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https://issues.apache.org/jira/browse/FLINK-1105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14293222#comment-14293222
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Stephan Ewen commented on FLINK-1105:
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I think it would actually be nice to expose explicit sorting in general in the
API (similar to explicit partitioning). This gives people a way to enforce sort
pushdown (if the optimizer does not get it) and later allow people to cache
data sets in sorted fashion.
> Add support for locally sorted output
> -------------------------------------
>
> Key: FLINK-1105
> URL: https://issues.apache.org/jira/browse/FLINK-1105
> Project: Flink
> Issue Type: Sub-task
> Components: Java API
> Reporter: Fabian Hueske
> Assignee: Fabian Hueske
> Priority: Minor
>
> This feature will make it possible to sort the output which is sent to an
> OutputFormat to obtain a locally sorted result.
> This feature was available in the "old" Java API and has not be ported to the
> new Java API yet. Hence optimizer and runtime should already have support for
> this feature. However, the API and job generation part is missing.
> It is also a subfeature of FLINK-598 which will provide also globally sorted
> results.
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