Hi,
We have recently moved to Jenkins (1.508) from Hudson and the service seems
to be less stable. It happens that once in two weeks, Jenkins hangs. I can
telnet to the Jenkins port, but it seems to just eat all input (black hole).
There is nothing in the log file (initially), two processed were showing
100% CPU. I tried jstack on them, and caused a java core dump on the second
one of them - until then, one of our Jenkins tasks (which ran solr inside
jenkins) was responding. Then it died.
So I restarted Jenkins, and jenkins log showed too many opened files.
INFO: Attempting to reconnect adsate-centos5
Exception in thread "ThinBackup Worker Thread thread" java.lang.Error:
java.io.FileNotFoundException: /var/lib/jenkins/jenkins/ThinBackup Worker
Thread.log (Too many open files)
at
org.jvnet.hudson.plugins.thinbackup.hudson.model.AsyncPeriodicWork.createListener(AsyncPeriodicWork.java:76)
at
org.jvnet.hudson.plugins.thinbackup.hudson.model.AsyncPeriodicWork$1.run(AsyncPeriodicWork.java:50)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.io.FileNotFoundException:
/var/lib/jenkins/jenkins/ThinBackup Worker Thread.log (Too many open files)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:212)
at java.io.FileOutputStream.<init>(FileOutputStream.java:165)
at hudson.util.StreamTaskListener.<init>(StreamTaskListener.java:97)
at hudson.util.StreamTaskListener.<init>(StreamTaskListener.java:90)
at
org.jvnet.hudson.plugins.thinbackup.hudson.model.AsyncPeriodicWork.createListener(AsyncPeriodicWork.java:74)
... 2 more
Apr 23, 2013 1:30:57 PM hudson.triggers.SCMTrigger$Runner runPolling
SEVERE: Failed to record SCM polling for
hudson.model.FreeStyleProject@28327b06[01-BEER-python]
java.io.FileNotFoundException:
/var/lib/jenkins/jenkins/jobs/01-BEER-python/scm-polling.log (Too many open
files)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:212)
at java.io.FileOutputStream.<init>(FileOutputStream.java:165)
at hudson.util.StreamTaskListener.<init>(StreamTaskListener.java:97)
at hudson.util.StreamTaskListener.<init>(StreamTaskListener.java:90)
at hudson.triggers.SCMTrigger$Runner.runPolling(SCMTrigger.java:433)
at hudson.triggers.SCMTrigger$Runner.run(SCMTrigger.java:468)
at
hudson.util.SequentialExecutionQueue$QueueEntry.run(SequentialExecutionQueue.java:118)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at
java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:722)
...
What can we do about this?
Thanks,
roman
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