jenkinsci/throttle-concurrent-builds-plugin — pull request #23 by cfs-pure (2014-09-17 22:21:49+00:00)
Title: Include count of  builds running on a node's OneOffExecutor list

Under certain circumstances a job's build might actually be on a node's OneOffExecutor list rather than its Executor list. This works around JENKINS-24748 making it possible to reliably throttle build flow jobs.