[
https://issues.apache.org/jira/browse/SPARK-15780?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15316943#comment-15316943
]
koert kuipers commented on SPARK-15780:
---------------------------------------
original discussion is here:
https://mail-archives.apache.org/mod_mbox/spark-user/201602.mbox/%3ccaaswr-7kqfmxd_cpr-_wdygafh+rarecm9olm5jkxfk14fc...@mail.gmail.com%3E
> Support mapValues on KeyValueGroupedDataset
> -------------------------------------------
>
> Key: SPARK-15780
> URL: https://issues.apache.org/jira/browse/SPARK-15780
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: koert kuipers
> Priority: Minor
>
> Currently when doing groupByKey on a Dataset the key ends up in the values
> which can be clumsy:
> {noformat}
> val ds: Dataset[(K, V)] = ...
> val grouped: KeyValueGroupedDataset[(K, (K, V))] = ds.groupByKey(_._1)
> {noformat}
> With mapValues one can create something more similar to PairRDDFunctions[K,
> V]:
> {noformat}
> val ds: Dataset[(K, V)] = ...
> val grouped: KeyValueGroupedDataset[(K, V)] =
> ds.groupByKey(_._1).mapValues(_._2)
> {noformat}
--
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
