XComp opened a new pull request #18749:
URL: https://github.com/apache/flink/pull/18749


   ## What is the purpose of the change
   
   I missed adding the `GloballyCleanableResource` to `JobManagerMetricGroup` 
and adding it to the `DispatcherResourceCleanerFactory` under global cleanup 
resources. This would cause the `JobManagerMetricGroup` not being cleaned up 
after a global cleanup.
   
   ## Brief change log
   
   * Makes `JobManagerMetricGroup` implement `GloballyCleanableResource`
   * Adds `JobManagerMetricGroup` to `DispatcherResourceCleanerFactory`'s 
`ResourceCleaner` instantiation for global cleanup
   
   ## Verifying this change
   
   * The corresponding tests `DispatcherResourceCleanerFactory` and 
`JobManagerGroupTest` were extended to cover the functionality
   
   ## 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, Kubernetes/Yarn, 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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