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https://issues.apache.org/jira/browse/HDFS-11251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15768763#comment-15768763
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Yiqun Lin commented on HDFS-11251:
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Thanks for providing the patch, [~manojg]. The patch almost looks good to me,
only some comments for your test. I ran the test in my local, it can run well
without using {{CopyOnWriteArrayList}}. Can you add the test that can trigger
the CME here as you mentioned in your comments? I think this will be good to
test for this. Thanks.
> ConcurrentModificationException during DataNode#refreshVolumes
> --------------------------------------------------------------
>
> Key: HDFS-11251
> URL: https://issues.apache.org/jira/browse/HDFS-11251
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.0.0-alpha2
> Reporter: Jason Lowe
> Assignee: Manoj Govindassamy
> Attachments: HDFS-11251.01.patch
>
>
> The testAddVolumesDuringWrite case failed with a ReconfigurationException
> which appears to have been caused by a ConcurrentModificationException.
> Stacktrace details to follow.
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