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https://issues.apache.org/jira/browse/FLINK-758?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Fabian Hueske updated FLINK-758:
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Issue Type: New Feature (was: Improvement)
> Add count method to DataSet and implement CountOperator
> -------------------------------------------------------
>
> Key: FLINK-758
> URL: https://issues.apache.org/jira/browse/FLINK-758
> Project: Flink
> Issue Type: New Feature
> Reporter: GitHub Import
> Labels: github-import
> Fix For: pre-apache
>
> Attachments: pull-request-758-7518001488867571817.patch
>
>
> At the request of @twalthr. This is the count operator I've implemented some
> time ago to get the to know the new Java API. It introduces
> `DataSet.count()`, which is executed as a map (to ones) and reduce (sum up
> the ones). I initially didn't do the PR, because of the following problem:
> empty DataSets don't work as the first map won't have any input to operate on.
> If more people think that we should include this operator we can think about
> a possible solution to the problem.
> ---------------- Imported from GitHub ----------------
> Url: https://github.com/stratosphere/stratosphere/pull/758
> Created by: [uce|https://github.com/uce]
> Labels: enhancement, java api,
> Milestone: Release 0.6 (unplanned)
> Created at: Tue May 06 10:42:33 CEST 2014
> State: open
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