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https://issues.apache.org/jira/browse/HBASE-19616?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack reopened HBASE-19616:
---------------------------
Reopening to apply to branch-2.
Thanks for the detail [~belugabehr]
> Review of LogCleaner Class
> --------------------------
>
> Key: HBASE-19616
> URL: https://issues.apache.org/jira/browse/HBASE-19616
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 3.0.0
> Reporter: BELUGA BEHR
> Assignee: BELUGA BEHR
> Priority: Minor
> Fix For: 3.0.0
>
> Attachments: HBASE-19616.1.patch, HBASE-19616.2.patch,
> HBASE-19616.3.patch, HBASE-19616.branch-2.patch
>
>
> * Parameterize logging
> * Remove compiler-reported dead code to re-enabling useful logging
> * Use ArrayList instead of LinkedList
> Used a CountDownLatch to replace a bunch of the existing code. It currently
> loops with a 500ms interval to check if some sort of condition has been met
> until the amount of time spent looping is greater than some timeout value.
> Using a CountDownLatch allows one or more threads to wait until a set of
> operations being performed in other threads completes. It will not blindly
> sleep between checks and it will return immediately after the condition is
> met. This removes the HBase configuration that controls the sleep interval.
>
> I also cleaned up the unit tests a bit and enhanced the logging of this class
> to ease troubleshooting.
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