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CircuitBreaker 'XX' tried an illegal state transition from OPEN to OPEN

See original GitHub issue

hi, team, I just write a benchmark with JMH, and find that when half-open transfer to open under multi threads, it will occur above exception.

benchmark method is very easy:

if (circuitBreaker.tryAcquirePermission()) {
    circuitBreaker.onError(1, TimeUnit.SECONDS, timeoutException);
}

error stack:

io.github.resilience4j.circuitbreaker.IllegalStateTransitionException: CircuitBreaker 'XX' tried an illegal state transition from OPEN to OPEN
	at io.github.resilience4j.circuitbreaker.CircuitBreaker$StateTransition.transitionBetween(CircuitBreaker.java:476)
	at io.github.resilience4j.circuitbreaker.internal.CircuitBreakerStateMachine.lambda$stateTransition$1(CircuitBreakerStateMachine.java:242)
	at java.util.concurrent.atomic.AtomicReference.getAndUpdate(AtomicReference.java:160)
	at io.github.resilience4j.circuitbreaker.internal.CircuitBreakerStateMachine.stateTransition(CircuitBreakerStateMachine.java:241)
	at io.github.resilience4j.circuitbreaker.internal.CircuitBreakerStateMachine.transitionToOpenState(CircuitBreakerStateMachine.java:265)
	at io.github.resilience4j.circuitbreaker.internal.CircuitBreakerStateMachine$HalfOpenState.checkIfThresholdsExceeded(CircuitBreakerStateMachine.java:712)
	at io.github.resilience4j.circuitbreaker.internal.CircuitBreakerStateMachine$HalfOpenState.onError(CircuitBreakerStateMachine.java:695)
	at io.github.resilience4j.circuitbreaker.internal.CircuitBreakerStateMachine.handleThrowable(CircuitBreakerStateMachine.java:174)
	at io.github.resilience4j.circuitbreaker.internal.CircuitBreakerStateMachine.onError(CircuitBreakerStateMachine.java:161)

before reference is half-open statemachine, but when execute stateTransition, reference already changed to open statemachine.

I’m sorry if not a problem 😃