yigress opened a new pull request, #23425:
URL: https://github.com/apache/flink/pull/23425
## What is the purpose of the change
provide option to clean up checkpoints faster in CheckpointsCleaner
## Brief change log
adds a checkpointing config state.checkpoints.cleaner.fastmode default
false,
if true, this change gathers all statebojects to be discarded and use the
executor passed in the cleanup function to clean them in parallel.
## Verifying this change
This change added tests and can be verified as follows:
- added test that validates all discardable stateobjects to be cleaned up.
- manually verified the change with clean up 4K state files in blobstorage,
it reduces time from ~8 minute to 1 minute on a 8 threads pool
## 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)`: (yes / no)
- The serializers: no
- The runtime per-record code paths (performance sensitive): no
- Anything that affects deployment or recovery: Checkpointing
- The S3 file system connector: no
## Documentation
- Does this pull request introduce a new feature? yes
- If yes, how is the feature documented? (not applicable / docs / JavaDocs
/ not documented)
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