1 Node with label "A"
User 1: Submit job Y require 10x cluster resources to queue, default, using label ""
User 2: (after job Y starts) submit job Z to queue, default using label ""
What we see: Job Z doesn't start until job Y releases resources. This happens because the pending requests for job Y and Z are in partition "". However, queue default is using resources in partition "A". Pending requests in partition "" don't cause intra queue preemptions in partition "A".