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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1300) deletion of excess replicas does not take into account 'rack-locality'
Date Mon, 11 Jun 2007 22:38:26 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12503661
] 

Hadoop QA commented on HADOOP-1300:
-----------------------------------

+0, new Findbugs warnings

http://issues.apache.org/jira/secure/attachment/12358913/excessDel.patch
applied and successfully tested against trunk revision r546297,
but there appear to be new Findbugs warnings introduced by this patch.

New Findbugs warnings: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/267/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Test results:   http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/267/testReport/
Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/267/console

> deletion of excess replicas does not take into account 'rack-locality'
> ----------------------------------------------------------------------
>
>                 Key: HADOOP-1300
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1300
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.13.0
>            Reporter: Koji Noguchi
>            Assignee: Hairong Kuang
>             Fix For: 0.14.0
>
>         Attachments: excessDel.patch
>
>
> One rack went down today, resulting in one missing block/file.
> Looking at the log, this block was originally over-replicated. 
> 3 replicas on one rack and 1 replica on another.
> Namenode decided to delete the latter, leaving 3 replicas on the same rack.
> It'll be nice if the deletion is also rack-aware.

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