Github user ConeyLiu commented on the issue:
https://github.com/apache/spark/pull/19586
Hi @jerryshao, Thanks for the reminder, it doesn't support it. I'm sorry I
did not take that into account. How about using configuration to determine
whether we should use `SerializerInstance#serializeStreamForClass[T]`. For most
case the data type should be same.
Can you give some advice? Also cc @cloud-fan @srowen
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