snuyanzin opened a new pull request, #27047:
URL: https://github.com/apache/flink/pull/27047
## What is the purpose of the change
The PR make the test more stable.
The problem with the test that all use same prefix and at some point it
counts items in profiling list by prefix which is same for all in this test.
The problem could be reproduced while running tests in parallel (usually
happens while `./mvnw clean install`)
## Brief change log
Make prefixes unique per test
## 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 applicable)
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