Hey, Dominik, tnx for getting back. i've posted also by stackoverflow and David Anderson gave a good tipp where to look. https://stackoverflow.com/questions/53282967/run-flink-with-parallelism-more-than-1/53289840 issues is resolved, everything is running.
thx. again -- Sent from: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/
