ProcessWindowFunction

[苗元君 <mi...@gmail.com>]

I read the doc about ProcessWindowFunction
But I the code on the flink demo is incorrect

public class MyProcessWindowFunction extends
ProcessWindowFunction<Tuple<String, Long>, String, String, TimeWindow>
{

Tuple cannot have to parameter.
I try to find a demo which ProcessWindowFunction used in window word count
demo,
I can not even find a complete correct demo with ProcessWindowFunction.

Can any one show me how to use ProcessWindowFunction in wordcount window
function with .process(ProcessWindowFunction) ?

-- 

*Yuanjun Miao*

Re: ProcessWindowFunction

[vino yang <ya...@gmail.com>]

Hi yuanjun,

There are very few examples of ProcessWindowFunction, but there are some
implementations for testing in Flink's source code for your reference.[1]

[1]:
https://github.com/apache/flink/blob/master/flink-streaming-scala/src/test/scala/org/apache/flink/streaming/api/scala/WindowTranslationTest.scala#L192

Thanks, vino.

苗元君 <mi...@gmail.com> 于2018年8月9日周四 上午10:11写道：

> I read the doc about ProcessWindowFunction
> But I the code on the flink demo is incorrect
>
> public class MyProcessWindowFunction extends ProcessWindowFunction<Tuple<String, Long>, String, String, TimeWindow> {
>
> Tuple cannot have to parameter.
> I try to find a demo which ProcessWindowFunction used in window word
> count demo,
> I can not even find a complete correct demo with ProcessWindowFunction.
>
> Can any one show me how to use ProcessWindowFunction in wordcount window
> function with .process(ProcessWindowFunction) ?
>
> --
>
> *Yuanjun Miao*
>