[ https://issues.apache.org/jira/browse/SPARK-12795?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean Owen updated SPARK-12795: ------------------------------ Component/s: SQL > Whole stage codegen > ------------------- > > Key: SPARK-12795 > URL: https://issues.apache.org/jira/browse/SPARK-12795 > Project: Spark > Issue Type: Epic > Components: SQL > Reporter: Davies Liu > Assignee: Davies Liu > > Whole stage codegen is used by some modern MPP databases to archive great > performance. See http://www.vldb.org/pvldb/vol4/p539-neumann.pdf > For Spark SQL, we can compile multiple operator into a single Java function > to avoid the overhead from materialize rows and Scala iterator. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org