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https://issues.apache.org/jira/browse/FLINK-7204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16092384#comment-16092384
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ASF GitHub Bot commented on FLINK-7204:
---------------------------------------
Github user greghogan commented on the issue:
https://github.com/apache/flink/pull/4350
@fhueske updated and manually verified. I had misinterpreted
`DriverStrategy` to imply that `SORTED_REDUCE` would not use a combiner.
> CombineHint.NONE
> ----------------
>
> Key: FLINK-7204
> URL: https://issues.apache.org/jira/browse/FLINK-7204
> Project: Flink
> Issue Type: New Feature
> Components: Core
> Affects Versions: 1.4.0
> Reporter: Greg Hogan
> Assignee: Greg Hogan
> Priority: Minor
>
> FLINK-3477 added a hash-combine preceding the reducer configured with
> {{CombineHint.HASH}} or {{CombineHint.SORT}} (default). In some cases it may
> be useful to disable the combiner in {{ReduceNode}} by specifying a new
> {{CombineHint.NONE}} value.
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