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https://issues.apache.org/jira/browse/FLINK-7204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16088997#comment-16088997
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ASF GitHub Bot commented on FLINK-7204:
---------------------------------------
GitHub user greghogan opened a pull request:
https://github.com/apache/flink/pull/4350
[FLINK-7204] [core] CombineHint.NONE
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.
We don't currently have unit tests for this part of the code but I'm happy
to discuss and add some.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/greghogan/flink 7204_combinehint_none
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/4350.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #4350
----
commit d08284a61d3af58cb28b47a3190c4dc31b62fa8b
Author: Greg Hogan <[email protected]>
Date: 2017-07-16T11:24:59Z
[FLINK-7204] [core] CombineHint.NONE
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.
----
> 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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