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https://issues.apache.org/jira/browse/FLUME-2420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14131835#comment-14131835
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Hari Shreedharan edited comment on FLUME-2420 at 9/12/14 5:56 PM:
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+1. Committing this after running tests. I added a synchronized block around
the clear call at the end of stop as well to fix possible contention with other
threads, though any others calling back to sfWriters should be shutdown by then
as the executor is shutdown before that.
was (Author: hshreedharan):
+1. Committing this after running tests. I added a synchronized block around
the clear call at the end of stop as well to fix possible contention with other
threads.
> 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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