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  1. Jenkins
  2. JENKINS-39839

Missing StandardChunkVisitor.parallelBranchEnd() and parallelEnd() events if there are nested parallels

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      Description

      workflow-api plugin version 2.6.

      For the given pipeline script, secondLevelNestedBranch1 and secondLevelNestedBranch2 parallel branches are nested inside nestedBranch.

      There are missing StandardChunkVisitor.parallelEnd() and StandardChunkVisitor.parallelBranchEnd() events for nestedBranch. This causes computing incorrect DAG and status of individual branches. Blueocean extends StandardChunkVisitor to process events and create it's DAG.

      node {
         stage ('test') { 
           echo ('Testing'); 
           parallel nestedBranch: {
             echo 'nested Branch'
             stage('nestedBranchStage') {
               echo 'running nestedBranchStage'
               parallel secondLevelNestedBranch1: {
                 echo 'secondLevelNestedBranch1'
               },secondLevelNestedBranch2: {
                 echo 'secondLevelNestedBranch2'
               }
             }
           },
          failFast: false
         } 
      }
      

      If there are only one parallel branches in nested parallel then no parallelEnd or parallelBranchEnd event is fired. See the script below:

      node {
         stage ('test') { 
           echo ('Testing'); 
           parallel nestedBranch: {
             echo 'nested Branch'
             stage('nestedBranchStage') {
               echo 'running nestedBranchStage'
               parallel secondLevelNestedBranch1: {
                 echo 'secondLevelNestedBranch1'
               }
             }
           },
          failFast: false
         } 
      }
      

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              Assignee:
              svanoort Sam Van Oort
              Reporter:
              vivek Vivek Pandey
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