wuyi created SPARK-32090:
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Summary: UserDefinedType.equal() does not have symmetry
Key: SPARK-32090
URL: https://issues.apache.org/jira/browse/SPARK-32090
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.0.0, 2.4.0, 2.3.0, 2.2.0, 2.1.1
Reporter: wuyi
ExampleSubTypeUDT.userClass is a subclass of ExampleBaseTypeUDT.userClass
val udt1 = new ExampleBaseTypeUDT
val udt2 = new ExampleSubTypeUDT
println(udt1 == udt2) // true
println(udt2 == udt1) // false
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