Stephan Ewen created FLINK-14658:
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Summary: Drop ".returns()" for TypeInformation in the DataStream
API
Key: FLINK-14658
URL: https://issues.apache.org/jira/browse/FLINK-14658
Project: Flink
Issue Type: Sub-task
Components: API / DataStream
Reporter: Stephan Ewen
Fix For: 2.0.0
The pattern to use {{.map(function).returns(type)}} to override the
automatically extracted type is flawed and should not be used.
Instead, each transformation method should be overloaded to have a variant that
accepts the return type as the second argument, if in case we want to override
the type extractor.
See [FLINK-14380] for good example of why the {{.returns(type)}} pattern is
broken.
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