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https://issues.apache.org/jira/browse/HADOOP-3514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12619784#action_12619784
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Jothi Padmanabhan commented on HADOOP-3514:
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Agreed, I will move these classes to MR. We could move this to io if we later
identify that there is a requirement for these classes outside of IFile.
> 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-v2.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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