dawidwys opened a new pull request #11622: [FLINK-16913][configuration, statebackend] Migrated StateBackends to use ReadableConfig instead of Configuration URL: https://github.com/apache/flink/pull/11622 ## What is the purpose of the change StateBackendFactories do not need a full read and write access to the Configuration object. It's sufficient to have read only access. Moreover the ReadableConfig is a lightweight interface that can be implemented in other ways, not just through the Configuration. Lastly we exposed this lightweight interface as a configuration entry point for ExecutionEnvironments. This change will make it possible to pass the ReadableConfig directly to the StateBackendFactories without fragile adapters. ## Brief change log - Replaced Configuration with ReadableConfig for StateBackends configuration - Changed type of `TIMER_SERVICE_FACTORY` option - Removed `ReadableConfigToConfigurationAdapter.java` ## Verifying this change This change is already covered by existing tests. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (yes / **no**) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (**yes** / no) - The serializers: (yes / **no** / don't know) - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: (yes / **no** / don't know) - The S3 file system connector: (yes / **no** / don't know) ## Documentation - Does this pull request introduce a new feature? (yes / **no**) - If yes, how is the feature documented? (**not applicable** / docs / JavaDocs / not documented)
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