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References: <4BDA0A05.3000102@windwardsolutions.com>
	 <u2tc7d45fc71004291538m3cda76bez8d77f9097767e31a@mail.gmail.com>
Date: Thu, 29 Apr 2010 23:49:12 +0100
Message-ID: <w2te2e029611004291549g3bdbcb8cj4945d8c6286ad5ef@mail.gmail.com>
Subject: Re: Intermittant Test Failure:
 testTranspose(org.apache.mahout.math.hadoop.TestDistributedRowMatrix)
From: Sean Owen <srowen@gmail.com>
To: mahout-dev@lucene.apache.org
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

I had taken on MAHOUT-302 which is basically about overhauling how
temp data is handled for tests. I think we can indeed handle it more
cleanly and in a way such that collisions never happen. I'm still in
the middle of it.

On Thu, Apr 29, 2010 at 11:38 PM, Ted Dunning <ted.dunning@gmail.com> wrote=
:
> Any chance to use a new name?
>
> On Thu, Apr 29, 2010 at 3:36 PM, Jeff Eastman <jdog@windwardsolutions.com=
>wrote:
>
>> The surfire report seems to indicate this might be a timing problem with
>> hdfs being lazy. Sometimes it passes and sometimes it fails, but of cour=
se,
>> right at the end of the 15 min core tests which makes it especially
>> annoying. Any resolution possible?
>>
>>
>> ------------------------------------------------------------------------=
-------
>> Test set: org.apache.mahout.math.hadoop.TestDistributedRowMatrix
>>
>> ------------------------------------------------------------------------=
-------
>> Tests run: 4, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 5.828 se=
c
>> <<< FAILURE!
>> testTranspose(org.apache.mahout.math.hadoop.TestDistributedRowMatrix) =
=C2=A0Time
>> elapsed: 1.507 sec <<< ERROR!
>> java.lang.RuntimeException:
>> org.apache.hadoop.mapred.FileAlreadyExistsException: Output directory
>> file:/Users/jeff/Documents/workspace/MahoutTrunk/core/testdata/transpose=
-72
>> already exists
>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at
>> org.apache.mahout.math.hadoop.DistributedRowMatrix.transpose(Distributed=
RowMatrix.java:163)
>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at
>> org.apache.mahout.math.hadoop.TestDistributedRowMatrix.testTranspose(Tes=
tDistributedRowMatrix.java:93)
>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at sun.reflect.NativeMethodAccessorImpl.invok=
e0(Native Method)
>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav=
a:39)
>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor=
Impl.java:25)
>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at java.lang.reflect.Method.invoke(Method.jav=
a:597)
>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at junit.framework.TestCase.runTest(TestCase.=
java:168)
>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at junit.framework.TestCase.runBare(TestCase.=
java:134)
>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at junit.framework.TestResult$1.protect(TestR=
esult.java:110)
>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at junit.framework.TestResult.runProtected(Te=
stResult.java:128)
>>
>>
>