Retry is not working for activity in child workflow

[Raushan_Kumar]

In Cadence, I am using the activity inside Async.func. In an activity, i am throwing exception when i am not getting the desired result so that it should retry. Inside the workflow, I have defined my activity as

private final Activity1 activity1 = Workflow.newActivityStub(Activity1.class, new ActivityOptions.Builder()
            .setScheduleToCloseTimeout(Duration.ofMinutes(30))
            .setRetryOptions(
                    new RetryOptions.Builder()
                            .setMaximumAttempts(3)
                            .setInitialInterval(Duration.ofSeconds(10))
                            .setMaximumInterval(Duration.ofSeconds(15))
                            .setExpiration(Duration.ofSeconds(60))
                            .build()).build());

And my activity code is :

@Override
    public Boolean methodB(Config  config){
        try{
            return clientA.method(config);
        }catch(Exception e){
            log.error("Failed with exception!");
            throw e;
        }
    }

Inside the workflow, i am calling this activity method in Async like:

List<Promise<Boolean>> promises = new ArrayList<>();
for (Config config : Configs) {
                        Promise<Boolean> promise = Async.function(
                                () -> activity1.methodB(config)
                        );
                        promises.add(promise);
                    }
Workflow.await(() -> promises.stream().allMatch(Promise::isCompleted));

In cadence web, it is showing in pending state,

But retry is not working. I am not getting why this is happening
I also wants that if all the retry attempt failed then it should return false.