mxm opened a new pull request #11473: [FLINK-16705] Ensure MiniCluster shutdown does not interfere with JobResult retrieval URL: https://github.com/apache/flink/pull/11473 ## What is the purpose of the change There is a race condition in `LocalExecutor` between (a) shutting down the cluster when the job has finished and (b) the client which retrieves the result of the job execution. This was observed in Beam, running a large test suite with the Flink Runner. ## Brief change log We should make sure the job result retrieval and the cluster shutdown do not interfere. This adds a PerJobMiniClusterClient which guarantees that. ## Verifying this change This change added tests, see `PerJobMiniClusterClientTest` and `LocalExecutorITCase`. ## 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/Mesos, 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? (JavaDocs)
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