[JIRA] (JENKINS-60801) Variable changes are shared between matrix (parallel) stages.

[jakub.kr...@gmail.com (JIRA)]

Title: Message Title

Jakub Krysl created an issue   Jenkins / JENKINS-60801 Variable changes are shared between matrix (parallel) stages. Issue Type: Bug Assignee: Unassigned Components: pipeline Created: 2020-01-16 18:05 Environment: Jenkins ver. 2.190.2 Pipeline: API 2.83 Pipeline: Basic Steps 2.19 Pipeline: Declarative 1.5.0 Labels: matrix pipeline Priority: Major Reporter: Jakub Krysl New matrix step provides ability to run the same code in parallel cells. But if that code assigns ANY variable (not just env), it gets overwritten later by the next cell. This is huge deal, it basically prevents from assigning any variable withing this kind of pipeline which makes it nearly useless. The condition is to set variable, have a piece of code that takes some time to execute and use the already set variable after. This can be simulated with sleep(). I boiled down my code to easily reproduce it, here is the pipeline: pipeline { parameters { booleanParam(name: 'RHEL5', defaultValue: true) booleanParam(name: 'RHEL6', defaultValue: true) booleanParam(name: 'RHEL7', defaultValue: true) } stages { stage('Matrix') { matrix { when { anyOf { _expression_ { params.RHEL5 && env.RHEL == '5' } _expression_ { params.RHEL6 && env.RHEL == '6' } _expression_ { params.RHEL7 && env.RHEL == '7' } } } axes { axis { name 'RHEL' values '5', '6', '7' } } stages { stage('Build single'){ steps { script { echo "RHEL version: " + env.RHEL myVar = "something.something.RHEL-${env.RHEL}" echo "myVar: " + myVar sleep(10) echo "AFTER RHEL version: " + env.RHEL echo "AFTER myVar: " + myVar } } } } } } } } The result of this code:   RHEL version: 5 myVar: something.something.RHEL-5 Sleeping for 10 sec RHEL version: 6 myVar: something.something.RHEL-6 Sleeping for 10 sec RHEL version: 7 myVar: something.something.RHEL-7 Sleeping for 10 sec No need to sleep any longer RHEL version: 5 myVar: something.something.RHEL-7 No need to sleep any longer RHEL version: 6 myVar: something.something.RHEL-7 No need to sleep any longer RHEL version: 7 myVar: something.something.RHEL-7 As you can see, myVar gets overwritten by the last run cell even for the other cells.     Add Comment   This message was sent by Atlassian Jira (v7.13.6#713006-sha1:cc4451f) -- You received this message because you are subscribed to the Google Groups "Jenkins Issues" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-issues+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-issues/JIRA.204130.1579197922000.631.1579197960176%40Atlassian.JIRA.