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https://issues.apache.org/jira/browse/FLINK-4054?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chesnay Schepler closed FLINK-4054.
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Resolution: Fixed
> 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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