packet23 opened a new pull request #6540: [FLINK-9891] Added hook to shutdown cluster if a session was created in per-job mode. URL: https://github.com/apache/flink/pull/6540 ## What is the purpose of the change Change minimizes probability of a per-job yarn session cluster surviving after client exited. It restores the Flink 1.4 and below cli behaviour. ## Brief change log - when per-job yarn cluster is deployed, a shutdown hook installed - when shutdown hook is called, it terminates the deployed cluster - when cli terminates normally, shutdown hook is called by cli and deinstalled - otherwise, java runtime will call shutdown hook ## Verifying this change We verified the change manually by submitting a DataSet API application to Yarn and killing client before job terminated. ## 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, 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? not documented
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