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From "Tibor Digana (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SUREFIRE-1264) Some tests can be lost when running in parallel with parameterized tests
Date Fri, 22 Sep 2017 16:40:01 GMT

    [ https://issues.apache.org/jira/browse/SUREFIRE-1264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16176688#comment-16176688
] 

Tibor Digana commented on SUREFIRE-1264:
----------------------------------------

I do not have docker but I will check it our on Fedora and Ubuntu.
Did you have the same problem on ordinal Linux not running under Docker?
Does it have to do something with MMU in CPU due to Linux Virtualization of
Kernel?

On Fri, Sep 22, 2017 at 10:18 AM, Christian Beikov (JIRA) <jira@apache.org>



> Some tests can be lost when running in parallel with parameterized tests
> ------------------------------------------------------------------------
>
>                 Key: SUREFIRE-1264
>                 URL: https://issues.apache.org/jira/browse/SUREFIRE-1264
>             Project: Maven Surefire
>          Issue Type: Bug
>          Components: Junit 4.7+ (parallel) support
>    Affects Versions: 2.19.1
>         Environment: Maven 3.3.9
> Java 1.8.0_45 (Oracle)
> System: OS X
> Reproduced on Linux too, with both OpenJDK 7 and Java 7 from Oracle.
>            Reporter: Jean-Luc Derrien
>            Assignee: Tibor Digana
>             Fix For: 2.20.1
>
>         Attachments: failure-2.21-snapshot-SUREFIRE-1264.zip, pom.xml
>
>          Time Spent: 144h
>  Remaining Estimate: 24h
>
> Hello,
> It appears some tests can be lost when using the parallel mode with parameterized tests.
Here is a [small project|https://github.com/jderrien/surefire-junit-tests/tree/simple-1] I've
used to try to reproduce the issue we have seen.
> This is not something that happens on every run, but it's quite frequent.
> With this loop, the problem should appear in less than 2 minutes, maybe on the first
run when (un)lucky:
> {code}
> time while true; do mvn clean test > last.log ; tail -25 last.log ; if [ "$(grep -c
'Tests run: 12' last.log)" == "0" ]; then break; fi ; done
> {code}
> Normal run:
> {noformat}
> -------------------------------------------------------
>  T E S T S
> -------------------------------------------------------
> Running [p2]
> com.appnexus.viewability.core.surefireJunitTests.ATest.methodA1[p2] - p2 - sleeptime
= 1 => start
> com.appnexus.viewability.core.surefireJunitTests.ATest.methodA1[p2] - p2 - sleeptime
= 1 => stop
> com.appnexus.viewability.core.surefireJunitTests.ATest.methodA1[p1] - p1 - sleeptime
= 2 => start
> com.appnexus.viewability.core.surefireJunitTests.ATest.methodA1[p1] - p1 - sleeptime
= 2 => stop
> com.appnexus.viewability.core.surefireJunitTests.ATest.methodA1[p0] - p0 - sleeptime
= 5 => start
> com.appnexus.viewability.core.surefireJunitTests.ATest.methodA1[p0] - p0 - sleeptime
= 5 => stop
> Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 5.006 sec - in [p2]
> Running [p2]
> Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.011 sec - in [p2]
> Results :
> Tests run: 12, Failures: 0, Errors: 0, Skipped: 0
> {noformat}
> When tests have been lost (here one test lost according to the output):
> {noformat}
> -------------------------------------------------------
>  T E S T S
> -------------------------------------------------------
> Running [p2]
> com.appnexus.viewability.core.surefireJunitTests.ATest.methodA1[p0] - p0 - sleeptime
= 5 => start
> com.appnexus.viewability.core.surefireJunitTests.ATest.methodA1[p2] - p2 - sleeptime
= 1 => start
> com.appnexus.viewability.core.surefireJunitTests.ATest.methodA1[p1] - p1 - sleeptime
= 2 => start
> Tests run: 5, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.007 sec - in [p2]
> Running [p2]
> Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.012 sec - in [p2]
> Results :
> Tests run: 11, Failures: 0, Errors: 0, Skipped: 0
> {noformat}
> Note: there are 3 test classes and 18 tests on the [master branch|https://github.com/jderrien/surefire-junit-tests/tree/master]
and it's even more frequent/easy to reproduce.



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