Github user attachmentgenie commented on the issue:
https://github.com/apache/flink/pull/2680
@uce i made the changes are requested. With a few slight modifications
however.
1.
`.defaultValue(null);` throws an error so i opted to use
`.noDefaultValue();` which behaves the same.
2.
You can not pass `null` as the first argument of
io.netty.bootstrap.ServerBootstra.bind() as it wants you to be explicit about
the address ( it will also validate it as a valid local address). So i added a
`if (configuredAddress == null) {` switch.
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