[JIRA] (JENKINS-42995) Pipeline stage which includes a shell script to cat a long log file can lock up the browser

[kshu...@cloudbees.com (JIRA)]

Title: Message Title

Karl Shultz created an issue   Jenkins / JENKINS-42995 Pipeline stage which includes a shell script to cat a long log file can lock up the browser Issue Type: Bug Assignee: Unassigned Attachments: image-2017-03-21-16-44-31-074.png, image-2017-03-21-16-45-37-096.png, image-2017-03-21-16-46-22-389.png, image-2017-03-21-16-47-00-745.png Components: blueocean-plugin Created: 2017/Mar/21 8:53 PM Environment: Client: Microsoft Windows 10 Professional Microsoft Edge 38.14393.0.0 Google Chrome 57.0.2987.110 (64-bit) Jenkins: Core 2.32.3 BlueOcean 1.0.0-rc1 Priority: Major Reporter: Karl Shultz Summary: When building from a Jenkinsfile which includes a stage that runs "cat /var/log/jenkins/jenkins.log," displaying the output of that shell step can cause browser performance to degrade noticably. Sometimes this will result in Chrome prompting the user to kill the tab altogether because it's gone unresponsive. Steps to recreate: 1. Create a Pipeline, using GitHub, which uses a Declarative Pipeline Jenkinsfile. 2. This Jenkinsfile should include a stage which includes the following: stage("I won a hat this weekend") { steps { echo "It was a very expensive hat." sh 'cat /var/log/jenkins/jenkins.log' } } 3. Run the build and allow it to complete. 4. Go to the stage which has the shell step which cats the Jenkins log. 5. Click on the Step which has the log file in it. In this screenshot, it's the second step, labeled as Shell Script: 6. Notice that after clicking on it, you'll see a very long log. There are 2258 lines being shown at present. At the top there's a button that says "Show complete log" 7. Click "Show complete log." In MS Edge, you'll get a thin blue line, and eventually, the tab will show as "Not responding." I was unable to get the screenshot to display the e !image-2017-03-21-16-47-00 -745.png|thumbnail! Add Comment   This message was sent by Atlassian JIRA (v7.3.0#73011-sha1:3c73d0e) -- 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. For more options, visit https://groups.google.com/d/optout.