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https://issues.apache.org/jira/browse/HBASE-22642?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16903662#comment-16903662
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Xiaolin Ha commented on HBASE-22642:
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Ping [~xucang] for reviewing.
> Make move operations of RSGroup idempotent
> ------------------------------------------
>
> Key: HBASE-22642
> URL: https://issues.apache.org/jira/browse/HBASE-22642
> Project: HBase
> Issue Type: Bug
> Components: rsgroup
> Reporter: Xiaolin Ha
> Assignee: Xiaolin Ha
> Priority: Major
>
> Currently, when moving tables or servers to a group, only groupInfo is
> checked. And in RSGroup implementation, groupinfo is written to disk before
> regions movements are done. If there are some problems caused move regions
> abort, some regions will be on wrong regionservers. What's the worse, retry
> the move operation will be rejected because of the correct groupinfo.
> We think when moving, not only groupInfo should be checked, but also relevant
> region assignments should be checked and corrected.
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