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https://issues.apache.org/jira/browse/HBASE-22365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16833493#comment-16833493
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Duo Zhang commented on HBASE-22365:
-----------------------------------
{noformat}
[WARNING] Flakes:
[WARNING]
org.apache.hadoop.hbase.master.assignment.TestSCPGetRegionsRace.test(org.apache.hadoop.hbase.master.assignment.TestSCPGetRegionsRace)
[ERROR] Run 1: TestSCPGetRegionsRace.test:216 expected null, but
was:<Assign,,1557079960191.f27fa6f9158ad1721a9d455593308bd9.>
[INFO] Run 2: PASS
{noformat}
OK, at least it could fail...
Let me prepare the fix.
> Region may be opened in two RegionServers
> -----------------------------------------
>
> Key: HBASE-22365
> URL: https://issues.apache.org/jira/browse/HBASE-22365
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 3.0.0, 2.2.0, 2.3.0
> Reporter: Guanghao Zhang
> Assignee: Duo Zhang
> Priority: Blocker
> Attachments: HBASE-22365-UT.patch
>
>
> Found this problem when run ITBLL with our internal branch which is based on
> branch-2.2. So mark this as a blocker for 2.2.0. A region
> 7ebdca9cd09e26074749b546586e2156 is moved from RS-st99 to RS-st98 and the
> TRSP succeed. Meanwhile, RS-st99 crashed and schedule a new SCP for RS-st99.
> So SCP initialized subprocedures for 7ebdca9cd09e26074749b546586e2156, too.
> Then the 7ebdca9cd09e26074749b546586e2156 was assigned to two RegionServers.
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