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https://issues.apache.org/jira/browse/PIG-2318?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13132876#comment-13132876
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Julien Le Dem commented on PIG-2318:
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Alan, does the "testudf.jar" get build for the regular unit-test run? If yes I
have a unit test that reproduces this.
> Push extra jars to distributed cache and use the classloader enxtension
> mechanism in PigContext to load them on the backend
> ---------------------------------------------------------------------------------------------------------------------------
>
> Key: PIG-2318
> URL: https://issues.apache.org/jira/browse/PIG-2318
> Project: Pig
> Issue Type: Improvement
> Components: impl
> Reporter: Julien Le Dem
> Assignee: Julien Le Dem
> Attachments: PIG-2318.patch, PIG-2318_2.patch, PIG-2318_3.patch
>
>
> This is related to PIG-2010 with a slightly different approach
> https://issues.apache.org/jira/browse/PIG-2010
> Currently Pig bundles up all dependencies in a single jar which is a lot of
> overhead when there are a lot of dependencies and short lived jobs. This
> patch instead pushes the dependencies to distributed cache and uses the
> PigContext classloading mechanism to make the UDFs available.
> Possible improvements: push jars to HDFS/distributed cache only once per
> script. have a cache on HDFS to avoid repeatedly pushing jars to HDFS.
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