Myasuka opened a new pull request #10820: [FLINK-15512][statebackend] Refactor the mechanism to calculate the cache capacity shared among RocksDB instance(s) URL: https://github.com/apache/flink/pull/10820 ## What is the purpose of the change Due to the implemenation of write buffer manager of RocksDB and the issue cannot create stric capacity limit cache, we need to refactor the mechanism to calculate the cache capacity shared among RocksDB instance(s). ## Brief change log - Introduce `RocksDBOperationUtils.java#calculateActualCacheSize` to calculate actual cache size. - Add test `testCreateSharedResourcesWithExpectedCapacity` to verify the capacity of cache created is what we want. ## Verifying this change This change added tests and can be verified as follows: - Added `testCreateSharedResourcesWithExpectedCapacity` to verify the capacity of cache created is what we want. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): no - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: no - The serializers: no - The runtime per-record code paths (performance sensitive): no - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: no - The S3 file system connector: no ## Documentation - Does this pull request introduce a new feature? no - If yes, how is the feature documented? not applicable
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