reswqa opened a new pull request, #20426:
URL: https://github.com/apache/flink/pull/20426
## What is the purpose of the change
*Compression is a useful feature for batch jobs, which can significantly
reduce disk load and the amount of data transferred over the network. Hybrid
shuffle should also support the compression of spilled data, especially under
the full spilling strategy.*
## Brief change log
- *Introduce compression support for HsMemoryDataSpiller*
## Verifying this change
This change added tests in HsMemoryDataSpillerTest and
HsSubpartitionFileReaderImplTest.
## 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
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