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https://issues.apache.org/jira/browse/LUCENE-2419?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir updated LUCENE-2419:
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Attachment: LUCENE-2419.patch
attached is a patch, all tests pass.
Additionally i fixed the problem that backwards tests did not respect the
threadsPerProcessor variable.
> Improve parallel tests
> ----------------------
>
> Key: LUCENE-2419
> URL: https://issues.apache.org/jira/browse/LUCENE-2419
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Build
> Affects Versions: 3.1
> Reporter: Robert Muir
> Assignee: Robert Muir
> Attachments: LUCENE-2419.patch
>
>
> As mentioned on the dev@ mailing list here:
> http://www.lucidimagination.com/search/document/93432a677917b9bd/lucenejunitresultformatter_sometimes_fails_to_lock
> It would be useful to not create a lockfactory for each test suite (As they
> are run sequentially in the same separate JVM).
> Additionally, we create a lot of JVMs (26) for each batch, because we have to
> run one for each letter.
> Instead, we use a technique here to divide up the tests with a custom
> selector: http://blog.code-cop.org/2009/09/parallel-junit.html
> (I emailed the blog author and received permission to use this code)
> This gives a nice boost to the speed of overall tests, especially Solr tests,
> as many start with an "S", but this is no longer a problem.
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