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NullPointerException in GenericSession [message #652343]

Thu, 03 February 2011 11:09

Eclipse User

I suddenly started getting this error yesterday after migrating from Hudson to Jenkins and I am stumped as to the cause. Does anyone else have this problem? Is this a Buckminster issue, subversive issue, Jenkins issue, Jenkins-Buckminster Plug-In issue?

ERROR: An internal error occurred during: "Installing".
java.lang.NullPointerException
at org.eclipse.buckminster.subversion.GenericSession.<init>(GenericSession.java:320)
at org.eclipse.buckminster.subversive.internal.SubversiveSessio n. <init>(SubversiveSession.java:264)
at org.eclipse.buckminster.subversive.internal.SubversiveReader Type.getSession(SubversiveReaderType.java:115)
at org.eclipse.buckminster.subversion.GenericReaderType.sharePr oject(GenericReaderType.java:142)
at org.eclipse.buckminster.core.materializer.WorkspaceMateriali zer.createProjectBinding(WorkspaceMaterializer.java:497)
at org.eclipse.buckminster.core.materializer.WorkspaceMateriali zer.installLocal(WorkspaceMaterializer.java:188)
at org.eclipse.buckminster.core.materializer.WorkspaceMateriali zer.performInstallAction(WorkspaceMaterializer.java:209)
at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.installRecursive(AbstractMaterializer.java:164)
at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.delegateAndInstallRecursive(AbstractMaterializer.java:189 )
at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.installRecursive(AbstractMaterializer.java:156)
at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.delegateAndInstallRecursive(AbstractMaterializer.java:189 )
at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.installRecursive(AbstractMaterializer.java:156)
at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.delegateAndInstallRecursive(AbstractMaterializer.java:189 )
at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.installRecursive(AbstractMaterializer.java:156)
at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.delegateAndInstallRecursive(AbstractMaterializer.java:189 )
at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.installRecursive(AbstractMaterializer.java:156)
at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.delegateAndInstallRecursive(AbstractMaterializer.java:189 )
at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.installRecursive(AbstractMaterializer.java:156)
at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.performInstallActions(AbstractMaterializer.java:68)
at org.eclipse.buckminster.core.materializer.InstallerJob.runIn Workspace(InstallerJob.java:53)
at org.eclipse.core.internal.resources.InternalWorkspaceJob.run (InternalWorkspaceJob.java:38)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

Re: NullPointerException in GenericSession [message #652376 is a reply to message #652343]

Thu, 03 February 2011 12:13

Eclipse User

The NPE happens in a buckminster bundle so that suggests it's at least partly our fault. Can you please enter a bugzilla
for this?

Thanks,
Thomas Hallgren

On 2011-02-03 17:09, Chris Eagan wrote:
> I suddenly started getting this error yesterday after migrating from Hudson to Jenkins and I am stumped as to the cause.
> Does anyone else have this problem? Is this a Buckminster issue, subversive issue, Jenkins issue, Jenkins-Buckminster
> Plug-In issue?
>
> ERROR: An internal error occurred during: "Installing".
> java.lang.NullPointerException
> at org.eclipse.buckminster.subversion.GenericSession.<init>(GenericSession.java:320)
> at org.eclipse.buckminster.subversive.internal.SubversiveSessio n. <init>(SubversiveSession.java:264)
> at org.eclipse.buckminster.subversive.internal.SubversiveReader Type.getSession(SubversiveReaderType.java:115)
> at org.eclipse.buckminster.subversion.GenericReaderType.sharePr oject(GenericReaderType.java:142)
> at org.eclipse.buckminster.core.materializer.WorkspaceMateriali zer.createProjectBinding(WorkspaceMaterializer.java:497)
> at org.eclipse.buckminster.core.materializer.WorkspaceMateriali zer.installLocal(WorkspaceMaterializer.java:188)
> at org.eclipse.buckminster.core.materializer.WorkspaceMateriali zer.performInstallAction(WorkspaceMaterializer.java:209)
> at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.installRecursive(AbstractMaterializer.java:164)
> at org.eclipse.buckminster.core.materializer.AbstractMaterializ
> er.delegateAndInstallRecursive(AbstractMaterializer.java:189 )
> at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.installRecursive(AbstractMaterializer.java:156)
> at org.eclipse.buckminster.core.materializer.AbstractMaterializ
> er.delegateAndInstallRecursive(AbstractMaterializer.java:189 )
> at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.installRecursive(AbstractMaterializer.java:156)
> at org.eclipse.buckminster.core.materializer.AbstractMaterializ
> er.delegateAndInstallRecursive(AbstractMaterializer.java:189 )
> at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.installRecursive(AbstractMaterializer.java:156)
> at org.eclipse.buckminster.core.materializer.AbstractMaterializ
> er.delegateAndInstallRecursive(AbstractMaterializer.java:189 )
> at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.installRecursive(AbstractMaterializer.java:156)
> at org.eclipse.buckminster.core.materializer.AbstractMaterializ
> er.delegateAndInstallRecursive(AbstractMaterializer.java:189 )
> at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.installRecursive(AbstractMaterializer.java:156)
> at org.eclipse.buckminster.core.materializer.AbstractMaterializ er.performInstallActions(AbstractMaterializer.java:68)
> at org.eclipse.buckminster.core.materializer.InstallerJob.runIn Workspace(InstallerJob.java:53)
> at org.eclipse.core.internal.resources.InternalWorkspaceJob.run (InternalWorkspaceJob.java:38)
> at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

Re: NullPointerException in GenericSession [message #652394 is a reply to message #652376]

Thu, 03 February 2011 13:09

Eclipse User

Reported as https://bugs.eclipse.org/bugs/show_bug.cgi?id=336266

Re: NullPointerException in GenericSession [message #652430 is a reply to message #652394]

Thu, 03 February 2011 15:56

Eclipse User

Hi Chris,

just to narrow this down a litte, has buckminster been automatically
installed by the hudson/jenkins plugin, or has it been set to update
automatically?

