[jira] [Commented] (FLINK-3702) DataStream API PojoFieldAccessor doesn't support nested POJOs

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-3702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15463094#comment-15463094 ] 

ASF GitHub Bot commented on FLINK-3702:
---------------------------------------

Github user rmetzger commented on the issue:

    https://github.com/apache/flink/pull/2094
  
    Thank you for your work @ggevay, and the reviews @twalthr.
    
    Is there a reason why the DataSet methods for "sum()" for example do not allow to aggregate on POJOs with this change?


> DataStream API PojoFieldAccessor doesn't support nested POJOs
> -------------------------------------------------------------
>
>                 Key: FLINK-3702
>                 URL: https://issues.apache.org/jira/browse/FLINK-3702
>             Project: Flink
>          Issue Type: Improvement
>          Components: DataStream API
>    Affects Versions: 1.0.0
>            Reporter: Robert Metzger
>            Assignee: Gabor Gevay
>
> The {{PojoFieldAccessor}} (which is used by {{.sum(String)}} and similar methods) doesn't support nested POJOs right now.
> As part of FLINK-3697 I'll add a check for a nested POJO and fail with an exception.



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