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From "Amar Kamat (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-2777) Backport MAPREDUCE-220 to Hadoop 20 security branch
Date Mon, 05 Sep 2011 06:17:09 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2777?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Amar Kamat updated MAPREDUCE-2777:

    Attachment: mapreduce-2777-v1.3.patch

Attaching a patch that backports the MAPREDUCE-220 and MAPREDUCE-2469 features to the hadoop-0.20-security
branch. MAPREDUCE-220 and MAPREDUCE-2469 have dependencies which also got selectively backported.
Here is the list of JIRA's that got backported:
MR-220, MR-1201, MR-1762, MR-1218 & MR-2469. I have resolved most of the hunks w.r.t parameter
naming, missing APIs and missing backports (e.g GC_TIME_MILLIS counters etc). 

We have tested this patch at scale and also benchmarked this patch for regressions. It seems
that the overhead is negligible and the newly added counters are correctly captured and recorded.

> Backport MAPREDUCE-220 to Hadoop 20 security branch
> ---------------------------------------------------
>                 Key: MAPREDUCE-2777
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2777
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>    Affects Versions:
>            Reporter: Jonathan Eagles
>            Assignee: Amar Kamat
>         Attachments: mapreduce-2777-v1.3.patch

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