Jungtaek Lim created SPARK-26991:
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Summary: Investigate difference of `returnNullable` between
ScalaReflection.deserializerFor and JavaTypeInference.deserializerFor
Key: SPARK-26991
URL: https://issues.apache.org/jira/browse/SPARK-26991
Project: Spark
Issue Type: Task
Components: SQL
Affects Versions: 3.0.0
Reporter: Jungtaek Lim
This issue tracks the effort on investigation on difference between
ScalaReflection.deserializerFor and JavaTypeInference.deserializerFor,
especially the reason why Java side uses `returnNullable = true` whereas
`returnNullable = false`.
The origin discussion is linked here:
https://github.com/apache/spark/pull/23854#discussion_r260117702
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