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https://issues.apache.org/jira/browse/KAFKA-2112?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14487830#comment-14487830
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Yasuhiro Matsuda commented on KAFKA-2112:
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Created reviewboard https://reviews.apache.org/r/33028/diff/
against branch origin/trunk
> make overflowWheel volatile
> ---------------------------
>
> Key: KAFKA-2112
> URL: https://issues.apache.org/jira/browse/KAFKA-2112
> Project: Kafka
> Issue Type: Bug
> Components: purgatory
> Reporter: Yasuhiro Matsuda
> Assignee: Joel Koshy
> Attachments: KAFKA-2112.patch
>
>
> overflowWheel in TimingWheel needs to be volatile due to the issue of
> Double-Checked Locking pattern with JVM.
> http://www.cs.umd.edu/~pugh/java/memoryModel/DoubleCheckedLocking.html
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