tillrohrmann opened a new pull request #7928: [FLINK-11850][zk] Tolerate concurrent child deletions when deleting owned zNode URL: https://github.com/apache/flink/pull/7928 ## What is the purpose of the change When calling ZooKeeperHaServices#closeAndCleanupAllData it can happen that a child of the owned zNode of the ZooKeeperHaServices is being concurrently deleted (e.g. a LeaderElectionService has been shut down). In order to tolerate concurrent deletions, we use now ZKPaths#deleteChildren. ## Verifying this change - Covered by existing `ZooKeeperHaServicesTest` ## 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: (yes) - 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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