[jira] [Created] (FLINK-8759) Bump Netty to 4.0.56

[Shang Yuanchun (Jira)]

Nico Kruber created FLINK-8759:
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             Summary: Bump Netty to 4.0.56
                 Key: FLINK-8759
                 URL: https://issues.apache.org/jira/browse/FLINK-8759
             Project: Flink
          Issue Type: Improvement
          Components: Network
            Reporter: Nico Kruber
            Assignee: Nico Kruber
             Fix For: 1.5.0


For a bug in Netty's shutdown sequence and overall improvements in Netty, I'd like to bump the version (and stay within the 4.0 series for now). The problem we faced in the past should not be relevant for credit-based flow control anymore and can be worked around (for the fallback code path) by restoring {{LengthFieldBasedFrameDecoder}}'s old behaviour of copying contents to new buffers instead of slicing the existing one.





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