ljz2051 opened a new pull request, #24367:
URL: https://github.com/apache/flink/pull/24367
## What is the purpose of the change
This pull request cleans up useless sst files within rocksdb during
rescaling, which reclaims local disk space, reducing the space amplification
problem caused by deleteRange.
## Brief change log
- Invoke Rocksdb.deleteFilesInRanges api to delele useless files during
rescaling
## Verifying this change
This change is already covered by existing tests, such as
RocksDBIncrementalCheckpointUtilsTest and
RocksIncrementalCheckpointRescalingTest.
## 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: yes
- The S3 file system connector: no
## Documentation
- Does this pull request introduce a new feature? no
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