You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@spark.apache.org by "Jerry Z (JIRA)" <ji...@apache.org> on 2015/08/07 19:14:45 UTC

[jira] [Created] (SPARK-9744) Add RDD method to map with lag and lead

Jerry Z created SPARK-9744:
------------------------------

             Summary: Add RDD method to map with lag and lead
                 Key: SPARK-9744
                 URL: https://issues.apache.org/jira/browse/SPARK-9744
             Project: Spark
          Issue Type: Wish
            Reporter: Jerry Z


To avoid zipping with index and doing numerous mapping and joins, having a single method call to map with an additional two parameters (1: list of offsets [(-) for lag, 0 for current and (+) for lead])) and (2:default value). The other difference to the map function takes an argument of List<T> and not just T.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org