[JENKINS-11592] NPE: Failed to record SCM polling

[jenkins-infra-bot]

This message appears since I have upgraded to 1.437 regularly:

3/11/2011 6:02:21 PM hudson.triggers.SCMTrigger$Runner runPolling
SEVERE: Failed to record SCM polling
java.lang.NullPointerException
at hudson.maven.MavenModuleSetBuild.getEnvironment(MavenModuleSetBuild.java:165)
at hudson.scm.SubversionSCM.compareRemoteRevisionWith(SubversionSCM.java:1086)
at hudson.scm.SCM._compareRemoteRevisionWith(SCM.java:356)
at hudson.scm.SCM.poll(SCM.java:373)
at hudson.model.AbstractProject.poll(AbstractProject.java:1326)
at hudson.triggers.SCMTrigger$Runner.runPolling(SCMTrigger.java:420)
at hudson.triggers.SCMTrigger$Runner.run(SCMTrigger.java:449)
at hudson.util.SequentialExecutionQueue$QueueEntry.run(SequentialExecutionQueue.java:118)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)

I have updated all plugins to latest.

---

Originally reported by schlaufuchs, imported from: NPE: Failed to record SCM polling

• assignee: kenegozi
• status: Resolved
• priority: Major
• component(s): maven-plugin, subversion-plugin
• resolution: Fixed
• resolved: 2012-11-17T11:40:32+00:00
• votes: 4
• watchers: 7
• imported: 20251212-090250

Raw content of original issue

This message appears since I have upgraded to 1.437 regularly:

3/11/2011 6:02:21 PM hudson.triggers.SCMTrigger$Runner runPolling
SEVERE: Failed to record SCM polling
java.lang.NullPointerException
        at hudson.maven.MavenModuleSetBuild.getEnvironment(MavenModuleSetBuild.java:165)
        at hudson.scm.SubversionSCM.compareRemoteRevisionWith(SubversionSCM.java:1086)
        at hudson.scm.SCM._compareRemoteRevisionWith(SCM.java:356)
        at hudson.scm.SCM.poll(SCM.java:373)
        at hudson.model.AbstractProject.poll(AbstractProject.java:1326)
        at hudson.triggers.SCMTrigger$Runner.runPolling(SCMTrigger.java:420)
        at hudson.triggers.SCMTrigger$Runner.run(SCMTrigger.java:449)
        at hudson.util.SequentialExecutionQueue$QueueEntry.run(SequentialExecutionQueue.java:118)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
        at java.util.concurrent.FutureTask.run(FutureTask.java:138)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:619)

I have updated all plugins to latest.

• environment: windows vista business, Java 1.6.0_29

[jenkins-infra-bot]

schlaufuchs:

• Original comment link
• Raw content of original comment:

  workaround by falling back to subversion plugin 1.28. It would be appreciated to learn if this is a plugin failure or an configuration issue.
  

workaround by falling back to subversion plugin 1.28. It would be appreciated to learn if this is a plugin failure or an configuration issue.

[jenkins-infra-bot]

btharper:

• Original comment link
• Raw content of original comment:

  I too am getting the same issue, this also may be related to getting:
  
  There are more SCM polling activities scheduled than handled, so the threads are not keeping up with the demands. Check if your polling is hanging, and/or increase the number of threads if necessary.
  
  I am using 1.437 and have the latest SVN plugin 1.34.
  

I too am getting the same issue, this also may be related to getting:

There are more SCM polling activities scheduled than handled, so the threads are not keeping up with the demands. Check if your polling is hanging, and/or increase the number of threads if necessary.

I am using 1.437 and have the latest SVN plugin 1.34.

