While using Thread sleep on ParallelFlux its not waiting for sleep thread to get completed and executing onComplete() function - webclient

Question

While using Parallel on Flux i am stopping thread for some time using thread sleep, but the problem is that flux not waiting till thread sleep time and executed on onComplete on subscribe.
List str = new ArrayList<>();
str.add("spring");
str.add("webflux");
str.add("example");
AtomicInteger num = new AtomicInteger();
ParallelFlux<Object> names = Flux.fromIterable(str)
.log()
.parallel(2)
.runOn(Schedulers.boundedElastic())
.map( s-> {
if(s.equalsIgnoreCase("webflux")) {
try {
System.out.println("waiting...");
Thread.sleep(1000);
System.out.println("done...");
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return s+" "+num.incrementAndGet();
});
names.subscribe(s -> {
System.out.println("value "+s+" thread : "+Thread.currentThread().getName());
});
Output:
19:35:24.870 [main] INFO reactor.Flux.Iterable.1 - | onSubscribe([Synchronous Fuseable] FluxIterable.IterableSubscription)
19:35:24.896 [main] INFO reactor.Flux.Iterable.1 - | request(256)
19:35:24.897 [main] INFO reactor.Flux.Iterable.1 - | onNext(spring)
19:35:24.898 [main] INFO reactor.Flux.Iterable.1 - | onNext(webflux)
19:35:24.898 [main] INFO reactor.Flux.Iterable.1 - | onNext(example)
waiting...
value spring 1 thread : boundedElastic-1
value example 2 thread : boundedElastic-1
19:35:24.899 [main] INFO reactor.Flux.Iterable.1 - | onComplete()