Hi!

MessagePackFactory should override copy method to avoid such exception during ObjectMapper.copy() method invocation:

java.lang.IllegalStateException: Failed copy(): org.msgpack.jackson.dataformat.MessagePackFactory (version: 2.9.4) does not override copy(); it has to
at com.fasterxml.jackson.core.JsonFactory._checkInvalidCopy(JsonFactory.java:332)
at com.fasterxml.jackson.core.JsonFactory.copy(JsonFactory.java:320)
at com.fasterxml.jackson.databind.ObjectMapper.(ObjectMapper.java:499)
at com.fasterxml.jackson.databind.ObjectMapper.copy(ObjectMapper.java:617)
at org.redisson.codec.JsonJacksonCodec.(JsonJacksonCodec.java:106)
at org.redisson.codec.MsgPackJacksonCodec.(MsgPackJacksonCodec.java:31)