[jenkins-infra-bot]

kutzi:

• Original comment link
• Raw content of original comment:

  Seems to be related to the changes done for JENKINS-8092
  I think mvn.forEnvironment() here jenkinsci/jenkins@b0b06b5#diff-2
  may return null
  

Seems to be related to the changes done for JENKINS-8092">JENKINS-8092
I think mvn.forEnvironment() here jenkinsci/jenkins@b0b06b5#diff-2
may return null

[jenkins-infra-bot]

scm_issue_link:

• Original comment link
• Raw content of original comment:

  Code changed in jenkins
  User: Christoph Kutzinski
  Path:
   core/src/main/java/hudson/model/Run.java
   maven-plugin/src/main/java/hudson/maven/MavenModuleSetBuild.java
  http://jenkins-ci.org/commit/jenkins/4f900f60d447e0e371557faef33630899434b747
  Log:
    JENKINS-11592 trying to find out where the NPE is originated
  
  
  
  

Code changed in jenkins
User: Christoph Kutzinski
Path:
core/src/main/java/hudson/model/Run.java
maven-plugin/src/main/java/hudson/maven/MavenModuleSetBuild.java
http://jenkins-ci.org/commit/jenkins/4f900f60d447e0e371557faef33630899434b747
Log:
JENKINS-11592">JENKINS-11592 trying to find out where the NPE is originated

[jenkins-infra-bot]

dogfood:

• Original comment link
• Raw content of original comment:

  Integrated in  jenkins_main_trunk #1278
       JENKINS-11592 trying to find out where the NPE is originated
  
  Christoph Kutzinski : 4f900f60d447e0e371557faef33630899434b747
  Files : 
  
  	
  maven-plugin/src/main/java/hudson/maven/MavenModuleSetBuild.java
  	
  core/src/main/java/hudson/model/Run.java
  
  
  

Integrated in jenkins_main_trunk #1278
JENKINS-11592">JENKINS-11592 trying to find out where the NPE is originated

Christoph Kutzinski : 4f900f60d447e0e371557faef33630899434b747
Files :

• maven-plugin/src/main/java/hudson/maven/MavenModuleSetBuild.java
• core/src/main/java/hudson/model/Run.java

[jenkins-infra-bot]

kutzi:

• Original comment link
• Raw content of original comment:

  Could you try this maven-plugin version and report where the new stack trace resp. any new log messages?
  http://ci.jenkins-ci.org/view/Jenkins%20core/job/jenkins_main_trunk/1278/artifact/maven-plugin/target/maven-plugin.hpi
  

Could you try this maven-plugin version and report where the new stack trace resp. any new log messages?
http://ci.jenkins-ci.org/view/Jenkins%20core/job/jenkins_main_trunk/1278/artifact/maven-plugin/target/maven-plugin.hpi

[jenkins-infra-bot]

rebaser:

• Original comment link
• Raw content of original comment:

  Reverting back to 1.33 version of teh subversion plugin fixes the issue for me
  

Reverting back to 1.33 version of teh subversion plugin fixes the issue for me

[jenkins-infra-bot]

dougborg:

• Original comment link
• Raw content of original comment:

  I am also experiencing this issue and downgrading to 1.33 (also works on 1.28) fixed it for me.
  
  I tried the 1.440-SNAPSHOT in kutzi's link and I got the same error:
  
  Nov 14, 2011 4:03:18 PM hudson.triggers.SCMTrigger$Runner runPolling
  SEVERE: Failed to record SCM polling
  java.lang.NullPointerException
          at hudson.maven.MavenModuleSetBuild.getEnvironment(MavenModuleSetBuild.java:168)
          at hudson.scm.SubversionSCM.compareRemoteRevisionWith(SubversionSCM.java:1086)
          at hudson.scm.SCM._compareRemoteRevisionWith(SCM.java:356)
          at hudson.scm.SCM.poll(SCM.java:373)
          at hudson.model.AbstractProject.poll(AbstractProject.java:1326)
          at hudson.triggers.SCMTrigger$Runner.runPolling(SCMTrigger.java:420)
          at hudson.triggers.SCMTrigger$Runner.run(SCMTrigger.java:449)
          at hudson.util.SequentialExecutionQueue$QueueEntry.run(SequentialExecutionQueue.java:118)
          at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
          at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
          at java.util.concurrent.FutureTask.run(FutureTask.java:138)
          at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
          at java.lang.Thread.run(Thread.java:662)
  
  That was using: 
  Maven Integration plugin
  1.440-SNAPSHOT (private-11/08/2011 22:30-jenkins)		
  
  Jenkins Subversion Plug-in
  1.34
  
  Do you think the null pointer might be happening at Computer.currentComputer()? Your log message is definitely not getting printed out. Also is there a reason you are not using log.getLogger().warning() instead of println()?
  

I am also experiencing this issue and downgrading to 1.33 (also works on 1.28) fixed it for me.

I tried the 1.440-SNAPSHOT in kutzi's link and I got the same error:

Nov 14, 2011 4:03:18 PM hudson.triggers.SCMTrigger$Runner runPolling
SEVERE: Failed to record SCM polling
java.lang.NullPointerException
at hudson.maven.MavenModuleSetBuild.getEnvironment(MavenModuleSetBuild.java:168)
at hudson.scm.SubversionSCM.compareRemoteRevisionWith(SubversionSCM.java:1086)
at hudson.scm.SCM._compareRemoteRevisionWith(SCM.java:356)
at hudson.scm.SCM.poll(SCM.java:373)
at hudson.model.AbstractProject.poll(AbstractProject.java:1326)
at hudson.triggers.SCMTrigger$Runner.runPolling(SCMTrigger.java:420)
at hudson.triggers.SCMTrigger$Runner.run(SCMTrigger.java:449)
at hudson.util.SequentialExecutionQueue$QueueEntry.run(SequentialExecutionQueue.java:118)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)

That was using:
Maven Integration plugin
1.440-SNAPSHOT (private-11/08/2011 22:30-jenkins)

Jenkins Subversion Plug-in
1.34

Do you think the null pointer might be happening at Computer.currentComputer()? Your log message is definitely not getting printed out. Also is there a reason you are not using log.getLogger().warning() instead of println()?

[jenkins-infra-bot]

scm_issue_link:

• Original comment link
• Raw content of original comment:

  Code changed in jenkins
  User: Christoph Kutzinski
  Path:
   changelog.html
   maven-plugin/src/main/java/hudson/maven/MavenModuleSetBuild.java
  http://jenkins-ci.org/commit/jenkins/e2d7b399210db6333affd9a0e6deac5a94a4d300
  Log:
    [FIXED JENKINS-11592] NPE in subversion polling of Maven jobs
  
  
  
  

Code changed in jenkins
User: Christoph Kutzinski
Path:
changelog.html
maven-plugin/src/main/java/hudson/maven/MavenModuleSetBuild.java
http://jenkins-ci.org/commit/jenkins/e2d7b399210db6333affd9a0e6deac5a94a4d300
Log:
[FIXED JENKINS-11592] NPE in subversion polling of Maven jobs

[jenkins-infra-bot]

kutzi:

• Original comment link
• Raw content of original comment:

  > Also is there a reason you are not using log.getLogger().warning() instead of println()?
  
  Yes, log.getLogger() is a PrintStream, ergo has no warning method
  

> Also is there a reason you are not using log.getLogger().warning() instead of println()?

Yes, log.getLogger() is a PrintStream, ergo has no warning method

[jenkins-infra-bot]

dogfood:

• Original comment link
• Raw content of original comment:

  Integrated in  jenkins_main_trunk #1292
       [FIXED JENKINS-11592] NPE in subversion polling of Maven jobs
  
  Christoph Kutzinski : e2d7b399210db6333affd9a0e6deac5a94a4d300
  Files : 
  
  	
  changelog.html
  	
  maven-plugin/src/main/java/hudson/maven/MavenModuleSetBuild.java
  
  
  

Integrated in jenkins_main_trunk #1292
[FIXED JENKINS-11592] NPE in subversion polling of Maven jobs

Christoph Kutzinski : e2d7b399210db6333affd9a0e6deac5a94a4d300
Files :

• changelog.html
• maven-plugin/src/main/java/hudson/maven/MavenModuleSetBuild.java

[jenkins-infra-bot]

kutzi:

• Original comment link
• Raw content of original comment:

  Would be great if someone could test if this fixes the bug: http://ci.jenkins-ci.org/job/jenkins_main_trunk/1292/artifact/maven-plugin/target/maven-plugin.hpi
  

Would be great if someone could test if this fixes the bug: http://ci.jenkins-ci.org/job/jenkins_main_trunk/1292/artifact/maven-plugin/target/maven-plugin.hpi

[jenkins-infra-bot]

dougborg:

• Original comment link
• Raw content of original comment:

  Kutzi, I just tried out that build and it worked; no null pointer and the job was triggered.
  
