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https://issues.apache.org/jira/browse/FLINK-5776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15887683#comment-15887683
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ASF GitHub Bot commented on FLINK-5776:
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Github user fhueske commented on the issue:

    https://github.com/apache/flink/pull/3418
  
    Hmm, I see. I'm usually not in favor of adding code without a clear need. 
    On the other hand, these changes are not very extensive and I can see how 
it might help to code-gen the aggregation functions.
    
    @twalthr what do you think?


> Improve XXMapRunner support create instance by carrying constructor parameters
> ------------------------------------------------------------------------------
>
>                 Key: FLINK-5776
>                 URL: https://issues.apache.org/jira/browse/FLINK-5776
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API & SQL
>            Reporter: sunjincheng
>            Assignee: sunjincheng
>
> At present, MapRunner FlatMapRunner only supports create non-parameter 
> instance, but sometimes we need to carry constructor parameters to 
> instantiate, so I would like to improve XXMapRunner support create instance 
> by carrying constructor parameters.



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