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https://issues.apache.org/jira/browse/HADOOP-3514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12630186#action_12630186
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Hudson commented on HADOOP-3514:
--------------------------------
Integrated in Hadoop-trunk #600 (See
[http://hudson.zones.apache.org/hudson/job/Hadoop-trunk/600/])
> Reduce seeks during shuffle, by inline crcs
> -------------------------------------------
>
> Key: HADOOP-3514
> URL: https://issues.apache.org/jira/browse/HADOOP-3514
> Project: Hadoop Core
> Issue Type: Improvement
> Components: mapred
> Affects Versions: 0.18.0
> Reporter: Devaraj Das
> Assignee: Jothi Padmanabhan
> Fix For: 0.19.0
>
> Attachments: hadoop-3514-v1.patch, hadoop-3514-v10.patch,
> hadoop-3514-v11.patch, hadoop-3514-v12.patch, hadoop-3514-v13.patch,
> hadoop-3514-v2.patch, hadoop-3514-v3.patch, hadoop-3514-v4.patch,
> hadoop-3514-v5.patch, hadoop-3514-v6.patch, hadoop-3514-v7.patch,
> hadoop-3514-v8.patch, hadoop-3514-v9.patch, hadoop-3514.patch
>
>
> The number of seeks can be reduced by half in the iFile if we move the crc
> into the iFile rather than having a separate file.
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