Maryann Xue created SPARK-24891:
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Summary: Fix HandleNullInputsForUDF rule.
Key: SPARK-24891
URL: https://issues.apache.org/jira/browse/SPARK-24891
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.3.1
Reporter: Maryann Xue
The HandleNullInputsForUDF rule can generate new {{If}} node infinitely, thus
causing problems like match of SQL cache missed.
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