Jesse S added a comment - 2020-10-20 18:14 Running into the same thing, is there any idea as to why this is occurring?

Felipe Santos added a comment - 2020-10-20 19:09 I think changeSet is not properly populated in such cases. I did not find any workaround, but in case you're using Gerrit Code Review plugin, you can now filter the changes using the Gerrit query, where you can specify the path of files to watch. https://issues.jenkins-ci.org/browse/JENKINS-60876

Jesse S added a comment - 2020-10-20 19:46 - edited Thanks for the suggestion, but I am not. I think it might be triggered because it is passed the whole git history for a branch when a new branch is created. The plugin does not compare this branch to any others so it assumes that the complete branch history is new. My guess is that we would need to configure a 'main' branch to compare its to and only use the new changes.

Patrick McNerthney added a comment - 2025-01-30 02:58 - edited felipecassiors   I ran into this same issue and what I did to tip toe around it was put a check at the start of the pipeline code that does the include/exclude check comparing the merge branch to the target branch, and immediately returns from the build if it does not match. This check only runs if it is a merge request build job #1. Below is the snippet of code run at the start of the build. This code resides in a global, trusted pipeline library: import jenkins.scm.api.SCMRevisionAction import org.jenkinsci.plugins.workflow.cps.CpsThreadGroup if (env.CHANGE_ID && currentBuild.number == 1) {     boolean build = true     def listener = CpsThreadGroup.current().execution.owner.listener     currentBuild.rawBuild.getActions(SCMRevisionAction).each { action ->         if (build) {             def origin = action.revision.origin             def target = action.revision.target             currentBuild.rawBuild.project.parent.sources.each { source ->                 if (build) {                     if (source.source.id == action.sourceId && source.buildStrategies) {                         build = false                         source.buildStrategies.each { strategy ->                             if (!build) {                                 build = strategy.automaticBuild(                                     source.source, origin.head, origin, target, target, listener                                 )                             }                         }                     }                 }             }         }     }     if (!build) {         echo "Suppressing initial MR build due to no changes."         return     } }

Patrick McNerthney added a comment - 2025-01-30 21:33 I submitted a pull request to address this issue: https://github.com/jenkinsci/multibranch-build-strategy-extension-plugin/pull/52