KafkaStreams GroupBy with new key. Can I skip repartition?

[Murilo Tavares]

Hi
I am currently doing a simple KTable groupby().aggregate() in KafkaStreams.
In the groupBy I do need to select a new key, but I know for sure that the
new key would still fall in the same partition. Because of this, I believe
the repartition would not be necessary, but my question is: is it possible
to do a groupBy, changing the key, and tell KafkaStreams to not create the
repartition topic?
Thanks
Murilo