[JIRA] [master-slave] (JENKINS-6188) When a build is aborted, Hudson does not kill all the descendant processes recursively to avoid run-away processes on the Slave Build machines.

Wed, 01 May 2013 21:09:05 -0700

 
Tully Foote edited a comment on Bug JENKINS-6188

We've had the same issue using pbuilder for several years. We're running 1.513 now, but we've been seeing this issue for a long time.

Jobs end up with orphaned process trees like this: 

root     32018  0.0  0.0  53788  1524 ?        S    08:50   0:00 sudo pbuilder execute --basetgz /var/cache/pbuilder/jenkins_tools.precise.am
root     32019  0.0  0.1  12824  1812 ?        S    08:50   0:00  \_ /bin/bash /usr/sbin/pbuilder execute --basetgz /var/cache/pbuilder/jenki
root     10649  0.0  0.0   9424  1256 ?        S    08:50   0:00      \_ /bin/bash -ex /runscript doc
root     10656  0.1  1.3  75456 24148 ?        S    08:50   0:36      |   \_ python /home/rosbuild/hudson/workspace/doc-fuerte-tum/jenkins_sc
root      9009  0.0  0.0   9768  1692 ?        S    16:55   0:00      |       \_ bash -c source /opt/ros/fuerte/setup.bash && export PYTHONPA
root      9026  1.1  1.3  61092 22904 ?        S    16:55   0:00      |           \_ /usr/bin/python /usr/local/bin/rosdoc_lite /home/rosbuil
root      9027 52.0 18.6 350096 327324 ?       D    16:55   0:43      |               \_ doxygen /tmp/tmpwC1LwG
root      9365  0.0  0.0   4308   352 ?        S    16:56   0:00      \_ sleep 5s


Where the pbuilder process used to be a subprocess of the script being run by jenkins.  



However you can see that jenkins is in a separate process tree: 




root       747  0.0  0.0  49948   244 ?        Ss   Apr16   0:01 /usr/sbin/sshd -D
root     12760  0.0  0.0  92224   372 ?        Ss   Apr30   0:00  \_ sshd: rosbuild [priv]
rosbuild 12904  0.0  0.0  92408   528 ?        S    Apr30   0:50  |   \_ sshd: rosbuild@notty
rosbuild 12918  0.0  0.0  12296   228 ?        Ss   Apr30   0:00  |       \_ bash -c cd '/home/rosbuild/hudson' && java  -jar slave.jar
rosbuild 12919  0.1  4.4 1598760 77928 ?       Sl   Apr30   1:55  |           \_ java -jar slave.jar
root      9084  0.0  0.2  90164  4052 ?        Ss   16:56   0:00  \_ sshd: root@pts/3    
root      9281  0.5  0.3  24056  5300 pts/3    Ss   16:56   0:00      \_ -bash
root      9366  0.0  0.0  18128  1200 pts/3    R+   16:56   0:00          \_ ps auxf





We're running a linux master and slaves with SSH Slaves plugin 0.23
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