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  1. Jenkins
  2. JENKINS-30934

Changing crontab settings blocks "configSubmit" for 3x60 seconds

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    • Icon: Bug Bug
    • Resolution: Fixed
    • Icon: Major Major
    • disk-usage-plugin
    • None

      With recent disk-usage plugin (0.26+), changing the crontab expressions in the global settings will block Jenkins configuration for (up to) 180 seconds (when the 3 crontab settings are modified at once).

      Taking several thread-dumps when it happens shows, successively, the following three stacks:

      "Handling POST /jenkins/configSubmit from 127.0.0.1 : RequestHandlerThread[#14]" daemon prio=10 tid=0x00007f2c4820d000 nid=0x3311 waiting on condition [0x00007f2c2e7dd000]
   java.lang.Thread.State: TIMED_WAITING (sleeping)
	at java.lang.Thread.sleep(Native Method)
	at hudson.plugins.disk_usage.DiskUsageCalculation.reschedule(DiskUsageCalculation.java:101)
	at hudson.plugins.disk_usage.DiskUsageProjectActionFactory$DescriptorImpl.configureBuildsCalculation(DiskUsageProjectActionFactory.java:359)
	at hudson.plugins.disk_usage.DiskUsageProjectActionFactory$DescriptorImpl.configure(DiskUsageProjectActionFactory.java:293)
	at jenkins.model.Jenkins.configureDescriptor(Jenkins.java:2899)
	at jenkins.model.Jenkins.doConfigSubmit(Jenkins.java:2862)
...

      "Handling POST /jenkins/configSubmit from 127.0.0.1 : RequestHandlerThread[#14]" daemon prio=10 tid=0x00007f2c4820d000 nid=0x3311 waiting on condition [0x00007f2c2e7dd000]
   java.lang.Thread.State: TIMED_WAITING (sleeping)
	at java.lang.Thread.sleep(Native Method)
	at hudson.plugins.disk_usage.DiskUsageCalculation.reschedule(DiskUsageCalculation.java:101)
	at hudson.plugins.disk_usage.DiskUsageProjectActionFactory$DescriptorImpl.configureJobsCalculation(DiskUsageProjectActionFactory.java:369)
	at hudson.plugins.disk_usage.DiskUsageProjectActionFactory$DescriptorImpl.configure(DiskUsageProjectActionFactory.java:294)
	at jenkins.model.Jenkins.configureDescriptor(Jenkins.java:2899)
	at jenkins.model.Jenkins.doConfigSubmit(Jenkins.java:2862)
...

      "Handling POST /jenkins/configSubmit from 127.0.0.1 : RequestHandlerThread[#14]" daemon prio=10 tid=0x00007f2c4820d000 nid=0x3311 waiting on condition [0x00007f2c2e7dd000]
   java.lang.Thread.State: TIMED_WAITING (sleeping)
	at java.lang.Thread.sleep(Native Method)
	at hudson.plugins.disk_usage.DiskUsageCalculation.reschedule(DiskUsageCalculation.java:101)
	at hudson.plugins.disk_usage.DiskUsageProjectActionFactory$DescriptorImpl.configureWorkspacesCalculation(DiskUsageProjectActionFactory.java:379)
	at hudson.plugins.disk_usage.DiskUsageProjectActionFactory$DescriptorImpl.configure(DiskUsageProjectActionFactory.java:295)
	at jenkins.model.Jenkins.configureDescriptor(Jenkins.java:2899)
	at jenkins.model.Jenkins.doConfigSubmit(Jenkins.java:2862)
...

      The offending commit is this one, which introduces a Thread.sleep(60000) in DiskUsageCalculation.reschedule():
      https://github.com/jenkinsci/disk-usage-plugin/commit/9ec92f4887032f3dadbe52f91a803b638fe7721e

      I don't understand (at all) the purpose of this sleep calls (is it some testing/debugging code which should have been removed before commit?), thus I'm not able to submit a PR.

      Thanks for having a look at this,
      Thomas.

            lvotypkova Lucie Votypkova
            tom_gl Thomas de Grenier de Latour
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              Created:
              Updated:
              Resolved: