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https://issues.apache.org/jira/browse/BIGTOP-259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13151610#comment-13151610
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Bruno Mahé commented on BIGTOP-259:
-----------------------------------
+1
> Most of the mahout tests can't be executed out-of-the box
> ---------------------------------------------------------
>
> Key: BIGTOP-259
> URL: https://issues.apache.org/jira/browse/BIGTOP-259
> Project: Bigtop
> Issue Type: Bug
> Components: General
> Affects Versions: 0.2.0
> Reporter: Roman Shaposhnik
> Assignee: Roman Shaposhnik
> Fix For: 0.3.0
>
> Attachments: BIGTOP-259.patch.txt
>
>
> Here's what the problem looks like:
> Error: java.lang.ClassNotFoundException: org.apache.mahout.math.Vector
> First the good news: it is fixed upstream: MAHOUT-680. The root cause of the
> problem is the fact that /usr/lib/mahout/bin/mahout constructs
> HADOOP_CLASSPATH in such a way that it puts mahout-examples-0.5-job.jar
> *after* mahout-core-0.5-job.jar. That trips up job submission code into
> putting mahout-core-0.5-job.jar into distributed cache instead of
> mahout-examples-0.5-job.jar (which has the missing class definitions).
> A proposed workaround to sustain us for as long as MAHOUT-680 hasn't been put
> into any release yet is to manually initialize HADOOP_CLASSPATH with
> mahout-examples-0.5-job.jar at the level of /usr/bin/mahout. This is ugly but
> it works.
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