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From "Isabel Drost (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAHOUT-1200) Mahout tests depend on writing to /tmp/hadoop-$user
Date Wed, 01 May 2013 06:50:17 GMT

    [ https://issues.apache.org/jira/browse/MAHOUT-1200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13646422#comment-13646422
] 

Isabel Drost commented on MAHOUT-1200:
--------------------------------------

I'm happy with any naming schema, for add long add we keep the random number in there add
otherwise we run into issues when more than one suite is running (potentially on a continuous
integration server) or when many users run the test sit (e.g. remember the trouble we had
on people.Apache.org
                
> Mahout tests depend on writing to /tmp/hadoop-$user
> ---------------------------------------------------
>
>                 Key: MAHOUT-1200
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1200
>             Project: Mahout
>          Issue Type: Bug
>          Components: build
>    Affects Versions: 0.7
>            Reporter: Isabel Drost
>         Attachments: MAHOUT-1200.patch
>
>
> Running the Mahout test suite creates the temp directory /tmp/hadoop-$user which is used
by all Hadoop related tests that pull up a local cluster. The directory is not removed after
running the tests. In particular when running multiple tests in parallel on the same machine
as the same user this can lead to problems.
> To re-produce issue the following commands prior to running the full test suite:
> mkdir /tmp/hadoop-$USER
> chmod 000 /tmp/hadoop-$USER
> mvn test

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