Improve parallel tests
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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
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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