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Posted to issues@flink.apache.org by "Stephan Ewen (JIRA)" <ji...@apache.org> on 2018/05/17 18:28:00 UTC
[jira] [Closed] (FLINK-9299) ProcessWindowFunction documentation
Java examples have errors
[ https://issues.apache.org/jira/browse/FLINK-9299?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Stephan Ewen closed FLINK-9299.
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> ProcessWindowFunction documentation Java examples have errors
> -------------------------------------------------------------
>
> Key: FLINK-9299
> URL: https://issues.apache.org/jira/browse/FLINK-9299
> Project: Flink
> Issue Type: Bug
> Components: Documentation
> Affects Versions: 1.4.2
> Reporter: Ken Krugler
> Assignee: vinoyang
> Priority: Minor
> Fix For: 1.5.0
>
>
> In looking at [https://ci.apache.org/projects/flink/flink-docs-release-1.4/dev/stream/operators/windows.html#processwindowfunction-with-incremental-aggregation], I noticed a few errors...
> * "This allows to incrementally compute windows" should be "This allows it to incrementally compute windows"
> * DataStream<Tuple2<String, Long> input = ...; should be DataStream<Tuple2<String, Long>> input = ...;
> * The getResult() method needs to cast one of the accumulator values to a double, if that's what it is going to return.
> * MyProcessWindowFunction needs to extend, not implement ProcessWindowFunction
> * MyProcessWindowFunction needs to implement a process() method, not an apply() method.
> * The call to .timeWindow takes a Time parameter, not a window assigner.
>
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