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https://issues.apache.org/jira/browse/HBASE-28224?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17795951#comment-17795951
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Becker Ewing commented on HBASE-28224:
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[~mjhale] I've posted a PR that fixes this issue here:
[https://github.com/apache/hbase/pull/5578]
> ClientSideRegionScanner appears not to shutdown MobFileCache
> ------------------------------------------------------------
>
> Key: HBASE-28224
> URL: https://issues.apache.org/jira/browse/HBASE-28224
> Project: HBase
> Issue Type: Bug
> Components: Scanners
> Affects Versions: 2.5.5
> Reporter: Mark Hale
> Assignee: Becker Ewing
> Priority: Minor
>
> As far as I can tell from the code, and also what I see in jstack,
> ClientSideRegionScanner doesn't appear to shutdown it's MobFileCache. After
> doing a lot of scanning of a snapshot, application threads are polluted with
> a lot of MobFileCache ScheduledThreadPoolExecutors that never seem to get
> cleaned up.
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