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https://jira.codehaus.org/browse/SUREFIRE-946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=316801#comment-316801
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Andreas Gudian commented on SUREFIRE-946:
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On my Windows PC, hitting Ctrl+C correctly kills all processes. From the stack
dumps, it looked to me as if the _forked_ process was killed off without the
main process knowing. So I executed some test classes from which one calls
{{System.exit(0)}} in its test method. Bang, I got the exact same stack dumps.
I fixed that by adding a shutdown hook in the forked process that will say
"bye" to the main process if everything went fine, and report an abnormal
termination if something else went wrong (such as a test calling
{{System.exit}}). The main process then closes the
{{TestProvidingInputStream}}, allowing the {{StreamFeeder}} thread to terminate.
Still, in case the shutdown hooks are not executed (e.g. due to
{{Runtime.halt(..)}} or some other brutal external process termination, we will
end up having the same problem. We would be back with that heartbeat thing...
Pull-request is open.
> Maven hangs on SIGTERM when using Surefire forking
> (CommandLineUtils.ProcessHook)
> ---------------------------------------------------------------------------------
>
> Key: SUREFIRE-946
> URL: https://jira.codehaus.org/browse/SUREFIRE-946
> Project: Maven Surefire
> Issue Type: Bug
> Affects Versions: 2.13
> Reporter: Jesse Glick
> Attachments: stack.txt
>
>
> Java 7u7, Surefire with JUnit {{forkMode="perthread"}} + {{threadCount="1"}}
> + {{reuseForks="true"}}. After pressing Ctrl-C to stop the Maven test run,
> the process hangs and must be killed with SIGKILL. From the thread dump,
> {{CommandLineUtils.ProcessHook}} and {{StreamFeeder}} look responsible.
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