the job "parent_job" has a param. trigger build-step, which called the job "child_job" and blocks "parent_job" till "child_job" is finished.

This causes a deadlock, because the one executor is consumed by the "parent_job", although it is just waiting. So the "child_job" will never get an available executor.

Is it possible to release the executor during the waiting time to make it available for other jobs?