zhengcanbin opened a new pull request #11458: [FLINK-16625][k8s] Extract BootstrapTools#getEnvironmentVariables to a general utility in ConfigurationUtils URL: https://github.com/apache/flink/pull/11458 ## What is the purpose of the change `BootstrapTools#getEnvironmentVariables` actually is a general utility to extract key-value pairs with specified prefix trimmed from the Flink Configuration object. It can not only be used to extract customized environment variables in the YARN setup but also for customized annotations/labels/node-selectors in the Kubernetes setup. This ticket proposes to rename it to `ConfigurationUtils#getPrefixedKeyValuePairs` and move it to the flink-core module as a more general utility to share for the YARN/Kubernetes setup. ## Verifying this change This change added tests. ## 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, Kubernetes/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**)
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