Michael Holler created FLINK-11817:
--------------------------------------
Summary: DataStream API Tutorial uses deprecated fold function
Key: FLINK-11817
URL: https://issues.apache.org/jira/browse/FLINK-11817
Project: Flink
Issue Type: Bug
Components: Documentation
Affects Versions: 1.7.2
Reporter: Michael Holler
{{WindowedStream.fold}} is a deprecated, but it's still recommended in the
tutorial documentation:
[https://ci.apache.org/projects/flink/flink-docs-release-1.7/tutorials/datastream_api.html]
Specifically this sample:
{code:java}
DataStream<Tuple2<String, Long>> result = keyedEdits
.timeWindow(Time.seconds(5))
.fold(new Tuple2<>("", 0L), new FoldFunction<WikipediaEditEvent,
Tuple2<String, Long>>() {
@Override
public Tuple2<String, Long> fold(Tuple2<String, Long> acc,
WikipediaEditEvent event) {
acc.f0 = event.getUser();
acc.f1 += event.getByteDiff();
return acc;
}
});{code}
WindowedStream suggests using {{WindowedStream.aggregate(AggregationFunction)}}
instead, but as a beginner it's difficult to understand how to go about that.
Can someone who knows the right way to migrate this code please update the
corresponding documentation?
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
