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https://issues.apache.org/jira/browse/HBASE-13007?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14317684#comment-14317684
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Hudson commented on HBASE-13007:
--------------------------------

FAILURE: Integrated in HBase-TRUNK #6120 (See 
[https://builds.apache.org/job/HBase-TRUNK/6120/])
HBASE-13007 Fix the test timeouts being caused by ChoreService (Jonathan 
Lawlor); ADDENDUM (stack: rev 8aa4eeb1c87104710fb55c1f0a2bf48644a2735d)
* hbase-common/src/main/java/org/apache/hadoop/hbase/ScheduledChore.java
* hbase-common/src/test/java/org/apache/hadoop/hbase/TestChoreService.java
* hbase-common/src/main/java/org/apache/hadoop/hbase/ChoreService.java


> Fix the test timeouts being caused by ChoreService 
> ---------------------------------------------------
>
>                 Key: HBASE-13007
>                 URL: https://issues.apache.org/jira/browse/HBASE-13007
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Jonathan Lawlor
>            Assignee: Jonathan Lawlor
>             Fix For: 2.0.0, 1.1.0
>
>         Attachments: HBASE-13007-v1.patch, HBASE-13007-v2.patch, 
> HBASE-13007-v2.patch, HBASE-13007-v2.patch
>
>
> TestChoreService has been seen timing out in recent builds and the timeouts 
> seem to be rooted in how the ChoreService cancels its chores when being 
> shutdown. The issue is that during shutdown, the ChoreService calls 
> synchronized methods on the ScheduledChore which could cause indefinite 
> blocking if the scheduled chore is hanging in a synchronized method. We 
> should instead call the appropriate cancel method within the ChoreService and 
> add logic into ScheduledChores that allows them to realize when they have 
> been cancelled.



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