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Bug
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Resolution: Fixed
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Blocker
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None
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Jenkins 1.643 on CentOS 6.5
I just upgraded the Jenkins multibranch-project plugin from 0.3 to 0.4.1. When Jenkins went to restart, it never came up, and didn't say why in the logs. The last line was a statement that plugins had loaded.
I started a strace of the Java process, and it was scanning basically every single file in $JENKINS_HOME/jobs. In our environment, that directory had at least 1 million files, resulting in an extreme startup delay.
Since I'm not actually using the plugin, I've disabled and then removed it. I'd imagine a downgrade would have worked, too.
The most visibly relevant thread from jstack:
"AbstractMultiBranchProject.migrate" daemon prio=10 tid=0x00007f2010165000 nid=0x7610 runnable [0x00007f20312a7000] java.lang.Thread.State: RUNNABLE at java.io.UnixFileSystem.list(Native Method) at java.io.File.list(File.java:1116) at java.io.File.listFiles(File.java:1280) at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:478) at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:486) at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:486) at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:486) at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:486) at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:486) at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:486) at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:486) at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:486) at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:486) at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:486) at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:486) at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:486) at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:486) at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:486) at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:486) at org.apache.commons.io.FileUtils.listFiles(FileUtils.java:528) at com.github.mjdetullio.jenkins.plugins.multibranch.AbstractMultiBranchProject.migrate(AbstractMultiBranchProject.java:1126) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at hudson.init.TaskMethodFinder.invoke(TaskMethodFinder.java:106) at hudson.init.TaskMethodFinder$TaskImpl.run(TaskMethodFinder.java:176) at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282) at jenkins.model.Jenkins$8.runTask(Jenkins.java:913) at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210) at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117) 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:744)