  I may have spoken a bit too soon. The job did trigger but when I turned on FINE logging I saw some exceptions being thrown further down:
  
  Nov 15, 2011 10:18:56 AM hudson.ExtensionList load
  FINE: Loading ExtensionList: class hudson.model.BuildVariableContributor
  java.lang.Throwable
  	at hudson.ExtensionList.load(ExtensionList.java:256)
  	at hudson.ExtensionList.ensureLoaded(ExtensionList.java:229)
  	at hudson.ExtensionList.iterator(ExtensionList.java:136)
  	at hudson.model.AbstractBuild.getBuildVariables(AbstractBuild.java:918)
  	at hudson.scm.SubversionSCM.compareRemoteRevisionWith(SubversionSCM.java:1087)
  	at hudson.scm.SCM._compareRemoteRevisionWith(SCM.java:356)
  	at hudson.scm.SCM.poll(SCM.java:373)
  	at hudson.model.AbstractProject.poll(AbstractProject.java:1326)
  	at hudson.triggers.SCMTrigger$Runner.runPolling(SCMTrigger.java:420)
  	at hudson.triggers.SCMTrigger$Runner.run(SCMTrigger.java:449)
  	at hudson.util.SequentialExecutionQueue$QueueEntry.run(SequentialExecutionQueue.java:118)
  	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
  	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
  	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
  	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
  	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
  	at java.lang.Thread.run(Thread.java:662)
  Nov 15, 2011 10:18:56 AM hudson.ExtensionList load
  FINE: Loading ExtensionList: class hudson.model.EnvironmentContributor
  java.lang.Throwable
  	at hudson.ExtensionList.load(ExtensionList.java:256)
  	at hudson.ExtensionList.ensureLoaded(ExtensionList.java:229)
  	at hudson.ExtensionList.iterator(ExtensionList.java:136)
  	at hudson.model.Run.getEnvironment(Run.java:1851)
  	at hudson.model.AbstractBuild.getEnvironment(AbstractBuild.java:810)
  	at hudson.maven.AbstractMavenBuild.getEnvironment(AbstractMavenBuild.java:59)
  	at hudson.maven.MavenModuleSetBuild.getEnvironment(MavenModuleSetBuild.java:156)
  	at hudson.scm.SubversionSCM.compareRemoteRevisionWith(SubversionSCM.java:1086)
  	at hudson.scm.SCM._compareRemoteRevisionWith(SCM.java:356)
  	at hudson.scm.SCM.poll(SCM.java:373)
  	at hudson.model.AbstractProject.poll(AbstractProject.java:1326)
  	at hudson.triggers.SCMTrigger$Runner.runPolling(SCMTrigger.java:420)
  	at hudson.triggers.SCMTrigger$Runner.run(SCMTrigger.java:449)
  	at hudson.util.SequentialExecutionQueue$QueueEntry.run(SequentialExecutionQueue.java:118)
  	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
  	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
  	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
  	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
  	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
  	at java.lang.Thread.run(Thread.java:662)
  
  
  I am running Jenkins 1.438 right now, so this could just be an incompatibility between my Jenkins version and 1.441-SNAPSHOT. Anyone else getting this?
  

Kutzi, I just tried out that build and it worked; no null pointer and the job was triggered.

