Yijie Shen created SPARK-2342:
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Summary: Evaluation helper's output type doesn't conform to input
type
Key: SPARK-2342
URL: https://issues.apache.org/jira/browse/SPARK-2342
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 1.0.0
Reporter: Yijie Shen
Priority: Minor
In sql/catalyst/org/apache/spark/sql/catalyst/expressions.scala
protected final def n2 ( i: Row, e1: Expression, e2: Expression, f:
((Numeric[Any], Any, Any) => Any)): Any
is intended to do computations for Numeric add/Minus/Multipy.
Just as the comment suggest : "Those expressions are supposed to be in the same
data type, and also the return type."
But in code, function f was casted to function signature:
(Numeric[n.JvmType], n.JvmType, n.JvmType) => Int
I thought it as a typo and the correct should be:
(Numeric[n.JvmType], n.JvmType, n.JvmType) => n.JvmType
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