Liang-Chi Hsieh created SPARK-24762:
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Summary: Aggregator should be able to use Option of Product encoder
Key: SPARK-24762
URL: https://issues.apache.org/jira/browse/SPARK-24762
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.4.0
Reporter: Liang-Chi Hsieh
Encoders has a limitation that we can't construct encoders for Option of
Product at top-level, because in SparkSQL entire row can't be null.
However for some use cases such as Aggregator, it should be able to construct
encoders for Option of Product at non top-level.
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