Demonstrates .share() race condition

racecondition.java

        Observable<Integer> bomb = Observable.range(1, 1000000)
                .share();

        bomb.observeOn(Schedulers.io())
                .reduce((first, second) -> first + second)
                .subscribe(System.out::println);

        bomb.observeOn(Schedulers.io())
                .reduce((first, second) -> first + second)
                .subscribe(System.out::println);

Prints different values.