Github user HeartSaVioR commented on the issue:
https://github.com/apache/storm/pull/1959
@hmcl
minor: We can remove `Serializable` from RecordTranslator since `Func`
already extends it.
With or without the change mentioned above, +1.
I agree that adding Serializable to the existing interface is not safe, but
given that `Func` is only used for RecordTranslator, then this approach is
easier and clearer since most of implementations of RecordTranslator will have
Func as field, and in that case `Func` should be serializable.
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