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https://issues.apache.org/jira/browse/MAPREDUCE-5696?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13856997#comment-13856997
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Hitesh Shah commented on MAPREDUCE-5696:
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The introduction of localization counters in the env is akin to introducing a
new API in YARN. Could you split this jira out into 2. One in YARN for the YARN
changes where the new API/interface is introduced and this jira could be
leveraged for the MR specific changes.
> Add Localization counters to MR
> -------------------------------
>
> Key: MAPREDUCE-5696
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5696
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv2
> Reporter: Gera Shegalov
> Assignee: Gera Shegalov
> Attachments: LocalizationCounters.png, MAPREDUCE-5696.v01.patch
>
>
> Users are often unaware of localization cost that their jobs incur. To
> measure effectiveness of localization caches it is necessary to expose the
> overhead in the form of user-visible metrics. The purpose of this JIRA is to
> compliment YARN-1529. While YARN-1529 attempts to provide a cluster-wide view
> to cluster admins, this JIRA focuses on exposing the localization overhead on
> per-job basis to the job owner/user.
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