klion26 opened a new pull request #7921: [FLINK-11825][StateBackends] Resolve name class of StateTTL TimeCharacteristic class URL: https://github.com/apache/flink/pull/7921 ## What is the purpose of the change Resolve name class of StateTTL TimeCharacteristic class for at least following two reasons: 1. Users get confused because the mistakenly import org.apache.flink.api.common.state.TimeCharacteristic. 2. When using the StateTTL feature, users need to spell out the package name for org.apache.flink.api.common.state.TimeCharacteristic because the other class is most likely already imported. ## Brief change log Changes include: - Deprecated the StateTtlConfig#TimeCharacteristic class (for backward-compatibility). - Introduce a new class named StateTtlConfig#TtlTimeCharacteristic. We can not remove the class StateTtlConfig#TimeCharacteristic and use `org.apache.flink.streaming.api.TimeCharacteristic` directly, because StateTtlConfig locates in module flink-core and `org.apache.flink.streaming.api.TimeCharacteristic` locates in flink-streaming-java, so we choice to rename StateTtlConfig#TimeCharacteristic. ## Verifying this change This change is already covered by existing tests, such as *(please describe 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, 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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