1u0 opened a new pull request #7858: [FLINK-11127] Update Kubernetes resources: workaround to make TM reachable from JM in Kubernetes URL: https://github.com/apache/flink/pull/7858 ## What is the purpose of the change * This PR adds configuration update (Kubernetes resource definitions) as workaround for [[FLINK-11127]](https://issues.apache.org/jira/browse/FLINK-11127) for Flink `1.7` release branch. With this change, the TMs should be advertising themselves to JM using their k8s pods' ip addresses instead of (by default) hostnames. **NB:** this patch is supposed only for Flink `1.7` release branch. Flink `1.8` and higher have introduced a new configuration option to mitigate this (`taskmanager.network.bind-policy`). ## Brief change log - Example Kubernetes resources are updated to use pods ip address as TMs host address ## Verifying this change This change is a trivial rework / code cleanup without any test coverage. - Manually verified the change by running a cluser with 1 JobManagers and 2 TaskManagers in a minikube. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (yes / **no**) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / **no**) - The serializers: (yes / **no** / don't know) - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (**yes** / no / don't know) - The S3 file system connector: (yes / **no** / don't know) ## Documentation - Does this pull request introduce a new feature? (yes / **no**) - If yes, how is the feature documented? (**not applicable** / docs / JavaDocs / not documented)
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