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https://issues.apache.org/jira/browse/FLUME-889?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13189032#comment-13189032
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Juhani Connolly commented on FLUME-889:
---------------------------------------

While going through the thread safety issues, it turned out that the channel 
itself has some problems which I made another JIRA for along with a test-case 
to demonstrate it https://issues.apache.org/jira/browse/FLUME-936
                
> All events in memory channel are lost on reconfiguration
> --------------------------------------------------------
>
>                 Key: FLUME-889
>                 URL: https://issues.apache.org/jira/browse/FLUME-889
>             Project: Flume
>          Issue Type: Bug
>          Components: Channel
>    Affects Versions: NG alpha 1, NG alpha 2
>            Reporter: Shu Zhang
>            Assignee: Shu Zhang
>             Fix For: v1.1.0
>
>         Attachments: FLUME-889-2.patch
>
>
> this line is at the end MemoryChannel.configure(Context)
>     queue = new LinkedBlockingDeque<StampedEvent>(capacity);
> memory channel is meant to be dynamically configurable, however every time 
> it's reconfigured, all existing events are dropped.

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