Fabian Hueske created FLINK-6059:
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Summary: 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
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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