Hi Matthieu, Flink is not Java 9 compatible at the moment [1]. Although Flink can be compiled with Java 9, not all tests are currently passing. For a list of modules that have failing tests, see [2].
The problem that you found persists in Akka versions prior to 2.5.6 [3][4]. Best, Gary [1] https://issues.apache.org/jira/browse/FLINK-8033 [2] https://github.com/apache/flink/blob/700e5a6c2563253791408e8008e421d77b42f3e3/tools/travis/stage.sh#L73 [3] https://akka.io/blog/news/2017/09/28/akka-2.5.6-released [4] https://github.com/akka/akka/issues/23702 On Thu, Jan 24, 2019 at 5:04 PM Matthieu Bonneviot < matthieu.bonnev...@datadome.co> wrote: > Hi > i am working on migrating my flink cluster to 1.7.1 with java 11. > I am facing a runtime error in the taskmanager: > 2019-01-24 14:43:37,014 ERROR > akka.remote.Remoting - class [B > cannot be cast to class [C ([B and [C are in module java.base of loader > 'bootstrap') > java.lang.ClassCastException: class [B cannot be cast to class [C ([B and > [C are in module java.base of loader 'bootstrap') > at akka.remote.artery.FastHash$.ofString(LruBoundedCache.scala:18) > at > > akka.remote.serialization.ActorRefResolveCache.hash(ActorRefResolveCache.scala:61) > > This error is due to a code optimization done in akka which is not working > anymore from java 9. > > I have open an issue for more details: > https://issues.apache.org/jira/browse/FLINK-11431 > > Are you facing the same issue? > > Regards > Matthieu Bonneviot > > -- > Matthieu Bonneviot > Senior Engineer, DataDome > M +33 7 68 29 79 34 <+33+7+68+29+79+34> > E matthieu.bonnev...@datadome.co <matthieu.bonnev...@datadome.co> > W www.datadome.co > < > http://www.datadome.co?utm_source=WiseStamp&utm_medium=email&utm_term=&utm_content=&utm_campaign=signature > > > < > https://www.facebook.com/datadome/?utm_source=WiseStamp&utm_medium=email&utm_term=&utm_content=&utm_campaign=signature > > > < > https://fr.linkedin.com/company/datadome?utm_source=WiseStamp&utm_medium=email&utm_term=&utm_content=&utm_campaign=signature > > > < > https://twitter.com/data_dome?utm_source=WiseStamp&utm_medium=email&utm_term=&utm_content=&utm_campaign=signature > > > > < > https://datadome.co/forrester-strong-performer-2018/?utm_source=WiseStamp&utm_medium=email&utm_term=&utm_content=&utm_campaign=signature > > > DataDome > ranked 'Strong Performer' in latest Forrester Bot management report > < > https://datadome.co/forrester-strong-performer-2018/?utm_source=WiseStamp&utm_medium=email&utm_term=&utm_content=&utm_campaign=signature > > >
