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  1. Jenkins
  2. JENKINS-34794

Jenkins doesn't start because of NPE

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    Description

      hudson.util.HudsonFailedToLoad: java.lang.NullPointerException
at hudson.WebAppMain$3.run(WebAppMain.java:237)

Caused by: java.lang.NullPointerException
at org.jvnet.hudson.plugins.monitoring.NodesListener.getNodesCollector(NodesListener.java:77)
at org.jvnet.hudson.plugins.monitoring.NodesListener.onOnline(NodesListener.java:53)
at jenkins.model.Jenkins.<init>(Jenkins.java:850)
at hudson.model.Hudson.<init>(Hudson.java:83)
at hudson.model.Hudson.<init>(Hudson.java:79)
at hudson.WebAppMain$3.run(WebAppMain.java:225)

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          evernat evernat added a comment -

          It seems that either 

          Jenkins.getInstance().getPlugin(org.jvnet.hudson.plugins.monitoring.PluginImpl.class)

          returns null or 

          PluginImpl.start()

          is not called by Jenkins.

          PluginImpl is supposed to be initialized by Jenkins because PluginImpl extends Plugin.

          How to reproduce the issue?
          And what version of Jenkins was used?

          evernat evernat added a comment - It seems that either Jenkins.getInstance().getPlugin(org.jvnet.hudson.plugins.monitoring.PluginImpl.class) returns null or PluginImpl.start() is not called by Jenkins. PluginImpl is supposed to be initialized by Jenkins because PluginImpl extends Plugin. How to reproduce the issue? And what version of Jenkins was used?
          fbelzunc Félix Belzunce Arcos added a comment -

          Unfortunately, it looks like it is a transient issue - so I don't know how to re-produce it.

          You are right. I am updating the PR right now.

          Thanks for your feedback!

          fbelzunc Félix Belzunce Arcos added a comment - Unfortunately, it looks like it is a transient issue - so I don't know how to re-produce it. You are right. I am updating the PR right now. Thanks for your feedback!
          scm_issue_link SCM/JIRA link daemon added a comment -

          Code changed in jenkins
          User: Felix Belzunce Arcos
          Path:
          src/main/java/org/jvnet/hudson/plugins/monitoring/NodesListener.java
          http://jenkins-ci.org/commit/monitoring-plugin/9630aaacd285e91b0de87b590dd76ac6d751c54f
          Log:
          [fixed JENKINS-34794] Jenkins sometimes doesn't start because of transient NPE (#5)

          [fixed JENKINS-34794] Jenkins sometimes doesn't start because of transient NPE

          scm_issue_link SCM/JIRA link daemon added a comment - Code changed in jenkins User: Felix Belzunce Arcos Path: src/main/java/org/jvnet/hudson/plugins/monitoring/NodesListener.java http://jenkins-ci.org/commit/monitoring-plugin/9630aaacd285e91b0de87b590dd76ac6d751c54f Log: [fixed JENKINS-34794] Jenkins sometimes doesn't start because of transient NPE (#5) [fixed JENKINS-34794] Jenkins sometimes doesn't start because of transient NPE
          bcoveny Bruce Coveny added a comment -

          Last night we updated to Jenkins 2.9 from 2.8 and also the monitoring plugin was updated from 1.57 to 1.59. We are no experiencing this issue and had to downgrade the plugin. When will this be released as it is marked as resolved.

          bcoveny Bruce Coveny added a comment - Last night we updated to Jenkins 2.9 from 2.8 and also the monitoring plugin was updated from 1.57 to 1.59. We are no experiencing this issue and had to downgrade the plugin. When will this be released as it is marked as resolved.
          evernat evernat added a comment -

          Hi Bruce,

          In fact, it was released just 2 hours before you ask.
          The plugin should be available in your update center now or in 24h.

          evernat evernat added a comment - Hi Bruce, In fact, it was released just 2 hours before you ask. The plugin should be available in your update center now or in 24h.

          People

            fbelzunc Félix Belzunce Arcos
            fbelzunc Félix Belzunce Arcos
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              Created:
              Updated:
              Resolved: