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https://issues.apache.org/jira/browse/FLINK-6059?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15986974#comment-15986974
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ASF GitHub Bot commented on FLINK-6059:
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Github user fhueske commented on the issue:
https://github.com/apache/flink/pull/3546
Thanks for the review @sunjincheng121.
I will merge this fix tomorrow.
Cheers, Fabian
> 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
>
> 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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