rmetzger opened a new pull request #12458:
URL: https://github.com/apache/flink/pull/12458


   Due to the recent changes in 
https://issues.apache.org/jira/browse/FLINK-11086 ("Add support for Hadoop 3"),
   the shaded netty dependency in flink-runtime changed depending on the Hadoop 
dependency version.
   
   The Hadoop 3 change affects the Netty version of flink-runtime depending on 
the hadoop version you are compiling Flink with:
   - our akka expects netty 3.10.6
   - with Hadoop 2.4.1 and Hadoop 2.8.3, flink-runtime shades netty 3.6.2 (the 
e2e test passes)
   - with Hadoop 3.1.3 netty is at 3.10.5 (the e2e test fails reliably)
   
   We add Netty 3.10.6 as a dependency to flink-runtime to make sure it is not 
overridden by any other dependencies.
   
   


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