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https://issues.apache.org/jira/browse/HBASE-13560?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14566284#comment-14566284
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Changgeng Li commented on HBASE-13560:
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it should always be running. That's only for unit test purpose because
originally the test was to verify the small compaction queue, and the newly
introduced change would make large thread pool steal the jobs and will break
this test. So this line is to disable the large compaction thread pool so that
it won't steal jobs.
> Large compaction queue should steal from small compaction queue when idle
> -------------------------------------------------------------------------
>
> Key: HBASE-13560
> URL: https://issues.apache.org/jira/browse/HBASE-13560
> Project: HBase
> Issue Type: Bug
> Components: Compaction
> Affects Versions: 2.0.0
> Reporter: Elliott Clark
> Assignee: Changgeng Li
> Attachments: queuestealwork-v1.patch, queuestealwork-v4.patch,
> queuestealwork-v5.patch, queuestealwork-v6.patch, queuestealwork-v7.patch
>
>
> If you tune compaction threads so that a server is never over commited when
> large and small compaction threads are busy then it should be possible to
> have the large compactions steal work.
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