tillrohrmann opened a new pull request #7880: [FLINK-11336][zk] Delete ZNodes when ZooKeeperHaServices#closeAndCleanupAllData URL: https://github.com/apache/flink/pull/7880 ## What is the purpose of the change When calling ZooKeeperHaServices#closeAndCleanupAllData we should delete the HA_CLUSTER_ID znode which is owned by the respective ZooKeeperHaServices. Moreover, the method tries to go up the chain of parent znodes and tries to delete all empty parent nodes. This should clean up otherwisely orphaned parent znodes. ## Verifying this change - Added `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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