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https://issues.apache.org/jira/browse/HBASE-20881?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16542472#comment-16542472
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Duo Zhang commented on HBASE-20881:
-----------------------------------
I think a possible way to fix is that, adding the RegionTransitionProcedure to
RegionStateNode before scheduling, and in merge or split procedure, if we find
out that we there is still a RIT procedure for the region, then we abort the
procedure and release the lock.
> Introduce a region transition procedure to handle all the state transition
> for a region
> ---------------------------------------------------------------------------------------
>
> Key: HBASE-20881
> URL: https://issues.apache.org/jira/browse/HBASE-20881
> Project: HBase
> Issue Type: Sub-task
> Reporter: Duo Zhang
> Priority: Major
>
> Now have an AssignProcedure, an UnssignProcedure, and also a
> MoveRegionProcedure which schedules an AssignProcedure and an
> UnssignProcedure to move a region. This makes the logic a bit complicated, as
> MRP is not a RIT, so when SCP can not interrupt it directly...
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