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https://issues.apache.org/jira/browse/FLINK-710?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robert Metzger updated FLINK-710:
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Priority: Trivial (was: Major)
> Aggregate transformation works only with FieldPositionKeys
> ----------------------------------------------------------
>
> Key: FLINK-710
> URL:
https://issues.apache.org/jira/browse/FLINK-710> Project: Flink
> Issue Type: Improvement
> Reporter: GitHub Import
> Priority: Trivial
> Labels: github-import
> Fix For: pre-apache
>
>
> In the new Java API, Aggregate transformations can only be applied to DataSets that are grouped using field positions and to ungrouped DataSets.
> DataSets grouped with KeySelector functions are not supported.
> Since Aggregations only work on Tuple DataSets which can be grouped using the more convenient field positions, this might be OK.
> Or should we support KeySelector groupings as well for completeness?
> Opinions?
> ---------------- Imported from GitHub ----------------
> Url:
https://github.com/stratosphere/stratosphere/issues/710> Created by: [fhueske|
https://github.com/fhueske]
> Labels: enhancement, java api, question, user satisfaction,
> Milestone: Release 0.6 (unplanned)
> Created at: Tue Apr 22 14:42:52 CEST 2014
> State: open
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