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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1421) When a region server dies, its log must be distributed to all the new servers that have been assigned its regions
Date Tue, 12 Jun 2007 16:46:28 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12503921
] 

Hadoop QA commented on HADOOP-1421:
-----------------------------------

Integrated in Hadoop-Nightly #119 (See [http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Nightly/119/])

> When a region server dies, its log must be distributed to all the new servers that have
been assigned its regions
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-1421
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1421
>             Project: Hadoop
>          Issue Type: New Feature
>          Components: contrib/hbase
>    Affects Versions: 0.14.0
>            Reporter: Jim Kellerman
>            Assignee: Jim Kellerman
>             Fix For: 0.14.0
>
>         Attachments: patch.txt
>
>
> When a region server dies, the master reallocates all the regions it was serving to other
region servers. In order for the regions to be recovered properly, the log from the old region
server must be split up into chunks that contain only the commits for a single region.
> Ideally, if a region server is assigned more than one of the old servers regions, the
log for that server would contain all the commits for all the regions it has been assigned.

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