Aljoscha Krettek created FLINK-1032:
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Summary: Extend POJO Field Selectors to Support Accessing Nested
Objects
Key: FLINK-1032
URL: https://issues.apache.org/jira/browse/FLINK-1032
Project: Flink
Issue Type: Bug
Reporter: Aljoscha Krettek
Assignee: Aljoscha Krettek
Right now you can only use fields of the top-level object as key fields in
groupings, joins, and co-group. This should be extended to allow using nested
fields. We have to be careful with null fields, though.
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