That is correct, RETRACTING_FIRED_PANES is unimplemented[1].

1: https://issues.apache.org/jira/browse/BEAM-91

On Tue, Jan 21, 2020 at 8:11 AM tison <[email protected]> wrote:

> IIUC RETRACTING_FIRED_PANES is not yet implemented but only a placeholder,
> is it?
>
> Best,
> tison.
>
>
> tison <[email protected]> 于2020年1月21日周二 下午11:59写道:
>
>> Thanks for your explanation Max. I will take a look.
>>
>> Best,
>> tison.
>>
>>
>> Maximilian Michels <[email protected]> 于2020年1月21日周二 下午11:45写道:
>>
>>> Hi Tison,
>>>
>>> Beam has its own set of libraries to implement windowing. Hence, the
>>> Flink Runner does not use Flink's windowing but deploys Beam's windowing
>>> logic within a Flink operator. If you want to look in the code, have a
>>> look at WindowDoFnOperator.
>>>
>>> Cheers,
>>> Max
>>>
>>> On 21.01.20 10:35, tison wrote:
>>> > Hi guys,
>>> >
>>> > I'm curious that how does BEAM translate its AccumulationMode such
>>> > as DISCARDING_FIRED_PANES and ACCUMULATING_FIRED_PANES to Flink Runner
>>> > implementation. Since I don't find directly respective concept in
>>> Flink
>>> > world it puzzles me a lot.
>>> >
>>> > Best,
>>> > tison.
>>>
>>

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