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https://issues.apache.org/jira/browse/FLUME-2595?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14493133#comment-14493133
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Hari Shreedharan commented on FLUME-2595:
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Ah, so the issue is that the withCheckpoint tests actually reuse the
originalCheckpoint directory. So once one of the tests run, we update the
checkpoint directory when we close the channel with the "new" state of the
channel with all events taken out - so the next test sees an emptry channel. It
is a test bug. I am going to fix it and upload a patch in a few mins.
> Add option to checkpoint on file channel shutdown
> -------------------------------------------------
>
> Key: FLUME-2595
> URL: https://issues.apache.org/jira/browse/FLUME-2595
> Project: Flume
> Issue Type: Bug
> Components: File Channel
> Affects Versions: v1.5.1
> Reporter: Roshan Naik
> Assignee: Roshan Naik
> Labels: channel
> Attachments: FLUME-2595.patch, FLUME-2595.v2.patch,
> FLUME-2595.v3.patch, FLUME-2595.v4.patch
>
>
> Restarting a File channel based agent can take very long, a few hours to
> evens days in some cases. The reason being the slow replay performance.
> By having the file channel checkpoint on shutdown, this long replay can
> avoided as there will be nothing to replay on startup.
> A small hit (a few seconds perhaps) will be observed on shutdown to perform
> the checkpoint.
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