[jira] Reopened: (LUCENE-2419) Improve parallel tests

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

     [ https://issues.apache.org/jira/browse/LUCENE-2419?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Muir reopened LUCENE-2419:
---------------------------------


> 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
>             Fix For: 3.1, 4.0
>
>         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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