[jira] [Created] (STORM-3748) prevent concurrent modification when fetching v2 metrics

[Aaron Gresch (Jira)]

Aaron Gresch created STORM-3748:
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             Summary: prevent concurrent modification when fetching v2 metrics
                 Key: STORM-3748
                 URL: https://issues.apache.org/jira/browse/STORM-3748
             Project: Apache Storm
          Issue Type: Bug
            Reporter: Aaron Gresch
            Assignee: Aaron Gresch


a user reported a ConcurrentModificationException when retrieving metric names 
in 

StormMetricRegistry getMetricNameMap().



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