chendonglin521 opened a new pull request #15667:
URL: https://github.com/apache/flink/pull/15667
## What is the purpose of the change
*Reduce the delete file api when the checkpoint is completed*
## Brief change log
- *In full checkpoint, to delete the snapshot(chk-) folder directly*
- *In incremental checkpoint, unregister the shared state first, and then
dropping the exclusive location as a whole.*
## Verifying this change
This change added tests and can be verified as follows:
- *refator CompletedCheckpoint.doDiscard, add private method
getIncrementKeyedStates to get increment key*
- *add method void disposeStorageLocation(boolean recursive) throws
IOException in CompletedCheckpointStorageLocation*
## 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)
## Documentation
- Does this pull request introduce a new feature? (no)
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