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https://issues.apache.org/jira/browse/HDFS-4035?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eli Collins updated HDFS-4035:
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Status: Patch Available (was: Open)
> LightWeightGSet and LightWeightHashSet increment a volatile without
> synchronization
> -----------------------------------------------------------------------------------
>
> Key: HDFS-4035
> URL: https://issues.apache.org/jira/browse/HDFS-4035
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: 2.0.0-alpha
> Reporter: Eli Collins
> Assignee: Eli Collins
> Attachments: hdfs-4035.txt
>
>
> LightWeightGSet and LightWeightHashSet have a volatile modification field
> that they use to detect updates while iterating so they can throw a
> ConcurrentModificationException. Since these "LightWeight" classes are
> explicitly "not thread safe" (eg access to their members is not synchronized)
> then the current use is OK, we just need to update findbugsExcludeFile.xml to
> exclude them.
>
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