private Object executeObservable(HystrixInvokable invokable, ExecutionType executionType, final MetaHolder metaHolder) { return mapObservable(((Observable) CommandExecutor.execute(invokable, executionType, metaHolder)) .onErrorResumeNext(new Func1<Throwable, Observable>() { @Override public Observable call(Throwable throwable) { if (throwable instanceof HystrixBadRequestException) { return Observable.error(throwable.getCause()); } else if (throwable instanceof HystrixRuntimeException) { HystrixRuntimeException hystrixRuntimeException = (HystrixRuntimeException) throwable; return Observable.error(hystrixRuntimeExceptionToThrowable(metaHolder, hystrixRuntimeException)); } return Observable.error(throwable); } }), metaHolder); }