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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2016/06/14 16:51:57 UTC
[jira] [Commented] (SPARK-15950) Eliminate unreachable code at
projection for complex types
[ https://issues.apache.org/jira/browse/SPARK-15950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15329874#comment-15329874 ]
Apache Spark commented on SPARK-15950:
--------------------------------------
User 'kiszk' has created a pull request for this issue:
https://github.com/apache/spark/pull/13663
> 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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