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Summary: Before this PR, it is required that application open RocksDB secondary instance with `max_open_files = -1`. This is a hacky workaround that prevents IOErrors on the seconary instance during point-lookup or range scan caused by primary instance deleting the table files. This is not necessary if the application can coordinate the primary and secondaries so that primary does not delete files that are still being used by the secondaries. Or users can provide a custom Env/FS implementation that deletes the files only after all primary and secondary instances indicate files are obsolete and deleted. Pull Request resolved: https://github.com/facebook/rocksdb/pull/10260 Test Plan: make check Reviewed By: jay-zhuang Differential Revision: D37462633 Pulled By: riversand963 fbshipit-source-id: 9c2fc939f49663efa61e3d60c8f1e01d64b9d72c