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https://issues.apache.org/jira/browse/HBASE-23006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16926505#comment-16926505
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Duo Zhang commented on HBASE-23006:
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Let's see if the newly introduced UT fails.
> RSGroupBasedLoadBalancer should also try to place replicas for the same
> region to different region servers
> ----------------------------------------------------------------------------------------------------------
>
> Key: HBASE-23006
> URL: https://issues.apache.org/jira/browse/HBASE-23006
> Project: HBase
> Issue Type: Bug
> Components: Region Assignment, rsgroup
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Major
> Attachments: HBASE-23006-UT.patch
>
>
> Found this when implementing HBASE-22971. TestSCPWithReplicas fails when
> RSGroupBasedLoadBalancer is enabled.
> And this can be reproduced by a UT on master branch too. I think the problem
> is that in RSGroupBasedLoadBalancer.retainAssignment we do not consider
> region replicas.
> We should fix this.
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