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https://issues.apache.org/jira/browse/HBASE-14407?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14909095#comment-14909095
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Hudson commented on HBASE-14407:
--------------------------------
FAILURE: Integrated in HBase-1.3 #209 (See
[https://builds.apache.org/job/HBase-1.3/209/])
HBASE-14407 NotServingRegion: hbase region closed forever (Shuaifeng Zhou)
(apurtell: rev 0dd57174fa218598e7877ea172aa46f82e5d7ded)
*
hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
> NotServingRegion: hbase region closed forever
> ---------------------------------------------
>
> Key: HBASE-14407
> URL: https://issues.apache.org/jira/browse/HBASE-14407
> Project: HBase
> Issue Type: Bug
> Components: Region Assignment
> Affects Versions: 0.98.10, 1.2.0, 1.1.2, 1.3.0
> Reporter: Shuaifeng Zhou
> Assignee: Shuaifeng Zhou
> Priority: Critical
> Fix For: 1.2.0, 1.3.0, 0.98.15, 1.0.3, 1.1.3
>
> Attachments: 14407-0.98.patch, 14407-branch-1.1.patch,
> 14407-branch-1.2.patch, hbase-14407-0.98.patch, hbase-14407-1.1.patch,
> hbase-14407-1.2.patch, hs4.log, master.log
>
>
> I found a situation may cause region closed forever, and this situation
> happend usually on my cluster, version is 0.98.10, but 1.1.2 also have the
> problem:
> 1, master send region open to regionserver
> 2, rs open a handler do openregion
> 3, rs return resopnse to master
> 3, master not received the response, or timeout, send open region again
> 4, rs already opened the region
> 5, master processAlreadyOpenedRegion, update regionstate open in master
> memory
> 6, master received zk message region opened(for some reason late, eg: net
> work), and triger update regionstate open, but find that region already
> opened, ERROR!
> 7, master send close region, and region be closed forever.
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