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https://issues.apache.org/jira/browse/MAHOUT-368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12880837#action_12880837
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Hui Wen Han commented on MAHOUT-368:
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packaging core ,math and collections to one Jar package for
org.apache.mahout.cf.taste.hadoop.item.RecommenderJob is very imperative in
real environment.
In a real project,if we used
org.apache.mahout.cf.taste.hadoop.item.RecommenderJob and want to package the
whole project to one single jar,
we have to package core ,math and collections to one Jar package manually,
because mahout update quickly ,so it is very annoying so this.
if Mahout project can provide this ,we can depend it in the Maven POM file and
package the whole project and it's dependent jar easily.
> should package core ,math and collections to one Jar package for hadoop
> recommendations
> ---------------------------------------------------------------------------------------
>
> Key: MAHOUT-368
> URL: https://issues.apache.org/jira/browse/MAHOUT-368
> Project: Mahout
> Issue Type: Improvement
> Components: Collaborative Filtering
> Affects Versions: 0.4
> Reporter: Hui Wen Han
> Assignee: Sean Owen
> Fix For: 0.4
>
>
> should package core ,math and collections to one Jar package for
> org.apache.mahout.cf.taste.hadoop.item.RecommenderJob.
> because RecommenderJob used classes (for example
> org.apache.mahout.math.VectorWritable )of the math module of mahout project,
> but math and core module is the separated jar package.
> so when work on the hadoop env ,the class of math module can not load to
> classloader in the datanode.
> it will cause class not found exception.
> the work around is package all mahout classes to one package manually.
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