Github user rmetzger commented on the pull request:
https://github.com/apache/flink/pull/304#issuecomment-70526481
Maybe I'm missing something but in my understanding if a user is using
`DateTime` in a POJO, we would be able to serialize that efficiently with Kryo
(without writing any classname for that).
I agree that if a user is using the `Instant` class of Jodatime its either
not working or slow. But thats fine because most users are probably using
`DateTime`. Those users would have to take care of finding or implementing a
serializer for it.
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