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https://issues.apache.org/jira/browse/HBASE-20847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16538649#comment-16538649
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stack commented on HBASE-20847:
-------------------------------
I +1'd this patch up on rb. Its cleanup and the refactors to lockAndQueue are
improvements pushing down the messy parent checking distributed around the
codebase. I agree with the trySharedLock change.
> The parent procedure of RegionTransitionProcedure may not have the table lock
> -----------------------------------------------------------------------------
>
> Key: HBASE-20847
> URL: https://issues.apache.org/jira/browse/HBASE-20847
> Project: HBase
> Issue Type: Sub-task
> Components: proc-v2, Region Assignment
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Major
> Attachments: HBASE-20847-v1.patch, HBASE-20847-v2.patch,
> HBASE-20847.patch
>
>
> For example, SCP can also schedule AssignProcedure and obviously it will not
> hold the table lock.
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