title: Jenkins - Increase number of executors for one job only
body: <p>I have a Jenkins machine with a lot of jobs running on it.
  To this Jenkins, I attached 3 slave nodes. </p>
  
  <p>Now, I only have one executor in the Jenkins because I don't wish to run multiple jobs simultaneously
  since that can cause the jobs to fail.</p>
  
  <p>BUT, I want to create just one job, that runs 3 sub-jobs simultaneously, one on every node.
  I don't mind that those jobs run together, as long as any other job wont run with them as well.</p>
  
  <p>If I increase the number of executors, Then other jobs that are scheduled to run at that time may enter the queue will start running.  Not good for me. </p>
  
  <p>Is there a plug-in that can help my situation or any other workaround to this matter? </p>
  
  <p>Thanks!</p>