Hi All, The io.netty package included in flnk 1.3.2 is 4.0.23, while the latest lettuce-core (4.4) depends on netty 4.0.35.
If I include netty 4.0.35 in the app jar, it would throw java.nio.channels.UnresolvedAddressException. It seems the netty classes are mixed between versions from app jar and flink runtime. If I exclude netty from app jar, then the lettuce throws java.lang.NoSuchMethodError: io.netty.util.CharsetUtil.encoder(Ljava/nio/charset/Charset;)Ljava/nio/charset/CharsetEncoder, because it needs that method but flink's netty version do not provide. Is it a bug? Does the flink runtime provide individual class loader env for app? That is, is there some clean way for the app to use package solely from the app jar? Now my workaround is degrade the lettuce version to 4.2, because it depends on nettty 4.0.20. I also include netty into the app jar, now it seems no conflict with the flink runtime. It's weird. Please help, thanks.
