Kazuaki Ishizaki created SPARK-15950:
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Summary: Eliminate unreachable code at projection for complex types
Key: SPARK-15950
URL: https://issues.apache.org/jira/browse/SPARK-15950
Project: Spark
Issue Type: Improvement
Components: SQL
Reporter: Kazuaki Ishizaki
When we run a spark program with a projection for a complex type, some
unreachable code blocks are generated. It would be good to eliminate them to
reduce the total size of Java byte code in a method generated by whole stage
codegen.
{code}
val df = sparkContext.parallelize(Seq(1, 2), 1).toDF("v")
df.selectExpr("Array(v + 2, v + 3)").collect
{code}
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