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[JENKINS-6137] Slave agent launcher leaks file descriptors #19476
Description
We have Hudson configured to launch builds on a number of slave machines. After running for a few days, jobs start failing with the following exception:
SEVERE: Unable to launch the slave agent for RHEL 3 JDK 5
java.io.IOException: Cannot run program "/scripts/bin/launch.sh":
java.io.IOException: error=24, Too many open files
at java.lang.ProcessBuilder.start(ProcessBuilder.java:459)
The lsof command shows hundreds of opened slave log files (~/.hudson/slave-XYZ.log).
We tracked down this issue in the source code to the methods SlaveComputer._connect() and SlaveComputer.disconnect(). See attached patch for details.
Originally reported by alban4, imported from: Slave agent launcher leaks file descriptors
- status: Closed
- priority: Major
- component(s): core
- resolution: Fixed
- resolved: 2010-03-31T14:32:17+00:00
- votes: 0
- watchers: 0
- imported: 2025-11-24
Raw content of original issue
We have Hudson configured to launch builds on a number of slave machines. After running for a few days, jobs start failing with the following exception:
SEVERE: Unable to launch the slave agent for RHEL 3 JDK 5 java.io.IOException: Cannot run program "/scripts/bin/launch.sh": java.io.IOException: error=24, Too many open files at java.lang.ProcessBuilder.start(ProcessBuilder.java:459)
The lsof command shows hundreds of opened slave log files (~/.hudson/slave-XYZ.log).
We tracked down this issue in the source code to the methods SlaveComputer._connect() and SlaveComputer.disconnect(). See attached patch for details.
- environment:
Hudson version 1.352 on RHEL 3
Activity
jenkins-infra-bot commentedon Mar 31, 2010
Raw content of original comment:
Code changed in hudson
User: : kohsuke
Path:
trunk/hudson/main/core/src/main/java/hudson/slaves/SlaveComputer.java
trunk/www/changelog.html
http://jenkins-ci.org/commit/29663
Log:
[FIXED JENKINS-6137] in 1.354. Thanks for the patch!