[jira] [Created] (FLINK-4466) Add a metric availability test.

[Shang Yuanchun (Jira)]

Stephan Ewen created FLINK-4466:
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             Summary: Add a metric availability test.
                 Key: FLINK-4466
                 URL: https://issues.apache.org/jira/browse/FLINK-4466
             Project: Flink
          Issue Type: Improvement
          Components: Metrics
    Affects Versions: 1.1.1
            Reporter: Stephan Ewen
             Fix For: 1.2.0


With bigger merges and rebases, it is possible to accidentally remove metrics.

I suggest to add a mini cluster test that checks whether a set of metrics are registered at the TaskManager and JobManager.



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