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https://issues.apache.org/jira/browse/MAPREDUCE-1478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12832246#action_12832246
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Todd Lipcon commented on MAPREDUCE-1478:
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I assume this would be somewhat optional, right? That is, if the user doesn't
put a mapreduce-lib.jar in their job.jar/lib/, it will use the system one on
the TT's classpath? We'll just allow users to use a local one when they like?
> Separate the mapred.lib and mapreduce.lib classes to a different jar and
> include the user jar ahead of the lib jar.
> -------------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-1478
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1478
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: task
> Reporter: Owen O'Malley
>
> Currently the user can't include updated library jars as part of their job.
> By pulling out the lib classes we can include the classes (eg.
> TextInputFormat) in the user's jar and get their version and not the system
> installed one.
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