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  1. Jenkins
  2. JENKINS-64747

P4_CHANGELIST non-reentrant

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      Description

      This job is not a bug reported, it is intended to highlight the way that Jenkins processes shell environment variables and the impact that has on P4Jenkins variables:

       

      In the example below 3 different syncs are perfromed on 3 nodes at 3 different times. Waits occur till the end of all sync's then P4_CHANGELIST is output from each of those nodes from a shell or command prompt.

      Note how P4_CHANGELIST changes over time because  different nodes sync at '@now' at different times but at the end all nodes report the same changelist ID which does not match the value they synced to.

      $ grep "NODE_NAME|P4_CHANGELIST|syncing files at change" console.txt | grep -v syncID
      16:01:50 P4 Task: syncing files at change: 215144

      16:01:56 NODE_NAME=Linux_Node1
      16:01:56 P4_CHANGELIST=215144

      16:01:56 NODE_NAME=Linux_Node2
      16:01:56 P4_CHANGELIST=215144

      16:01:56 NODE_NAME=Windows_Node1
      16:01:56 P4_CHANGELIST=215144

      16:02:10 P4 Task: syncing files at change: 215146 # Windows_Node1 Sync

      16:02:15 NODE_NAME=Windows_Node1
      16:02:15 P4_CHANGELIST=215146

      16:02:30 P4 Task: syncing files at change: 215148 # Linux_Node2 Sync

      16:03:10 P4 Task: syncing files at change: 215152 # Linux_Node1 Sync

      16:03:14 NODE_NAME=Linux_Node1
      16:03:14 P4_CHANGELIST=215152

      16:03:25 NODE_NAME=Linux_Node1
      16:03:25 P4_CHANGELIST=215152

      16:04:34 NODE_NAME=Linux_Node2
      16:04:34 P4_CHANGELIST=215152

      16:06:56 NODE_NAME=Windows_Node1
      16:06:56 P4_CHANGELIST=215152

      **

      Each node exceutes commands in a parrallel block in a function:

      def call(Map config)
      {pipeline {
          agent any
          options { skipDefaultCheckout() }
          stages {
              stage('Parallel Stage') {
                  parallel {
                      stage('Windows_Node1') {
                          agent {
                              label "Windows_Node1"
                          }
                          stages {
                              stage('Windows_Node1 build') {
                                  steps {
                                      sleep 10
                                      bat 'set'
                                      SyncMyWorkspace(config)
                                      bat 'set'
                                  }
                              }
                              stage('Windows_Node1 Test') {
                                  steps {
                                      sleep 1000
                                      bat 'set'
                                  }
                              }
                          }
                      }                
                      stage('Linux_Node1') {
                          agent {
                              label "Linux_Node1"
                          }
                          stages {
                              stage('Linux_Node1 build') {
                                  steps {
                                      sh 'env'
                                      sleep 60
                                      SyncMyWorkspace(config)
                                      sh 'env'
                                  }
                              }
                              stage('Linux_Node1 Test') {
                                  steps {
                                      sleep 120
                                      sh 'env'
                                  }
                              }
                          }
                      }
                      stage('Linux_Node1') {
                          agent {
                              label "Linux_Node2"
                          }
                          stages {
                              stage('Linux_Node2 build') {
                                  steps {
                                      sh 'env'
                                      sleep 120
                                      SyncMyWorkspace(config)
                                  }
                              }
                              stage('Linux_Node2 Test') {
                                  steps {
                                      sleep 60
                                      sh 'env'
                                  }
                              }
                          }
                      }
                  }
              }
          }
      }}
      

       

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            Assignee:
            Unassigned Unassigned
            Reporter:
            p4karl Karl Wirth
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              Created:
              Updated: