Liang-Chi Hsieh created SPARK-13903:
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Summary: Modify output nullability with constraints for Join
operator
Key: SPARK-13903
URL: https://issues.apache.org/jira/browse/SPARK-13903
Project: Spark
Issue Type: Improvement
Components: SQL
Reporter: Liang-Chi Hsieh
With constraints and optimization, we can make sure some outputs of a Join
operator are not nulls. We should modify output nullability accordingly. We can
use this information in later execution to avoid null checking.
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