tillrohrmann opened a new pull request #6827: [FLINK-10530][tests] Harden ProcessFailureCancelingITCase and AbstractTaskManagerProcessFailureRecovery URL: https://github.com/apache/flink/pull/6827 ## What is the purpose of the change The problem is that the Dispatcher actor is being started before it gains leadership. When using the standalone high availability services, then we don't wait until the Dispatcher has confirmed its leader session id. We only wait until the actor has become available. Due to that it can happen that we try to send a RPC message to the Dispatcher before it has actually set its leader session id. This commit adds a helper function which waits until the Dispatcher has become available and has set its leader session id. The proper way to handle this situation would be to move the leader ship grant and revokal out of the Dispatcher into a DispatcherRunner which creates a Dispatcher actor once it gained leadership. ## Verifying this change - Covered by the hardened tests ## 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 applicable)
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