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https://issues.apache.org/jira/browse/HBASE-8803?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13694044#comment-13694044
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stack commented on HBASE-8803:
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Can you make this new behavior optional? Or at least how many to do at a time
a parameter (max concurrent threads moving and restoring)?
Folks want the fast rolling restart for sure -- I know for a fact that a few of
your customers need it (smile) -- but the good thing about the old behavior is
that it was minimally disruptive (though slow) so is good for a cluster that is
doing hard serving.
Thanks for working on this important operational issue [~jmspaggi]
> region_mover.rb should move multiple regions at a time
> ------------------------------------------------------
>
> Key: HBASE-8803
> URL: https://issues.apache.org/jira/browse/HBASE-8803
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.98.0, 0.94.8, 0.95.1
> Reporter: Jean-Marc Spaggiari
> Assignee: Jean-Marc Spaggiari
> Attachments: HBASE-8803-v0-trunk.patch
>
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> When there is many regions in a cluster, rolling_restart can take hours
> because region_mover is moving the regions one by one.
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