Zhan Zhang created SPARK-18637:
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Summary: Stateful UDF should be considered as nondeterministic
Key: SPARK-18637
URL: https://issues.apache.org/jira/browse/SPARK-18637
Project: Spark
Issue Type: Bug
Reporter: Zhan Zhang
If the annotation UDFType of a udf is stateful, it shoudl be considered as
non-deterministic. Otherwise, the catalyst may optimize the plan and return the
wrong result.
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