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https://issues.apache.org/jira/browse/HBASE-4742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13144894#comment-13144894
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Phabricator commented on HBASE-4742:
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mbautin has commented on the revision "[jira] [HBASE-4742] Split dead server's
log in parallel".
Liyin, could you please clarify how that single thread is going to control
log splitting done remotely by multiple regionservers in parallel? Would that
be some kind of an event loop? If that is easier than fixing the race
conditions in HMaster you are concerned about, I'm fine with it. Or, as another
alternative, we could test the existing solution more thoroughly.
REVISION DETAIL
https://reviews.facebook.net/D237
> Split dead server's log in parallel
> -----------------------------------
>
> Key: HBASE-4742
> URL: https://issues.apache.org/jira/browse/HBASE-4742
> Project: HBase
> Issue Type: Improvement
> Reporter: Liyin Tang
> Assignee: Liyin Tang
> Attachments: D237.1.patch, D237.2.patch, D237.3.patch, D237.4.patch
>
>
> When one region server goes down, the master will shutdown the region server
> and split its log.
> However, splitting log is a blocking call and it would take some time.
> If more than one region server go down, the master will split its log one by
> one, which is not efficient.
> Since we have the distributed log split, we could split these logs from the
> dead servers in parallel.
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