Zakelly opened a new pull request #17874:
URL: https://github.com/apache/flink/pull/17874
## What is the purpose of the change
Change the relationship of PredefinedOptions and RocksDBConfigurableOptions,
make it more clear for user to configure RocksDB.
## Brief change log
1. Provide a default value for each option in RocksDBConfigurableOptions;
2. Refactor PredefinedOptions, make each element of this enum carry a config
map that will override the default value of specified keys.
3. Change the RocksDBResourceContainer#getDbOptions and
RocksDBResourceContainer#getColumnOptions, load config values from the provided
ReadableConfig and specified PredefinedOptions. Override relationship: user
specified > predefined options > default value.
4. Keep the ConfigurableRocksDBOptionsFactory interface and load the
user-defined options factory, and call corresponding methods to apply
customized RocksDB options after loading from the config.
5. The DefaultConfigurableOptionsFactory is no longer used, so we mark it
deprecated. The default value of 'state.backend.rocksdb.options-factory' is
also removed.
## 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): 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, Kubernetes/Yarn, 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? docs
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