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Posted to issues@hbase.apache.org by "Phabricator (Updated) (JIRA)" <ji...@apache.org> on 2011/11/04 07:29:40 UTC

[jira] [Updated] (HBASE-4742) Split dead server's log in parallel

     [ https://issues.apache.org/jira/browse/HBASE-4742?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Phabricator updated HBASE-4742:
-------------------------------

    Attachment: D237.1.patch

Liyin requested code review of "[jira] [HBASE-4742] Split dead server's log in parallel".
Reviewers: Kannan, khemani, Karthik, mbautin, JIRA

  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.

TEST PLAN
  1) add one unit test for multiple region server shut down case
  2) running all the unit test
  3) will test it in dev cluster

REVISION DETAIL
  https://reviews.facebook.net/D237

AFFECTED FILES
  src/main/java/org/apache/hadoop/hbase/master/ProcessServerShutdown.java
  src/test/java/org/apache/hadoop/hbase/master/TestMultiRegionServerShutDown.java

                
> 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
>
>
> 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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