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https://issues.apache.org/jira/browse/SUREFIRE-1430?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16426487#comment-16426487
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Tibor Digana commented on SUREFIRE-1430:
----------------------------------------
[~christian.beikov]
After investigating this issue I found out that it is not related to Linux. It
was reproduced on Linux only because the number of virtual CPU is 1. So I
turned the configuration from
{code:xml}
<threadCount>1</threadCount>
<perCoreThreadCount>true</perCoreThreadCount>
{code}
to
{code:xml}
<threadCount>3</threadCount>
<perCoreThreadCount>false</perCoreThreadCount>
{code}
which caused hanging the plugin finally on both Linux and Windows.
If you set {{threadCount}} to 4 all tests pass on both platforms.
It means that we have a bug in parallel computer or dissipation of threads to
suites/classes/methods.
I will develop a unit test and isolate the problem only to
ParallelComputerBuilder.
> Parallel parameterized JUnit test hangs on Linux
> ------------------------------------------------
>
> Key: SUREFIRE-1430
> URL: https://issues.apache.org/jira/browse/SUREFIRE-1430
> Project: Maven Surefire
> Issue Type: Bug
> Components: Junit 4.7+ (parallel) support
> Affects Versions: 2.18, 2.18.1, 2.19, 2.19.1, 2.20, 2.20.1
> Environment: Linux/Ubuntu
> Reporter: Christian Beikov
> Assignee: Tibor Digana
> Priority: Major
> Fix For: 3.0.0-M1
>
>
> This is a follow up of SUREFIRE-1264. The test case is here:
> https://github.com/beikov/surefire-test
> The problem is, that a simple parameterized JUnit test hangs when running in
> parallel mode on Linux.
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