A simpler and more efficient approach would simply be the following: val stream = env.addSource(new FlinkKafkaConsumer(...))
stream .addSink(new FlinkKafkaProducer(new MyKeyedSerializationSchema(...))) env.execute() In MyKeyedSerializationSchema just override the getTargetTopic() method. That should do it :) -Jamie On Thu, Jan 12, 2017 at 12:53 PM, Paul Joireman <paul.joire...@physiq.com> wrote: Hi all, > > > Is there a simple way to read the key from a KeyedStream. Very simply > I'm trying to read a message from Kafka, separate the incoming messages by > a field in the message and write the original message back to Kafka using > that field as a new topic. I chose to partition the incoming stream by > creating a KeyedStream and using the field from the message as the key. > The only thing left is to write the message to Kafka with a producer but i > need to know the topic to write to and for that I need to be able to read > the key. Is there a way to do this? > > > Is there a better way to do this, rather than using a KeyedStream. > > > Paul > -- Jamie Grier data Artisans, Director of Applications Engineering @jamiegrier <https://twitter.com/jamiegrier> ja...@data-artisans.com
