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https://issues.apache.org/jira/browse/FLUME-2309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13888801#comment-13888801
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Hari Shreedharan commented on FLUME-2309:
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Makes sense to me. It should be a simple fix, but we must document it - since
older files might get sent only very late. Maybe we can me it smarter even when
we sort? Reuse the sorted list until it is empty to avoid a sort every time
(not sure if we already do this).
> Spooling directory should not always consume the oldest file first.
> -------------------------------------------------------------------
>
> Key: FLUME-2309
> URL: https://issues.apache.org/jira/browse/FLUME-2309
> Project: Flume
> Issue Type: New Feature
> Reporter: Muhammad Ehsan ul Haque
> Priority: Minor
>
> The ReliableSpoolingFileEventReader reads the oldest file in the spooling
> directory first. This is done by listing the directory contents and then
> sorting file list based on timestamp. This may be very slow if there are a
> lot of files (of the order of 100K or more) in the directory.
> However, this is not always needed, there can be simple cases in which the
> order to consume the file is not important.
> There should be an option of consuming the files in arbitrary order, allowing
> the files to be consumed quickly without any delay.
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