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https://issues.apache.org/jira/browse/HBASE-20997?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16569492#comment-16569492
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huaxiang sun commented on HBASE-20997:
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Hi [[email protected]], I checked the branch-2 code, the AMv2 handling of
this logic is different. It does not maintain the in-memory map and rely on
this map to do unassignment. I think it is a no-issue for branch-2 +. Thanks.
> rebuildUserRegions() does not build ReplicaMapping during master switchover
> ---------------------------------------------------------------------------
>
> Key: HBASE-20997
> URL: https://issues.apache.org/jira/browse/HBASE-20997
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 1.2.6, 1.3.2, 1.5.0, 1.4.6
> Reporter: huaxiang sun
> Assignee: huaxiang sun
> Priority: Major
> Attachments: HBASE-20997-branch-1-v1.patch,
> HBASE-20997-branch-1-v2.patch, HBASE-20997-branch-1-v4.patch,
> HBASE-20997-branch-1-v5.patch, HBASE-20997-branch-1-v6.patch
>
>
> During master switchover, rebuildUserRegions() does not rebuild master
> in-memory defaultReplicaToOtherReplicas map. This puts the cluster in an
> inconsistent state. In read replica case, it causes replica parent region
> stay online without being unassigned.
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