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From "Fabian Hueske (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (FLINK-168) Add support for sorted groups
Date Mon, 08 Sep 2014 14:52:28 GMT

     [ https://issues.apache.org/jira/browse/FLINK-168?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Fabian Hueske resolved FLINK-168.
---------------------------------
    Resolution: Fixed

This has been implemented for the new Java API some time ago.
For the Scala API, this will be part of FLINK-641

> Add support for sorted groups
> -----------------------------
>
>                 Key: FLINK-168
>                 URL: https://issues.apache.org/jira/browse/FLINK-168
>             Project: Flink
>          Issue Type: Improvement
>            Reporter: GitHub Import
>              Labels: github-import
>             Fix For: pre-apache
>
>
> Add support for sorted groups (aka secondary sort) for groupBy and coGroup data streams.
> In the generic case of custom sort comparators for groupBy this could look for example
like:
>     myInput groupBy { _._1 } 
>       sortBy { (x,y) => if (x._2 < y._2) 1 else if (x._2 == y._2) 0 else -1 }
>       hadoopReduce { doSomething }
> There should also be shortcuts for (asc, desc) sorts on tuple fields.
> ---------------- Imported from GitHub ----------------
> Url: https://github.com/stratosphere/stratosphere/issues/168
> Created by: [fhueske|https://github.com/fhueske]
> Labels: enhancement, scala api, 
> Milestone: Release 0.4
> Assignee: [aljoscha|https://github.com/aljoscha]
> Created at: Wed Oct 16 16:25:07 CEST 2013
> State: open



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