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https://issues.apache.org/jira/browse/SPARK-3655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14694499#comment-14694499
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Koert Kuipers commented on SPARK-3655:
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i assume you want to do some analysis on the values sorted by timeStamp
within each Session ID?
this is very similar to the stock price/quote example given in the
spark-sorted readme.
see:
https://github.com/tresata/spark-sorted/blob/master/README.md
also check out the unit test:
https://github.com/tresata/spark-sorted/blob/master/src/test/scala/com/tresata/spark/sorted/GroupSortedSpec.scala
On Wed, Aug 12, 2015 at 6:49 PM, SWETHARAM KASIREDDI (JIRA) <[email protected]
> Support sorting of values in addition to keys (i.e. secondary sort)
> -------------------------------------------------------------------
>
> Key: SPARK-3655
> URL: https://issues.apache.org/jira/browse/SPARK-3655
> Project: Spark
> Issue Type: New Feature
> Components: Spark Core
> Affects Versions: 1.1.0, 1.2.0
> Reporter: koert kuipers
> Assignee: Koert Kuipers
>
> Now that spark has a sort based shuffle, can we expect a secondary sort soon?
> There are some use cases where getting a sorted iterator of values per key is
> helpful.
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