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Posted to issues@spark.apache.org by "Liang-Chi Hsieh (JIRA)" <ji...@apache.org> on 2016/03/24 04:31:25 UTC

[jira] [Created] (SPARK-14111) Correct output nullability with constraints for logical plans

Liang-Chi Hsieh created SPARK-14111:
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             Summary: Correct output nullability with constraints for logical plans
                 Key: SPARK-14111
                 URL: https://issues.apache.org/jira/browse/SPARK-14111
             Project: Spark
          Issue Type: Improvement
          Components: SQL
            Reporter: Liang-Chi Hsieh


We use output of logical plan as schema. Output nullablity is important and we should keep its correctness.

With constraints and optimization, in fact we will change output nullability of logical plans. But we don't reflect such changes in the output attributes. So the output nullablity is not correct now.



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