Hello,
I just started learning Flink (using Scala) recently, and I developed a job that, in short, does this steps: - Reads json messages from Kafka - Enriches the messages, reading data from Cassandra (using Phantom DSL) - Puts the enriched messages back to another Kafka topic. The job looks like this: env .addSource(new FlinkKafkaProducer09[String](...)) .map(MyService.enrichMessage _) // Returns Option .filter(!_.isEmpty) .map(_.get) .map(enrichedMessageToJsonMapper) .addSink(new FlinkKafkaConsumer09[String](...))) The "enrichMessage" method is where I'm using Phantom DSL to query Cassandra, and I would like to return a Future, but I can't figure out a way to do it right now, so I'm using "Await" to force the resolution and return a result. Is there a way to use a Future here? I do have a second job that is updating the data in Cassandra, and since I don't need to sink, I can have my map to return the Futures, and everything happens asynchronously. I would like to know if it's possible to have a similar behavior when I want to use a Sink (so, sink to Kafka as the Futures are completed). BTW, I'm using Flink 1.1.2 with Scala 2.11. Thanks a lot for your help! Kind regards, Albert --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus