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https://jira.codehaus.org/browse/SUREFIRE-773?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=327089#comment-327089
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Dan Lipofsky commented on SUREFIRE-773:
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I also see this on Mac OS X 10.7.5, Java 1.7.0_21-b12, and
maven-surefire-plugin 2.14. I am running mvn using "mvn -B
-Dsurefire.timeout=300 clean test >| mvn.log 2>&1" and when my tests do hang
they hang trying to do a java.net.PlainSocketImpl.socketAccept().
> 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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