Thanks Gordon and Seth for the reply. So.. the main project contains the below flink dependencies...
And the state processor project contains the following: <flink.version>1.9.0</flink.version> At the first sight I may say all the libraries match to 1.9.0 flink libraries within both projects. -- Sent from: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/