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From Marc Millstone <millst...@gmail.com>
Subject Re: Failing unit test: testStartParallelFPGrowth
Date Mon, 11 Jul 2011 19:58:54 GMT
Great.  I will do this later this afternoon.


On Mon, Jul 11, 2011 at 12:55 PM, Sean Owen <srowen@gmail.com> wrote:

> You're welcome, and welcome to add to the wiki as you see fit:
> https://cwiki.apache.org/MAHOUT/mahout-wiki.html
> Maybe one of the Installation/Setup pages is a good home for a note?
>
> On Mon, Jul 11, 2011 at 8:53 PM, Marc Millstone <millstone@gmail.com>
> wrote:
>
> > Awesome.  I agree entirely with your assessment.
> >
> > Thank you for your help, I do appreciate the time it takes to help
> > strangers over the internet.  And it is what makes this community
> > great.
> >
> > Is there a place on the wiki for little facts like this?  I am more
> > than happy to add something to help others that may encounter
> > this issue.  (I can't be the only person using the IBM JVM with
> > Mahout).
> >
> >
> >
> >
> > On Mon, Jul 11, 2011 at 12:47 PM, Sean Owen <srowen@gmail.com> wrote:
> >
> > > It sounds like the actual test failure does not occur in HEAD, so
> sounds
> > > like whatever it is is already fixed or rendered moot.
> > >
> > > The issue about Hadoop 0.20.203.0 is a Hadoop issue at best, and looks
> > like
> > > they're already tracking it. I think it should be fixed of course, but
> > it's
> > > not a Mahout thing.
> > >
> > > I am not seeing a Mahout issue here then.
> > >
> > > On Mon, Jul 11, 2011 at 8:43 PM, Marc Millstone <millstone@gmail.com>
> > > wrote:
> > >
> > > > Good News:  The offending unit tests passes with the combination of
> > > >
> > > > IBM JVM + Mahout Trunk + Hadoop 0.20.2
> > > >
> > > >
> > > > To recap:
> > > >
> > > > IBM JVM + Mahout .5 + Hadoop 0.20.2 fails with the error
> > > >
> > > >
> > testStartParallelFPGrowth(org.apache.mahout.fpm.pfpgrowth.PFPGrowthTest):
> > > > expected:<{[D=0, E=1, A=0, B=0, C]=1}> but was:<{[A=0, B=0, C=1,
D=0,
> > > > E]=1}>
> > > >
> > > > IBM JVM + Mahout trunk + Hadoop  0.20.203.0  fails with user
> > > initialization
> > > > problems due to IBM JVM and the sun
> com.sun.security.auth.UnixPrincipal
> > > > class.
> > > >  Is this dependency going to be updated in the future?  It does seem
> to
> > > > limit the use of non-Sun JVM's.
> > > >
> > > > Are there any tickets that should be filed?
> > > >
> > > >
> > > >
> > > > On Mon, Jul 11, 2011 at 12:22 PM, Marc Millstone <
> millstone@gmail.com
> > > > >wrote:
> > > >
> > > > > Ok.  Let me play with this some more.  I appreciate your help.
> > > > >
> > > > > In .5, under the IBM JVM we still get the Unit test failure in
> > > PFPGrowth
> > > > > though.  It seems
> > > > > to be a true failure too, not an initialization issue.
> > > > >
> > > > > I am now going to install the Sun JVM locally on my cluster and
> link
> > > > > against
> > > > > that to see if things pass for Mahout .5.
> > > > >
> > > > > Feel free to contact me off list if this is getting to be too
> detail
> > > > > oriented, etc for this list.
> > > > >
> > > > > On Mon, Jul 11, 2011 at 12:18 PM, Sean Owen <srowen@gmail.com>
> > wrote:
> > > > >
> > > > >> I strongly suspect it is because we updated to Hadoop 0.20.203.0.
> > 0.5
> > > > >> depended on 0.20.2. You could locally go back to depending on
> > 0.20.2;
> > > it
> > > > >> ought to still work fine with the previous version.
> > > > >>
> > > > >> On Mon, Jul 11, 2011 at 8:14 PM, Marc Millstone <
> > millstone@gmail.com>
> > > > >> wrote:
> > > > >>
> > > > >> > Ok.  I am starting to think this could be a IBM JVM thing
> > > > >> > after finding this JIRA:
> > > > >> https://issues.apache.org/jira/browse/HADOOP-7211
> > > > >> >
> > > > >> >
> > > > >> > Could it be that something changed between trunk and .5
that
> > caused
> > > > this
> > > > >> > issue to manifest itself in different ways?
> > > > >> > In .5, we just got the wrong answer and in trunk, we are
getting
> > > this
> > > > >> > permission issue?
> > > > >> >
> > > > >> > marc
> > > > >> >
> > > > >> >
> > > > >> >
> > > > >>
> > > > >
> > > > >
> > > >
> > >
> >
>

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