[ https://issues.apache.org/jira/browse/SPARK-8680?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean Owen updated SPARK-8680: ----------------------------- Component/s: SQL > PropagateTypes is very slow when there are lots of columns > ---------------------------------------------------------- > > Key: SPARK-8680 > URL: https://issues.apache.org/jira/browse/SPARK-8680 > Project: Spark > Issue Type: Bug > Components: SQL > Affects Versions: 1.3.1, 1.4.0 > Reporter: Davies Liu > > The time for PropagateTypes is O(N*N), N is the number of columns, which is > very slow if there many columns (>1000) > There easiest optimization could be put `q.inputSet` outside of > transformExpressions which could have about 4 times improvement for N=3000 -- 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