Michael Armbrust created SPARK-18122:
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Summary: Fallback to Kryo for unknown classes in ExpressionEncoder
Key: SPARK-18122
URL: https://issues.apache.org/jira/browse/SPARK-18122
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.0.1
Reporter: Michael Armbrust
Priority: Critical
In Spark 2.0 we fail to generate an encoder if any of the fields of the class
are not of a supported type. One example is {{Option\[Set\[Int\]\]}}, but
there are many more. We should give the user the option to fall back on opaque
kryo serialization in these cases for subtrees of the encoder, rather than
failing.
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