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Re: [platform-dev] Jenkins build failure: All available display numbers are allocated or blacklisted
Dani has pointed you to the immediate fix (needs reboot with displays cleared because some display numbers have not been returned to pool properly).

The underlying bug is related to how the VNC plug-in for Jenkins is written. The Display numbers are not a resource that Jenkins knows how to wait on, so the build runs when it has an executor to run it, but will then fail. To resolve that would need work on Jenkins side, see https://plugins.jenkins.io/xvnc for the plug-in details. Realistically no one is likely to fix the xvnc plug-in (last had a release 3 years ago).

The "modern" solution to this will be converting the platform CI instance to run on openshift so that the xvnc plug-in is dropped from use. That is what we are doing on CDT now and we haven't seen this particular error since. (I don't know how much effort that conversion is, and/or if it is scheduled to happen?)

Jonah

~~~
Jonah Graham
Kichwa Coders
www.kichwacoders.com


On Mon, 10 Jun 2019 at 06:22, Rolf Theunissen <rolf.theunissen@xxxxxxxxx> wrote:

Hi,

Lately I had many builds fail with the error below. Apparently, the number of displays is to low. Moreover, I would rather have my build wait in the build queue for displays to become available, than fail like this.

Does anybody have an idea how to fix this?

Best regards,
Rolf Theunissen

12:11:44 Triggered by Gerrit: https://git.eclipse.org/r/142555
12:11:44 Building remotely on centslave2 (centos) in workspace /home/cbi/genie.platform/workspace/eclipse.platform.ui-Gerrit@2
12:11:44 [WS-CLEANUP] Deleting project workspace...
12:11:44 [WS-CLEANUP] Deferred wipeout is used...
12:11:44 [WS-CLEANUP] Done
12:11:44 No credentials specified
12:11:44 Cloning the remote Git repository
12:11:44 Cloning repository git://git.eclipse.org/gitroot/platform/eclipse.platform.ui.git
12:11:44  > /usr/local/bin/git init /home/cbi/genie.platform/workspace/eclipse.platform.ui-Gerrit@2 # timeout=10
12:11:44 Fetching upstream changes from git://git.eclipse.org/gitroot/platform/eclipse.platform.ui.git
12:11:44  > /usr/local/bin/git --version # timeout=10
12:11:44  > /usr/local/bin/git fetch --tags --progress git://git.eclipse.org/gitroot/platform/eclipse.platform.ui.git +refs/heads/*:refs/remotes/origin/*
12:12:15  > /usr/local/bin/git config remote.origin.url git://git.eclipse.org/gitroot/platform/eclipse.platform.ui.git # timeout=10
12:12:16  > /usr/local/bin/git config --add remote.origin.fetch +refs/heads/*:refs/remotes/origin/* # timeout=10
12:12:16  > /usr/local/bin/git config remote.origin.url git://git.eclipse.org/gitroot/platform/eclipse.platform.ui.git # timeout=10
12:12:16 Fetching upstream changes from git://git.eclipse.org/gitroot/platform/eclipse.platform.ui.git
12:12:16  > /usr/local/bin/git fetch --tags --progress git://git.eclipse.org/gitroot/platform/eclipse.platform.ui.git refs/changes/55/142555/2
12:12:20  > /usr/local/bin/git rev-parse 26d66074608c9a32f9c35c5cdd0743c5d71896f7^{commit} # timeout=10
12:12:20 JENKINS-19022: warning: possible memory leak due to Git plugin usage; see: https://wiki.jenkins-ci.org/display/JENKINS/Remove+Git+Plugin+BuildsByBranch+BuildData
12:12:20 Checking out Revision 26d66074608c9a32f9c35c5cdd0743c5d71896f7 (refs/changes/55/142555/2)
12:12:20  > /usr/local/bin/git config core.sparsecheckout # timeout=10
12:12:20  > /usr/local/bin/git checkout -f 26d66074608c9a32f9c35c5cdd0743c5d71896f7
12:12:21 Commit message: "Bug 485167 - Towards running DynamicPluginsTestSuite with UiTestSuite"
12:12:21  > /usr/local/bin/git rev-parse FETCH_HEAD^{commit} # timeout=10
12:12:21  > /usr/local/bin/git rev-list --no-walk 1ab6d2484ee0dc9383bc15b651f392188740479e # timeout=10
12:12:22 FATAL: All available display numbers are allocated or blacklisted.
12:12:22 allocated: [160, 161, 162, 163, 164, 165, 166, 167, 168, 169]
12:12:22 blacklisted: []
12:12:22 java.lang.RuntimeException: All available display numbers are allocated or blacklisted.
12:12:22 allocated: [160, 161, 162, 163, 164, 165, 166, 167, 168, 169]
12:12:22 blacklisted: []
12:12:22 	at hudson.plugins.xvnc.DisplayAllocator.doAllocate(DisplayAllocator.java:59)
12:12:22 	at hudson.plugins.xvnc.DisplayAllocator.allocate(DisplayAllocator.java:49)
12:12:22 	at hudson.plugins.xvnc.Xvnc.doSetUp(Xvnc.java:106)
12:12:22 	at hudson.plugins.xvnc.Xvnc.setUp(Xvnc.java:96)
12:12:22 	at jenkins.tasks.SimpleBuildWrapper.setUp(SimpleBuildWrapper.java:146)
12:12:22 	at hudson.model.Build$BuildExecution.doRun(Build.java:157)
12:12:22 	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:504)
12:12:22 	at hudson.model.Run.execute(Run.java:1810)
12:12:22 	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
12:12:22 	at hudson.model.ResourceController.execute(ResourceController.java:97)
12:12:22 	at hudson.model.Executor.run(Executor.java:429)
12:12:22 [WARNINGS] Skipping publisher since build result is FAILURE
12:12:22 Recording test results
12:12:22 ERROR: Step ?Publish JUnit test result report? failed: No test report files were found. Configuration error?
12:12:22 Archiving artifacts
12:12:23 Started calculate disk usage of build
12:12:23 Finished Calculation of disk usage of build in 0 seconds
12:12:23 Started calculate disk usage of workspace
12:12:24 Finished Calculation of disk usage of workspace in 0 seconds
12:12:24 Finished: FAILURE
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