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https://jira.codehaus.org/browse/SUREFIRE-773?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=287102#comment-287102
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Kristian Rosenvold commented on SUREFIRE-773:
---------------------------------------------
Using JNA, the Selenium project now has a java based mechanism that kills a
process tree on Windows. The class is called "WindowsProcessGroup" in the
selenium source tree. I'm still not entirely sure if we should dive down this
rabbit hole, we should at least upgrade to commons-exec first.
> surefire forked processes not always killed after timeout
> ---------------------------------------------------------
>
> Key: SUREFIRE-773
> URL: https://jira.codehaus.org/browse/SUREFIRE-773
> Project: Maven Surefire
> Issue Type: Bug
> Components: process forking
> Affects Versions: 2.8
> Environment: 64 bit RHEL 5.5 , 64-bit Java 1.6.0_23
> Reporter: David Biesack
>
> Our forked JUnit/surefire processes are not always stopping correctly when
> timing out within a Maven build
> (running inside our Jenkins CI server, ver 1.425).
> The maven build finishes and Jenkins shows a failed/unstable build.
> These running processes cause problems later, because the tests may be
> holding a resource like a port, and subsequent rebuilds fail because the
> tests fail.
> For example, even though no Maven builds are currently running, ps shows
> about a dozen Java processes running,
> with commands such as:
> {noformat}
> /usr/local/java-1.6_23/jre/bin/java -Xms1g -Xmx5g
> -Djava.library.path=/u/jenkinsci/.hudson/jobs/rtolap.jtt.tests/workspace/target/lib
> \
> -jar
> /u/jenkinsci/.hudson/jobs/rtolap.jtt.tests/workspace/target/surefire/surefirebooter1374560535780866887.jar
> \
>
> /u/jenkinsci/.hudson/jobs/rtolap.jtt.tests/workspace/target/surefire/surefire65313...
> /usr/local/java-1.6_23/jre/bin/java -Xmx2g -Xms1g
> -Djava.library.path=/u/jenkinsci/.hudson/jobs/rtolap/workspace/target/lib \
> -jar
> /u/jenkinsci/.hudson/jobs/rtolap/workspace/target/surefire/surefirebooter6814971258434039335.jar
> \
>
> /u/jenkinsci/.hudson/jobs/rtolap/workspace/target/surefire/surefire5806103969370259371tmp
> /u/jenkinsci/...
> ...
> {noformat}
> We have our Maven surefire preferences set to fork the tests (via a parent
> pom)
> {code:xml|title=pom.xml excerpt}
> <plugin>
> <groupId>org.apache.maven.plugins</groupId>
> <artifactId>maven-surefire-plugin</artifactId>
> <version>2.8</version>
> <configuration>
> <forkMode>once</forkMode>
>
> <forkedProcessTimeoutInSeconds>720</forkedProcessTimeoutInSeconds>
> </configuration>
> </plugin>
> {code}
> I suspect the timeout is the problem - i.e. perhaps the test is timing out
> and the attempt to kill the forked process
> fails, leaving it running.
> Has anyone seen something similar and/or know how to fix this so that
> surefire *really* kills the process?
> When this happens, doing
> kill <processid>
> (logged in as the process owner) usually does not work, but
> kill -9 <processid>
> does.
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