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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1184) Decommission fails if a block that needs replication has only one replica
Date Thu, 03 May 2007 21:21:15 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12493528
] 

Hadoop QA commented on HADOOP-1184:
-----------------------------------

+1

http://issues.apache.org/jira/secure/attachment/12356583/decommissionOneReplica6.patch applied
and successfully tested against trunk revision r534975.

Test results:   http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/113/testReport/
Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/113/console

> Decommission fails if a block that needs replication has only one replica
> -------------------------------------------------------------------------
>
>                 Key: HADOOP-1184
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1184
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>            Reporter: dhruba borthakur
>         Attachments: decommissionOneReplica3.patch, decommissionOneReplica4.patch, decommissionOneReplica5.patch,
decommissionOneReplica6.patch
>
>
> If the only replica of a block resides on a node being decommissioned, then the decommission
command does not complete. The blocks do not get added to neededReplication because neededReplications.update()
believes that the number of current replicas is zero.

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