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  1. Jenkins
  2. JENKINS-52114

Declarative Pipeline Parallel Stages Post Events non-deterministic

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      The Jenkins Declarative Pipeline is experiencing non-deterministic results when entering the post steps for parallel stages. For example, when an error is raised in one of two parallel stages and the other stage succeeds, but finish around the same time, then the successful stage executes the failure post stage, instead of the successful.

      stage("Parallel stages") {
    parallel {
        stage("Stage 1"){
            agent none
            steps {
                script {
                    // sleep 10 // when sleeping long enough, stages behave correctly.
                    error("Which post step will get executed?")
                }
            }
            post {
                success {
                    echo "Stage 1 success!"
                }
                failure {
                    echo "Stage 1 failure!"
                }
            }
        }
        stage("Stage 2"){
            agent none
            steps {
                script {
                    echo "Stage 2 code executing..."
                }
            }
            post {
                success {
                    echo "Stage 2 success!"
                }
                failure {
                    echo "Stage 2 failure!"
                }
            }
        }
    }
    post {
        success {
            echo "Parallel post steps success!"
        }
        failure {
            echo "Parallel post steps failure!"
        }
    }
}

       

      So when Stage 1 has the sleep step commented out the results I see are:

      [Stage 1] Stage 1 failure!

      [Stage 2] Stage 2 failure!

      Parallel post steps failure!

       

      But when Stage 1 has the sleep step active, the results I see are:

      [Stage 1] Stage 1 failure!

      [Stage 2] Stage 2 success!

      Parallel post steps failure!

       

      I should expect the second scenario in all situations, right?

          [JENKINS-52114] Declarative Pipeline Parallel Stages Post Events non-deterministic

            abayer Andrew Bayer
            bklos Brandon Klos
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              Created:
              Updated:
              Resolved: