[jira] [Created] (FLINK-4054) Inconsistent Reporter synchronization within report()

[Shang Yuanchun (Jira)]

Chesnay Schepler created FLINK-4054:
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             Summary: Inconsistent Reporter synchronization within report()
                 Key: FLINK-4054
                 URL: https://issues.apache.org/jira/browse/FLINK-4054
             Project: Flink
          Issue Type: Improvement
          Components: Metrics
    Affects Versions: 1.1.0
            Reporter: Chesnay Schepler
            Priority: Critical
             Fix For: 1.1.0


There are currently 2 distinct approaches to how added/removed metrics are handled while a Reporter is in report().

The StatsDReporter simply catches possible exceptions (ConcurrentModificationException/NoSuchElementException) and reports the next time, while all other reporters access the metrics in a synchronized block.

We should have a clear line as to which approach people should use.

Whether FLINK-3998 is a valid issue depends on this decision.



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