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https://issues.apache.org/jira/browse/FLUME-1616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13464930#comment-13464930
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Brock Noland commented on FLUME-1616:
-------------------------------------
Note that this is an exceedingly rare case in addition when the underlying disk
starts throwing errors it's likely the aqent will be stopped and the replay
will put the taken events back on the queue.
> FileChannel will lose data in when rollback fails with IOException
> ------------------------------------------------------------------
>
> Key: FLUME-1616
> URL: https://issues.apache.org/jira/browse/FLUME-1616
> Project: Flume
> Issue Type: Bug
> Components: Channel
> Reporter: Brock Noland
> Fix For: v1.3.0
>
>
> In doRollback we write to the log first and then to the queue. If the log
> write fails the takes will be lost unless the agent is stopped quickly and
> the events are replayed. I think in the case of an IOException we should
> still put the events back on the queue.
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