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https://issues.apache.org/jira/browse/SPARK-14111?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-14111:
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Assignee: (was: Apache Spark)
> 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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