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Date: Wed, 31 Mar 2010 21:12:27 +0000 (UTC)
From: "Robert Muir (JIRA)" <jira@apache.org>
To: java-dev@lucene.apache.org
Subject: [jira] Reopened: (LUCENE-1709) Parallelize Tests
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     [ https://issues.apache.org/jira/browse/LUCENE-1709?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Muir reopened LUCENE-1709:
---------------------------------


I would like to reopen this issue to address some minor things.
* junit should not create temp files in the src directory, like junitvmwatcher* etc.
* we should somehow include ant.jar and ant-junit.jar in such a way its easy for
IDE's to be configured, yet at the same time, ant doesn't give a warning. This
was already a pre-existing condition for contrib/ant!
* we should tone down the default threads-per-cpu to 1 by default, and allow
it to be configurable via sysprop.

i think these apply to solr too, so i'm proposing fixing both the build.xml's

> Parallelize Tests
> -----------------
>
>                 Key: LUCENE-1709
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1709
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Index
>    Affects Versions: 2.4.1
>            Reporter: Jason Rutherglen
>            Assignee: Robert Muir
>             Fix For: 3.1
>
>         Attachments: LUCENE-1709.patch, LUCENE-1709.patch, LUCENE-1709.patch, LUCENE-1709.patch, LUCENE-1709.patch, LUCENE-1709.patch, runLuceneTests.py
>
>   Original Estimate: 48h
>  Remaining Estimate: 48h
>
> The Lucene tests can be parallelized to make for a faster testing system.  
> This task from ANT can be used: http://ant.apache.org/manual/CoreTasks/parallel.html
> Previous discussion: http://www.gossamer-threads.com/lists/lucene/java-dev/69669
> Notes from Mike M.:
> {quote}
> I'd love to see a clean solution here (the tests are embarrassingly
> parallelizable, and we all have machines with good concurrency these
> days)... I have a rather hacked up solution now, that uses
> "-Dtestpackage=XXX" to split the tests up.
> Ideally I would be able to say "use N threads" and it'd do the right
> thing... like the -j flag to make.
> {quote}

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