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https://issues.apache.org/jira/browse/HBASE-8899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13706071#comment-13706071
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Jimmy Xiang commented on HBASE-8899:
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Integrated the addendum into trunk and 0.95. It is a racing issue between
closing and opening the same region on the same region server.
> Could not open a region on a server where it is being closed
> ------------------------------------------------------------
>
> Key: HBASE-8899
> URL: https://issues.apache.org/jira/browse/HBASE-8899
> Project: HBase
> Issue Type: Bug
> Components: Region Assignment
> Reporter: Jimmy Xiang
> Assignee: Jimmy Xiang
> Priority: Minor
> Fix For: 0.98.0, 0.95.2
>
> Attachments: trunk-8899.addendum, trunk-8899.patch,
> trunk-8899_v2.patch
>
>
> Looked into the failure of an AM none-flaky test:
> http://54.241.6.143/job/HBase-0.95-Hadoop-2/org.apache.hbase$hbase-server/583/testReport/org.apache.hadoop.hbase.master/TestAssignmentManagerOnCluster/testForceAssignWhileClosing/
> The test failed to open a region on a server where the region was being
> closed. Region server just returned ALREADY_OPENED while the region was
> actually being closed.
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