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https://issues.apache.org/jira/browse/FLINK-7234?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16093710#comment-16093710
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ASF GitHub Bot commented on FLINK-7234:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/4372#discussion_r128351347
--- Diff: docs/dev/batch/index.md ---
@@ -205,20 +205,25 @@ data.filter(new FilterFunction<Integer>() {
<td><strong>Reduce</strong></td>
<td>
<p>Combines a group of elements into a single element by
repeatedly combining two elements
- into one. Reduce may be applied on a full data set, or on a
grouped data set.</p>
+ into one. Reduce may be applied on a full data set or on a grouped
data set.</p>
{% highlight java %}
data.reduce(new ReduceFunction<Integer> {
public Integer reduce(Integer a, Integer b) { return a + b; }
});
{% endhighlight %}
+ <p>If the reduce was applied to a grouped data set then you can
specify the way that the
--- End diff --
`If the reduce was ...` -> `If the reduce transformation was ...` or `If
the reduce function was ...`?
> Fix CombineHint documentation
> -----------------------------
>
> Key: FLINK-7234
> URL: https://issues.apache.org/jira/browse/FLINK-7234
> Project: Flink
> Issue Type: Bug
> Components: Documentation
> Affects Versions: 1.2.2, 1.4.0, 1.3.2
> Reporter: Greg Hogan
> Assignee: Greg Hogan
>
> The {{CombineHint}}
> [documentation|https://ci.apache.org/projects/flink/flink-docs-release-1.4/dev/batch/index.html]
> applies to {{DataSet#reduce}} not {{DataSet#reduceGroup}} and should also be
> note for {{DataSet#distinct}}. It is also set with
> {{.setCombineHint(CombineHint)}} rather than alongside the UDF parameter.
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