I am using spring state machine 3.2.0 version and I want all my transitions and action to be executed on the same thread that sent the event.

[alisy001]

stateMachine.sendEvent(Mono.just(MessageBuilder
.withPayload(pemsEvent.getEventType())
.setHeader(Key.ADDRESS.name(), address)
.setHeader(Key.PAY_LOAD.name(), pemsEvent.getPayload()).build()))
.subscribeOn(Schedulers.immediate(), false).subscribe();

            I am using schedulers.immediate but also see see that some actions are being processed by Schedulers.parallel. why is that?

[alisy001]

@jvalkeal would you be able to guide what is wrong here?

[alisy001]

o.s.statemachine.state.AbstractState - Adding new scheduled action with subscription=reactor.core.publisher.MonoSubscribeOn$SubscribeOnSubscriber@373f2877 is the code in AbstractState that is causing it to go on separate thread. when does this happen?