[ https://issues.apache.org/jira/browse/SPARK-10496?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16250802#comment-16250802 ]
Thomas Han commented on SPARK-10496: ------------------------------------ Any updates on this? > Efficient DataFrame cumulative sum > ---------------------------------- > > Key: SPARK-10496 > URL: https://issues.apache.org/jira/browse/SPARK-10496 > Project: Spark > Issue Type: Improvement > Components: SQL > Reporter: Joseph K. Bradley > Priority: Minor > > Goal: Given a DataFrame with a numeric column X, create a new column Y which > is the cumulative sum of X. > This can be done with window functions, but it is not efficient for a large > number of rows. It could be done more efficiently using a prefix sum/scan. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org