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https://issues.apache.org/jira/browse/FLUME-2128?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13804598#comment-13804598
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Hari Shreedharan commented on FLUME-2128:
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I will take a look at it today.
> HDFS Sink rollSize is calculated based off of uncompressed size of cumulative
> events.
> -------------------------------------------------------------------------------------
>
> Key: FLUME-2128
> URL: https://issues.apache.org/jira/browse/FLUME-2128
> Project: Flume
> Issue Type: Bug
> Components: Sinks+Sources
> Affects Versions: v1.4.0, v1.3.1
> Reporter: Jeff Lord
> Assignee: Ted Malaska
> Labels: features
> Attachments: FLUME-2128-0.patch, FLUME-2128-1.patch
>
>
> The hdfs sink rollSize parameter is compared against uncompressed event sizes.
> The net of this is that if you are using compression and expect the size of
> your files on HDFS to be rolled/sized based on the value set for rollSize
> than your files will be much smaller due to compression.
> We should take into account when compression is set and roll based on the
> compressed size on hdfs.
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