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Improvement
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Resolution: Unresolved
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Minor
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Jenkins Version: 2.60.2
workflow-multibranch-plugin: 2.16
Currently the only way to do a heavy weight checkout is to set a system property for Jenkins java arguments. (viewable only from source code)
'-Dorg.jenkinsci.plugins.workflow.multibranch.SCMBinder.USE_HEAVYWEIGHT_CHECKOUT=true'
You would think this would be configurable per job, like it is in single pipeline job; not on a global scale via a Jenkins java argument.
This change was introduced with --.JENKINS-33273
Reason for this – I want to be able to do a PreBuildMerge action on the Jenkinsfile so the pipeline is up to date and tested with latest changes. Otherwise you are building/testing with an old pipeline which may fail after it's been accepted/merged.
Note: [If needed for testing] With latest plugins, Git PreBuildMerge extension is not valid with Multibranch Pipeline anymore. See Git-Plugin PR 513 https://github.com/jenkinsci/git-plugin/pull/513 to test with.
Is this still relevant now there is 1.0 of the git-prebuildmerge-trait plugin?