Timo Walther created FLINK-7425:
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Summary: Support Map<K,V> in TypeExtractor
Key: FLINK-7425
URL: https://issues.apache.org/jira/browse/FLINK-7425
Project: Flink
Issue Type: Improvement
Components: Type Serialization System
Reporter: Timo Walther
If you print {{new TypeHint<Map<String, String>>(){}.getType()}} you will see
that even this is GenericTypeInfo. This is confusing, but maps where not
supported initially. It would be good to officially support all major Java
collections. I don't know if we can change this behavior because of backwards
compatibility.
See discussion here:
https://stackoverflow.com/questions/45621542/flink-sql-api-with-map-types-java/45622438#45622438
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