[ https://issues.apache.org/jira/browse/SPARK-10915?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15592514#comment-15592514 ]
Davies Liu commented on SPARK-10915: ------------------------------------ [~jason.white] When a aggregate function is applied, the order of input rows is not defined (even you have a order by before the aggregate). In case that the order matters, you will have to use collect_list and UDF. > Add support for UDAFs in Python > ------------------------------- > > Key: SPARK-10915 > URL: https://issues.apache.org/jira/browse/SPARK-10915 > Project: Spark > Issue Type: Improvement > Components: PySpark, SQL > Reporter: Justin Uang > > This should support python defined lambdas. -- 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