Thanks for working on this issue, now I can re-enable Blue Ocean on our setup (without really using it). Just one question on the implementation of this fix: will each user have to select the "classic" URLs or can I change the default system-wide ?

Each user will have to pick for the time being.

Is there anything in particular that makes you want to go back to Classic?

Btw You can grab these fixes from the Update Center right now by upgrading the Blue Ocean Display URL plugin to 1.4

There are many reasons why (at the moment) I would prefer classic URLs by default. The Blue Ocean UI does not cover all our uses of Jenkins yet and I'm not sure it ever will (due to different vision). It's mainly enabled to track the progress and see when it becomes useful for us. I disabled it when all the "build failed" emails sent our developers to the Blue Ocean URLs.

Most of our projects are either freestyle or matrix-style projects. We are very used to the project page showing us at a glance the build status of the last changes + some trend graphs that show the evolution of build times, test runs, code style checking, build warnings, .... At the moment only the build status is available in the "activity" page. The other 2 pages ("branches", "pull requests") are not available at all due to not using multibranch pipeline. So, we converted one of the matrix projects to a multibranch pipeline and occasionally check how that is displayed in Blue Ocean. The branches tab works there, but as we are not using github (not even git), the pull requests tab will stay useless. Nowhere in Blue Ocean do we get the trend graphs we are used to in Classic.

So, I understand we are not the target audience for Blue Ocean at the moment and that's fine with me. I only have it enabled because I am interested in Blue Ocean and want to track its progress. As we're a small team, I'll just ask all our developers to change the URL setting themselves, but being able to set the default would have been preferred.

pjaytycy I am adding a system property and environment variable for you to set the default you want globally. Watch JENKINS-41578 for updates.

pjaytycy this is great feedback! We are going to focus on Trends after the initial 1.0 release. Watch JENKINS-35882 for updates Would you mind me contacting you to discuss this feature as we start designing and planning it? Which report plugins do you use?

Thanks, I'm now watching both issues for updates.
Feel free to contact me for input on the trends/report topic. However, I don't want to hijack this bug comment thread with a long chat about that topic.

The report plugins / trend graphs we currently use are:

• Test result trend (count + duration graphs) ( https://wiki.jenkins-ci.org/display/JENKINS/xUnit+Plugin )
• MSBuild warnings trend ( https://wiki.jenkins-ci.org/display/JENKINS/Warnings+Plugin )
• CppCheck ( https://wiki.jenkins-ci.org/display/JENKINS/Cppcheck+Plugin )
• Build time trend ( core )

jamesdumay what should I do to get such URL to BlueOcean UI with my build? For classic ui I'm using slackNotify with env.BUILD_URL as an url.

kamikaze hmm, good point - I don't think we are using display URL in Pipeline right now. let me follow up with a ticket.

kamikaze adding these now as part of JENKINS-41677