I may have spoken a bit too soon. The job did trigger but when I turned on FINE logging I saw some exceptions being thrown further down:

Nov 15, 2011 10:18:56 AM hudson.ExtensionList load
FINE: Loading ExtensionList: class hudson.model.BuildVariableContributor
java.lang.Throwable
	at hudson.ExtensionList.load(ExtensionList.java:256)
	at hudson.ExtensionList.ensureLoaded(ExtensionList.java:229)
	at hudson.ExtensionList.iterator(ExtensionList.java:136)
	at hudson.model.AbstractBuild.getBuildVariables(AbstractBuild.java:918)
	at hudson.scm.SubversionSCM.compareRemoteRevisionWith(SubversionSCM.java:1087)
	at hudson.scm.SCM._compareRemoteRevisionWith(SCM.java:356)
	at hudson.scm.SCM.poll(SCM.java:373)
	at hudson.model.AbstractProject.poll(AbstractProject.java:1326)
	at hudson.triggers.SCMTrigger$Runner.runPolling(SCMTrigger.java:420)
	at hudson.triggers.SCMTrigger$Runner.run(SCMTrigger.java:449)
	at hudson.util.SequentialExecutionQueue$QueueEntry.run(SequentialExecutionQueue.java:118)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:662)
Nov 15, 2011 10:18:56 AM hudson.ExtensionList load
FINE: Loading ExtensionList: class hudson.model.EnvironmentContributor
java.lang.Throwable
	at hudson.ExtensionList.load(ExtensionList.java:256)
	at hudson.ExtensionList.ensureLoaded(ExtensionList.java:229)
	at hudson.ExtensionList.iterator(ExtensionList.java:136)
	at hudson.model.Run.getEnvironment(Run.java:1851)
	at hudson.model.AbstractBuild.getEnvironment(AbstractBuild.java:810)
	at hudson.maven.AbstractMavenBuild.getEnvironment(AbstractMavenBuild.java:59)
	at hudson.maven.MavenModuleSetBuild.getEnvironment(MavenModuleSetBuild.java:156)
	at hudson.scm.SubversionSCM.compareRemoteRevisionWith(SubversionSCM.java:1086)
	at hudson.scm.SCM._compareRemoteRevisionWith(SCM.java:356)
	at hudson.scm.SCM.poll(SCM.java:373)
	at hudson.model.AbstractProject.poll(AbstractProject.java:1326)
	at hudson.triggers.SCMTrigger$Runner.runPolling(SCMTrigger.java:420)
	at hudson.triggers.SCMTrigger$Runner.run(SCMTrigger.java:449)
	at hudson.util.SequentialExecutionQueue$QueueEntry.run(SequentialExecutionQueue.java:118)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:662)

I am running Jenkins 1.438 right now, so this could just be an incompatibility between my Jenkins version and 1.441-SNAPSHOT. Anyone else getting this?

[jenkins-infra-bot]

kutzi:

• Original comment link
• Raw content of original comment:

  > I may have spoken a bit too soon.
  
  Doug, that's okay. That's just some debugging logs - that's why they only appear if you set the log level to FINE
  

> I may have spoken a bit too soon.

Doug, that's okay. That's just some debugging logs - that's why they only appear if you set the log level to FINE

[jenkins-infra-bot]

scm_issue_link:

• Original comment link
• Raw content of original comment:

  Code changed in jenkins
  User: Christoph Kutzinski
  Path:
   test/src/main/java/org/jvnet/hudson/test/HudsonTestCase.java
   test/src/test/java/hudson/model/GetEnvironmentOutsideBuildTest.java
  http://jenkins-ci.org/commit/jenkins/83822830cf6f74a5663dfcc9acd14b13774739ae
  Log:
    Added (unfortunately yet disfunctional) regression test for JENKINS-11592
  
  
  
  

Code changed in jenkins
User: Christoph Kutzinski
Path:
test/src/main/java/org/jvnet/hudson/test/HudsonTestCase.java
test/src/test/java/hudson/model/GetEnvironmentOutsideBuildTest.java
http://jenkins-ci.org/commit/jenkins/83822830cf6f74a5663dfcc9acd14b13774739ae
Log:
Added (unfortunately yet disfunctional) regression test for JENKINS-11592">JENKINS-11592