[jira] [Created] (FLINK-14303) Factor resource manager related metrics out of JobManagerMetricGroup

["Till Rohrmann (Jira)" <ji...@apache.org>]

Till Rohrmann created FLINK-14303:
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             Summary: Factor resource manager related metrics out of JobManagerMetricGroup
                 Key: FLINK-14303
                 URL: https://issues.apache.org/jira/browse/FLINK-14303
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Coordination, Runtime / Metrics
    Affects Versions: 1.10.0
            Reporter: Till Rohrmann
            Assignee: Till Rohrmann
             Fix For: 1.10.0


At the moment, we use the {{JobManagerMetricGroup}} to report resource manager specific metrics such as the number of slots or registered {{TaskExecutors}}. Since the {{JobManagerMetricGroup}} is shared between the {{ResourceManager}} and the {{Dispatcher}} this prevents closing the {{JobManagerMetricGroup}} from the {{Dispatcher}}. 

In order to solve this problem, I propose to introduce a {{ResourceManagerMetricGroup}} which is used by the {{ResourceManager}} to register resource manager specific metrics. In order to not break existing third party applications which rely on the current metrics layout, the {{ResourceManagerMetricGroup}} will use the scope and group name of the {{JobManagerMetricGroup}}.



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