GJL opened a new pull request #12249:
URL: https://github.com/apache/flink/pull/12249
## What is the purpose of the change
*Tear down installed software in reverse order in Jepsen tests. This
mitigates the issue that sometimes YARN's NodeManager directories cannot be
removed using `rm -rf` because Flink processes keep running and generate files
after the YARN NodeManager is shut down. `rm -r` removes files recursively but
if files are created in the background concurrently, the command can still fail
with a non-zero exit code.*
## Brief change log
- *See commits*
## Verifying this change
This change is already covered by existing tests, such as *flink-jepsen*.
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (yes / **no**)
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: (yes / **no**)
- The serializers: (yes / **no** / don't know)
- The runtime per-record code paths (performance sensitive): (yes / **no**
/ don't know)
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: (yes / **no** /
don't know)
- The S3 file system connector: (yes / **no** / don't know)
## Documentation
- Does this pull request introduce a new feature? (yes / **no**)
- If yes, how is the feature documented? (**not applicable** / docs /
JavaDocs / not documented)
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