Jenkins Multibranch Pipeline Indexing Issue

Question

Good day,

I am trying to setup a Multibranch pipeline on our new Jenkins instance and I encountered this error in the Scan Multibranch Pipeline Log :

No such file: E:\\Continuous Integration\\Jenkins\\jobs\\Enhanced-API\\indexing\\indexing.log

According to jenkins.err.log, I encountered a

WARNING: Caught exception evaluating: h.filterDescriptors(it,attrs.descriptors) in /view/EAPI/job/Enhanced-API/configure. Reason: java.lang.NullPointerException: Descriptor list is null for context 'class org.jenkinsci.plugins.workflow.multibranch.WorkflowMultiBranchProject' in thread 'Handling GET /view/EAPI/job/Enhanced-API/configure from 10.117.100.110 : RequestHandlerThread[#35] AbstractFolder/configure.jelly FolderLibraries/DescriptorImpl/config.jelly LibraryConfiguration/config.jelly SCMRetriever/DescriptorImpl/config.jelly MultiSCM/DescriptorImpl/config.jelly' java.lang.NullPointerException: Descriptor list is null for context 'class org.jenkinsci.plugins.workflow.multibranch.WorkflowMultiBranchProject' in thread 'Handling GET /view/EAPI/job/Enhanced-API/configure from 10.117.100.110 : RequestHandlerThread[#35] AbstractFolder/configure.jelly FolderLibraries/DescriptorImpl/config.jelly LibraryConfiguration/config.jelly SCMRetriever/DescriptorImpl/config.jelly MultiSCM/DescriptorImpl/config.jelly' at hudson.model.DescriptorVisibilityFilter.apply(DescriptorVisibilityFilter.java:73) at hudson.Functions.filterDescriptors(Functions.java:1863) at sun.reflect.GeneratedMethodAccessor293.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.commons.jexl.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:258) at org.apache.commons.jexl.parser.ASTMethod.execute(ASTMethod.java:104) at org.apache.commons.jexl.parser.ASTReference.execute(ASTReference.java:83) at org.apache.commons.jexl.parser.ASTReference.value(ASTReference.java:57) at org.apache.commons.jexl.parser.ASTReferenceExpression.value(ASTReferenceExpression.java:51) at org.apache.commons.jexl.ExpressionImpl.evaluate(ExpressionImpl.java:80) at hudson.ExpressionFactory2$JexlExpression.evaluate(ExpressionFactory2.java:74) at org.apache.commons.jelly.tags.core.CoreTagLibrary$3.run(CoreTagLibrary.java:134) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95) at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)

The version of this Jenkins is 2.85 with the following versions of Git plugin:

Git client plugin - 2.5.0

Git plugin - 3.6.0

GIT server Plugin - 1.7

GitHub API Plugin - 1.89

GitHub Branch Source Plugin - 2.2.3

GitHub plugin - 1.28.0

Any idea on why did we encounter this issue? Thanks!

Answer 1

This might help: https://issues.jenkins-ci.org/browse/JENKINS-39598

The plugin causing it is deprecated but apparently a workaround is this (I've not tested it):

touch $JENKINS_HOME/plugins/multiple-scms.jpi.disabled