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https://issues.apache.org/jira/browse/HBASE-22061?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16795724#comment-16795724
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Duo Zhang commented on HBASE-22061:
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Do we hold the lock for the daughter region when merging?
> SplitTableRegionProcedure should hold the lock of its daughter regions
> ----------------------------------------------------------------------
>
> Key: HBASE-22061
> URL: https://issues.apache.org/jira/browse/HBASE-22061
> Project: HBase
> Issue Type: Bug
> Reporter: Jingyun Tian
> Priority: Major
>
> Currently SplitTableRegionProcedure only hold the region of parent region.
> But during processing of this procedure, after the daughter regions are
> updated to meta, other procedures can grab the lock of them, which is the
> situation we don't want to see.
> So I think SplitTableRegionProcedure should hold the lock of parent region
> and its daughter regions like MergeTableRegionsProcedure.
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