[jira] [Created] (SPARK-19008) Avoid boxing/unboxing overhead of calling a lambda with primitive type from Dataset program

["Kazuaki Ishizaki (JIRA)" <ji...@apache.org>]

Kazuaki Ishizaki created SPARK-19008:
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             Summary: Avoid boxing/unboxing overhead of calling a lambda with primitive type from Dataset program
                 Key: SPARK-19008
                 URL: https://issues.apache.org/jira/browse/SPARK-19008
             Project: Spark
          Issue Type: Improvement
          Components: SQL
            Reporter: Kazuaki Ishizaki


In this [discussion|https://github.com/apache/spark/pull/16391#discussion_r93788919] betweem [~cloud_fan] and [~kiszk], we noticed an opportunity to avoid boxing/unboxing overhead when a Dataset program calls a lambda, which operates on a primitive type, written in Scala.
In such a case, Catalyst can directly call a method {{<primitiveType> apply(<primitiveType>);}} instead of {{Object apply(Object);}}.

Of course, the best solution seems to be [here|https://issues.apache.org/jira/browse/SPARK-14083].



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