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https://issues.apache.org/jira/browse/HDFS-9782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15168079#comment-15168079
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Robert Kanter commented on HDFS-9782:
-------------------------------------

The unit parsing stuff isn't a blocker for me either.  Hopefully that will all 
get consolidated eventually.  Though I agree with [~andrew.wang]'s earlier 
comment to use TimeUnit.convert.

A 30 second default sounds good to me.

> RollingFileSystemSink should have configurable roll interval
> ------------------------------------------------------------
>
>                 Key: HDFS-9782
>                 URL: https://issues.apache.org/jira/browse/HDFS-9782
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Daniel Templeton
>            Assignee: Daniel Templeton
>         Attachments: HDFS-9782.001.patch, HDFS-9782.002.patch, 
> HDFS-9782.003.patch, HDFS-9782.004.patch
>
>
> Right now it defaults to rolling at the top of every hour.  Instead that 
> interval should be configurable.  The interval should also allow for some 
> play so that all hosts don't try to flush their files simultaneously.
> I'm filing this in HDFS because I suspect it will involve touching the HDFS 
> tests.  If it turns out not to, I'll move it into common instead.



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