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https://issues.apache.org/jira/browse/FLUME-2420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14131870#comment-14131870
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ASF subversion and git services commented on FLUME-2420:
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Commit 4e08bf7d38bea365d35a6d391d1507a129cc9ba9 in flume's branch
refs/heads/trunk from [~hshreedharan]
[ https://git-wip-us.apache.org/repos/asf?p=flume.git;h=4e08bf7 ]
FLUME-2420. HDFS Bucketwriter must access sfWriters map only within
synchronized blocks.
(chenshangan via Hari)
> HDFSEventSink#stop might throw ConcurrentModificationException
> --------------------------------------------------------------
>
> Key: FLUME-2420
> URL: https://issues.apache.org/jira/browse/FLUME-2420
> Project: Flume
> Issue Type: Bug
> Components: Sinks+Sources
> Affects Versions: v1.5.0
> Reporter: chenshangan
> Assignee: chenshangan
> Attachments: FLUME-2420.patch
>
>
> There's a chance that bucketWriter callback and HDFSEventSink#stop operate on
> sfWriter together. So synchronized should apply before operation on sfWriter.
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