Hi We are migrating our app to Flink 1.8.0.
We built a docker image like this as Hadoop is not anymore bundled : FROM myrepo:50000/flink:1.8.0-scala_2.11-alpine ADD --chown=flink:flink https://my-artifactory-repo/artifactory/my-repo/org/apache/flink/flink-shaded-hadoop2-uber/2.8.3-1.8.0/flink-shaded-hadoop2-uber-2.8.3-1.8.0.jar /opt/flink/lib When running Flink, we are facing the stack trace below : java.lang.NullPointerException at org.apache.flink.streaming.runtime.tasks.OperatorChain.createOutputCollector(OperatorChain.java:284) at org.apache.flink.streaming.runtime.tasks.OperatorChain.createChainedOperator(OperatorChain.java:360) at org.apache.flink.streaming.runtime.tasks.OperatorChain.createOutputCollector(OperatorChain.java:296) at org.apache.flink.streaming.runtime.tasks.OperatorChain.<init>(OperatorChain.java:133) at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:267) at org.apache.flink.runtime.taskmanager.Task.run(Task.java:711) at java.lang.Thread.run(Thread.java:748) Any idea on what's happening ? I think it's a problem with classloading. With Flink 1.7.2, every thing works fine Thanks Farouk
