William Benton created SPARK-2863:
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Summary: Emulate Hive type coercion in native reimplementations of
Hive UDFs
Key: SPARK-2863
URL: https://issues.apache.org/jira/browse/SPARK-2863
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 1.0.0
Reporter: William Benton
Native reimplementations of Hive functions no longer have the same
type-coercion behavior as they would if executed via Hive. As <a
href="https://github.com/apache/spark/pull/1750#discussion_r15790970";> Michael
Armbrust points out</a>, queries like {{SELECT SQRT("2") FROM src LIMIT 1}}
succeed in Hive but fail if {{SQRT}} is implemented natively.
Spark SQL should have Hive-compatible type coercions for arguments to
natively-implemented functions.
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