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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-3514) Reduce seeks during shuffle, by inline crcs
Date Mon, 11 Aug 2008 18:28:44 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-3514?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arun C Murthy updated HADOOP-3514:
----------------------------------

    Status: Open  (was: Patch Available)

Cancelling patch while we fix this patch to use RawLocalFileSystem...

> 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-v3.patch,
hadoop-3514-v4.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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