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https://issues.apache.org/jira/browse/MAPREDUCE-3749?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mahadev konar updated MAPREDUCE-3749:
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Component/s: mrv2
> ConcurrentModificationException in counter groups
> -------------------------------------------------
>
> Key: MAPREDUCE-3749
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3749
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 0.23.0
> Reporter: Tom White
> Priority: Blocker
>
> Iterating over a counter's groups while adding more groups will cause a
> ConcurrentModificationException.
> This was found while running Hive unit tests against a recent 0.23 version.
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