Hi Dominique, FLIP-17 (Side Inputs) is not yet implemented, AFAIK.
One possible way to overcome this right now if your reference data is static and not continuously changing, is to use the State Processor API to bootstrap a savepoint with the reference data. Have you looked into that and see if it would work for you? Cheers, Gordon -- Sent from: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/