reswqa opened a new pull request, #21603:
URL: https://github.com/apache/flink/pull/21603
## What is the purpose of the change
*`HsFileDataIndex` is maintains in a list of treeMap(i.e. in memory), there
is no problem in our 10T TPC-DS test. However, with the increase of job's data
volume, the index will continue to grow, and there is a risk of OOM. We should
support index data spilling and loading to avoid this problem.*
## Brief change log
- *HsFileDataIndex supports caching and spilling index entry*
## Verifying this change
This change added unit 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, Kubernetes/Yarn, ZooKeeper: no
- The S3 file system connector: no
## Documentation
- Does this pull request introduce a new feature? no
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