Hi Chesnay,
Thanks for the reply. I think it is reasonable to remove the configuration 
argument
in AbstractUdfStreamOperator#open if it is consistently empty. I'll propose a 
discuss
about the specific actions in FLINK-6912 at a later time.


Best,
Wencong Liu











At 2023-07-18 16:38:59, "Chesnay Schepler" <ches...@apache.org> wrote:
>On 18/07/2023 10:33, Wencong Liu wrote:
>> For FLINK-6912:
>>
>>      There are three implementations of RichFunction that actually use
>> the Configuration parameter in RichFunction#open:
>>      1. ContinuousFileMonitoringFunction#open: It uses the configuration
>> to configure the FileInputFormat. [1]
>>      2. OutputFormatSinkFunction#open: It uses the configuration
>> to configure the OutputFormat. [2]
>>      3. InputFormatSourceFunction#open: It uses the configuration
>>   to configure the InputFormat. [3]
>
>And none of them should have any effect since the configuration is empty.
>
>See org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator#open.

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