1996fanrui opened a new pull request, #21540:
URL: https://github.com/apache/flink/pull/21540
## What is the purpose of the change
Currently, the sort order is ascend by default, it should be descend.
The most busy subtask should be displayed on top.
## Brief change log
- Change the SortOrder of BusyRatio to descend by default.
- Don't change the order of `listOfSubTaskBackpressure`, it will sort by
subtask when the user chooses not to sort.
## Verifying this change
This change is a trivial rework / code cleanup without any test coverage.
## 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
- If yes, how is the feature documented? not documented
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