Using "job-fan-in-plugin" together with a Multibranch pipeline

[Muzamri Ahmad Sofri]

Hello, 

Has anyone tried using "job-fan-in-plugin" together with a Multibranch pipeline?

My setup goes something like this. It consists of 3 upstream projects, A, B, and C and 1 downstream project, D.

== UPSTREAM

A has 2 branches:

  - FEATURE_A1

  - FEATURE_A2

B has 2 branches:

  - FEATURE_B1

  - FEATURE_B2

C has only 1 branch:

  - FEATURE_C1

== DOWNSTREAM

D has only 1 branch:

  - MASTER

This is a snippet from my Jenkinsfile (D):

properties([

    gitLabConnection('...'),

    pipelineTriggers([

        [

            $class: 'FanInReverseBuildTrigger',

            threshold: hudson.model.Result.SUCCESS,

            upstreamProjects: 'XXX/A/FEATURE_A2, XXX/B/FEATURE_B2, XXX/C/FEATURE_C1',

            watchUpstreamRecursively: true

        ]]

    )])

I am trying to figure out why D begins building whenever either A or B finishes successfully -- I was expecting that if A and B was running concurrently, D would wait for both of them to finish first.

Docs for this plugin can be found here: https://wiki.jenkins-ci.org/display/JENKINS/JobFanIn+Plugin

I realize that the documentation doesn't directly specify that it supports multibranch (was just trying my luck when I used XXX/JOB/FEATURE instead of just XXX/JOB.)

Thank you for taking the time to read this.

Kind regards.