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https://issues.apache.org/jira/browse/HBASE-20881?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16577432#comment-16577432
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Duo Zhang commented on HBASE-20881:
-----------------------------------

Rebase.

> 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
>          Components: amv2, proc-v2
>            Reporter: Duo Zhang
>            Assignee: Duo Zhang
>            Priority: Major
>             Fix For: 3.0.0, 2.2.0
>
>         Attachments: HBASE-20881-v1.patch, HBASE-20881-v2.patch, 
> HBASE-20881-v3.patch, HBASE-20881-v4.patch, HBASE-20881-v4.patch, 
> HBASE-20881-v5.patch, HBASE-20881-v6.patch, HBASE-20881-v7.patch, 
> HBASE-20881.patch
>
>
> 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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