If so, does the install/update seem to work according to the console log
of the job?

Since it started the day you moved from hudson to jenkins it very much
sounds that the plugin is at least partially to blame for this.
I promise to investigate this very soon but I hope you understand that I
need a little extra time to figure out what exactly the impact of the
rename/fork is on the code base of the plugin.

Unfortunately there wasn't much time to prepare for the rename so I'm
not surprised that you ran into issues.

Does anybody know what will happen to the hudson instance on
eclipse.org? Stick with Hudson or move to Jenkins?
I will definitely move on to jenkins and I'm wondering if enough users
will remain on hudson to justify actively maintaining the plugin for
both jenkins and hudson.

Best regards,
Johannes

Re: NullPointerException in GenericSession [message #652453 is a reply to message #652430]

Thu, 03 February 2011 19:12

Eclipse User

Yes, Buckminster is automatically installed by the hudson/jenkins plugin and has been set to update
automatically.

The install/update seem to work according to the console:

Checking for Buckminster Updates
[Buckminster_3.6_Subversive] $ /var/lib/jenkins/tools/Buckminster_3.6_Subversive/director/director -d /var/lib/jenkins/tools/Buckminster_3.6_Subversive/buckminster -p Buckminster -r "http://download.eclipse.org/tools/buckminster/headless-3.6, http://download.cloudsmith.com/buckminster/external-3.6" -uninstallIU "org.eclipse.equinox.p2.director.feature.feature.group, org.eclipse.buckminster.psf.feature.feature.group, org.eclipse.buckminster.emma.headless.feature.feature.group, org.eclipse.buckminster.pde.headless.feature.feature.group, org.eclipse.buckminster.maven.headless.feature.feature.group, org.eclipse.buckminster.core.headless.feature.feature.group, org.eclipse.buckminster.subversive.headless.feature.feature.group, org.eclipse.buckminster.git.headless.feature.feature.group, org.eclipse.buckminster.cvs.headless.feature.feature.group" -installIU "org.eclipse.equinox.p2.director.feature.feature.group, org.eclipse.buckminster.psf.feature.feature.group, org.eclipse.buckminster.pde.headless.feature.feature.group, org.eclipse.buckminster.emma.headless.feature.feature.group, org.eclipse.buckminster.maven.headless.feature.feature.group, org.eclipse.buckminster.core.headless.feature.feature.group, org.eclipse.buckminster.subversive.headless.feature.feature.group, org.eclipse.buckminster.cvs.headless.feature.feature.group, org.eclipse.buckminster.git.headless.feature.feature.group"
Installing org.eclipse.equinox.p2.director.feature.feature.group 1.2.1.v20101014-1412.
Installing org.eclipse.buckminster.psf.feature.feature.group 1.0.0.r11649.
Installing org.eclipse.buckminster.pde.headless.feature.feature.group 1.2.1.r11660.
Installing org.eclipse.buckminster.emma.headless.feature.feature.group 0.9.0.r11564.
Installing org.eclipse.buckminster.maven.headless.feature.feature.group 1.2.0.r11663.
Installing org.eclipse.buckminster.core.headless.feature.feature.group 1.3.1.r11666.
Installing org.eclipse.buckminster.subversive.headless.feature.feature.group 1.1.1.r11564.
Installing org.eclipse.buckminster.cvs.headless.feature.feature.group 1.1.0.r11564.
Installing org.eclipse.buckminster.git.headless.feature.feature.group 1.0.360.r11654.
Uninstalling org.eclipse.equinox.p2.director.feature.feature.group 1.2.1.v20101014-1412.
Uninstalling org.eclipse.buckminster.psf.feature.feature.group 1.0.0.r11649.
Uninstalling org.eclipse.buckminster.emma.headless.feature.feature.group 0.9.0.r11564.
Uninstalling org.eclipse.buckminster.pde.headless.feature.feature.group 1.2.1.r11660.
Uninstalling org.eclipse.buckminster.maven.headless.feature.feature.group 1.2.0.r11663.
Uninstalling org.eclipse.buckminster.core.headless.feature.feature.group 1.3.1.r11666.
Uninstalling org.eclipse.buckminster.subversive.headless.feature.feature.group 1.1.1.r11564.
Uninstalling org.eclipse.buckminster.git.headless.feature.feature.group 1.0.360.r11654.
Uninstalling org.eclipse.buckminster.cvs.headless.feature.feature.group 1.1.0.r11564.
Operation completed in 12438 ms.

On the bug, Thomas Hallgren noted that "This occurs when the URL passed to subversion has no scheme." which I also saw when looking at the code for Buckminster. That code hasn't been touched in almost 2 years, so it is unlikely that a recent change to Buckminster is causing this.

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