[jira] [Resolved] (LUCENE-3452) The native FS lock used in test-framework's o.a.l.util.LuceneJUnitResultFormatter prohibits testing on a multi-user system

["Robert Muir (Resolved) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-3452?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Muir resolved LUCENE-3452.
---------------------------------

    Resolution: Fixed

Fortunately i only screwed this up on trunk... its been fine in 3.x all along.
                
> The native FS lock used in test-framework's o.a.l.util.LuceneJUnitResultFormatter prohibits testing on a multi-user system
> --------------------------------------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-3452
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3452
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: general/test
>    Affects Versions: 3.4, 4.0
>            Reporter: Steven Rowe
>            Assignee: Robert Muir
>            Priority: Minor
>             Fix For: 4.0, 3.5
>
>         Attachments: LUCENE-3452.patch
>
>
> {{LuceneJUnitResultFormatter}} uses a lock to buffer test suites' output, so that when run in parallel, they don't interrupt each other when they are displayed on the console.
> The current implementation uses a fixed directory ({{lucene_junit_lock/}} in {{java.io.tmpdir}} (by default {{/tmp/}} on Unix/Linux systems) as the location of this lock.  This functionality was introduced on SOLR-1835.
> As Shawn Heisey reported on SOLR-2739, some tests fail when run as root, but succeed when run as a non-root user.  
> On #lucene IRC today, Shawn wrote:
> {quote}
> (2:06:07 PM) elyograg: Now that I know I can't run the tests as root, I have discovered /tmp/lucene_junit_lock.  Once you run the tests as user A, you cannot run them again as user B until that directory is deleted, and only root or the original user can do so.
> {quote}

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