[GitHub] flink issue #6071: [FLINK-3952][runtine] Upgrade to Netty 4.1

[pnowojski]

Github user pnowojski commented on the issue:

    https://github.com/apache/flink/pull/6071
  
    @zentol I have also fixed added a test to cover 
https://github.com/apache/flink-shaded/issues/30 in the second commit


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