Exactly. Because you might get multiple values with the same key, you
need to specify an aggregation to get a single value for each key.
-Matthias
On 1/23/18 9:14 AM, Dmitry Minkovsky wrote:
> KStream has a simple `#selectKey()` method, but it appears the only way to
> re-key a KTable is by
KStream has a simple `#selectKey()` method, but it appears the only way to
re-key a KTable is by doing `.toStream(mapper).groupByKey().reduce()`. Is
this correct? I'm guessing this is because an attempt to re-key a table
might result in multiple values at the new key.
