Thomas Raehalme commented on SUREFIRE-1422:

The problem is that even though the tests run just fine, the forked process is 
killed (by Maven) and the build therefore fails.

In your previous comment you state that "if the command fails then the default 
mechanism should take over and forked JVM would be killed till 30 seconds". 
Because Alpine by default does not support the -p flag, this always happens, 
and is a problem if the tests run longer than 30 seconds, right?

> Forking fails on Linux if /bin/ps isn't available
> -------------------------------------------------
>                 Key: SUREFIRE-1422
>                 URL: https://issues.apache.org/jira/browse/SUREFIRE-1422
>             Project: Maven Surefire
>          Issue Type: Bug
>          Components: process forking
>    Affects Versions: 2.20.1
>         Environment: Linux (Debian 9 with OpenJDK 8)
>            Reporter: Emmanuel Bourg
>            Assignee: Tibor Digana
>            Priority: Major
>             Fix For: 2.21.0
> Hi,
> With the changes introduced by SUREFIRE-1302 I'm now experiencing a failure 
> on Linux when the fork mode is enabled:
> {code}
> [ERROR] Failed to execute goal 
> org.apache.maven.plugins:maven-surefire-plugin:2.20.1:test (default-test) on 
> project foo: There are test failures.
> [ERROR] Please refer to /foo/target/surefire-reports for the individual test 
> results.
> [ERROR] Please refer to dump files (if any exist) [date]-jvmRun[N].dump, 
> [date].dumpstream and [date]-jvmRun[N].dumpstream.
> [ERROR] The forked VM terminated without properly saying goodbye. VM crash or 
> System.exit called?
> {code}
> I traced the issue back to the PpidChecker class, the code assumes that 
> {{/bin/ps}} or {{/usr/bin/ps}} exist but this isn't guaranteed (especially on 
> trimmed down containers commonly used for continuous integration).
> It would be nice to have a fallback mechanism when ps isn't available, or at 
> least check its existence and display an explicit message stating that it 
> must be installed.

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