FileIO):

Review Comment:
   Maybe we should do a refactor? FileIO should be an interface. 



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