Darren Zhang [https://community.jboss.org/people/chamdenjo] created the discussion "Jbpm5.1 concurrency issue" To view the discussion, visit: https://community.jboss.org/message/730470#730470 -------------------------------------------------------------- Now I setup 100 process instances by multi-thread, but only one thread can invoke the executeWorkItem method in HumanTaskHandler,  other threads are blocking and wait the executeWorkItem method finished. I wanna to know why? Somebody can help me, and give some advice. -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/730470#730470] Start a new discussion in jBPM Development at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]