Fabian Hueske created FLINK-10259:
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Summary: Key validation for GroupWindowAggregate is broken
Key: FLINK-10259
URL: https://issues.apache.org/jira/browse/FLINK-10259
Project: Flink
Issue Type: Bug
Components: Table API & SQL
Reporter: Fabian Hueske
Fix For: 1.6.1, 1.7.0, 1.5.4
WindowGroups have multiple equivalent keys (start, end) that should be handled
differently from other keys. The {{UpdatingPlanChecker}} uses equivalence
groups to identify equivalent keys but the keys of WindowGroups are not
correctly assigned to groups.
This means that we cannot correctly extract keys from queries that use group
windows.
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