Xiao Li created SPARK-17981: ------------------------------- Summary: Incorrectly Set Nullability to False in FilterExec Key: SPARK-17981 URL: https://issues.apache.org/jira/browse/SPARK-17981 Project: Spark Issue Type: Bug Components: SQL Affects Versions: 2.0.1, 2.1.0 Reporter: Xiao Li Assignee: Xiao Li Priority: Critical
When FilterExec contains isNotNull, which could be inferred and pushed down or users specified, we convert the nullability of the involved columns if the top-layer expression is null-intolerant. However, this is not true, if the top-layer expression is not a leaf expression, it could still tolerate the null when it has null-tolerant child expression. For example, cast(coalesce(a#5, a#15) as double). Although cast is a null-intolerant expression, but obviously coalesce is a null-tolerant. When the nullability is wrong, we could generate incorrect results in different cases. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org