rkhachatryan opened a new pull request, #21264:
URL: https://github.com/apache/flink/pull/21264
## What is the purpose of the change
```
The memory shared is BlockCache and WriteBufferManager.
The motivation is to allow more flexible memory distribution among tasks
while still capping RocksDB memory usage.
```
## Verifying this change
- end-to-end: `TaskManagerWideRocksDbMemorySharingITCase` using rocksdb
metrics
**- unit tests: TBD**
## 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
- 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/Mesos, ZooKeeper: no
- The S3 file system connector: no
## Documentation
- Does this pull request introduce a new feature? yes
**- If yes, how is the feature documented? TBD**
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