Hi,

In my spout, I'm emitting a string as the messageID and under some
conditions, I'm also emitting a stream with an ArrayList of strings as the
tuple.

if (something) {
collector.emit(new Values(stringTuples), somestring);//tuples, messageID
} else {
collector.emit("streamName1", new Values(anArrayList));
}

Is there an inbuilt way in ack(Object msgId) to distinguish between the ack
of streamName1 vs the default stream? Because msgId will have to be cast
into either a String or an ArrayList.

The only way I can think of it now, is to use a try-catch. Try for String
casting. If an exception is thrown, catch it and cast as ArrayList.

Is this the best way?

-- 
Regards,
Navin

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