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https://issues.apache.org/jira/browse/MAHOUT-1636?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14261461#comment-14261461
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ASF GitHub Bot commented on MAHOUT-1636:
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Github user pferrel commented on the pull request:
https://github.com/apache/mahout/pull/69#issuecomment-68395014
Hmm, not using shade and not doing any of the more funky things it
supports. I guess you are talking about creating a trimmed down all-deps jar
(using the assembly maven plugin)?
Are you asking to exclude Mahout too? That would make the jar nothing more
than lib-managed, right? It would be quite easy to do. The jar would still need
to be a release artifact. And we would still have a huge list of jars to search
in "mahout classpath -spark".
I'm **not** a build engineer so if someone has a better way of doing this
please speak up.
> Class dependencies for the spark module are put in a job.jar, which is very
> inefficient
> ---------------------------------------------------------------------------------------
>
> Key: MAHOUT-1636
> URL: https://issues.apache.org/jira/browse/MAHOUT-1636
> Project: Mahout
> Issue Type: Bug
> Components: spark
> Affects Versions: 1.0-snapshot
> Reporter: Pat Ferrel
> Assignee: Ted Dunning
> Fix For: 1.0-snapshot
>
>
> using a maven plugin and an assembly job.xml a job.jar is created with all
> dependencies including transitive ones. This job.jar is in
> mahout/spark/target and is included in the classpath when a Spark job is run.
> This allows dependency classes to be found at runtime but the job.jar include
> a great deal of things not needed that are duplicates of classes found in the
> main mrlegacy job.jar. If the job.jar is removed, drivers will not find
> needed classes. A better way needs to be implemented for including class
> dependencies.
> I'm not sure what that better way is so am leaving the assembly alone for
> now. Whoever picks up this Jira will have to remove it after deciding on a
> better method.
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