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From "Phabricator (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4742) Split dead server's log in parallel
Date Sat, 05 Nov 2011 05:34:52 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13144599#comment-13144599

Phabricator commented on HBASE-4742:

mbautin has commented on the revision "[jira] [HBASE-4742] Split dead server's log in parallel".

  src/main/java/org/apache/hadoop/hbase/master/ProcessServerShutdown.java:312 Ted: yes, that
is correct. However, there could be a considerable number of unique servers to split logs
for, and some throttling of the number of concurrent log splitting threads might still be


> 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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