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https://issues.apache.org/jira/browse/FLINK-6059?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Fabian Hueske closed FLINK-6059.
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       Resolution: Fixed
    Fix Version/s: 1.2.2
                   1.3.0

Fixed for 1.3.0 with c8eb55f17d64722bb600c1083a478ab99e53f4ec
Fixed for 1.2.2 with fdb3f65f2d6595b88edae849ae6c848e5bbfaa2d

> Reject DataSet<Row> and DataStream<Row> without RowTypeInformation
> ------------------------------------------------------------------
>
>                 Key: FLINK-6059
>                 URL: https://issues.apache.org/jira/browse/FLINK-6059
>             Project: Flink
>          Issue Type: Bug
>          Components: Table API & SQL
>    Affects Versions: 1.2.0, 1.3.0
>            Reporter: Fabian Hueske
>            Assignee: Fabian Hueske
>             Fix For: 1.3.0, 1.2.2
>
>
> It is not possible to automatically extract proper type information for 
> {{Row}} because it is not typed with generics and holds values in an 
> {{Object[]}}.
> Consequently is handled as {{GenericType<Row>}} unless a {{RowTypeInfo}} is 
> explicitly specified.
> This can lead to unexpected behavior when converting a {{DataSet<Row>}} or 
> {{DataStream<Row>}} into a Table. If the data set or data stream has a 
> {{GenericType<Row>}}, the rows are treated as atomic type and converted into 
> a single field.
> I think we should reject input types of {{GenericType<Row>}} when converting 
> data sets and data streams and request a proper {{RowTypeInfo}}. 



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