Issue Type: Bug Bug
Assignee: Oleg Nenashev
Components: throttle-concurrent-builds-plugin
Created: 02/Apr/15 5:40 AM
Description:

After upgrading to 1.607 we noticed the throttle plugin doesn't always prevent jobs from running in parallel as expected.

Steps to reproduce:
1. Create a throttle category with global limit 1, per-node limit 1.
2. Create 3 jobs using the category, restricted to a node with two executors, sleep 60 as a build step.
3. Request builds of all 3 jobs.

What should happen:
4. Jobs run in sequence; 1 then 2 then 3.

What actually happens:
5. Job 1 starts building, jobs 2 and 3 wait in queue (OK).
6. After job 1 finishes, both job 2 and 3 start running (not OK).

Plugin version is 1.8.4. Issue does not appear in Jenkins 1.606 with the same version of the plugin. Issue is reproducible on a fresh install.

We were forced to downgrade back to 1.606 as a workaround (which is unfortunately not trivial due to JENKINS-27700).

Environment: Jenkins 1.607
Throttle concurrent builds plugin 1.8.4
Project: Jenkins
Priority: Critical Critical
Reporter: Tomasz Śniatowski
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