Kenneth Knowles created BEAM-4720:
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Summary: Boundedness and Unboundedness as a trait of a Rel so we
know during planning
Key: BEAM-4720
URL: https://issues.apache.org/jira/browse/BEAM-4720
Project: Beam
Issue Type: New Feature
Components: dsl-sql
Reporter: Kenneth Knowles
Currently we do not know the boundedness or unboundedness of a collection until
after planning is complete, so it cannot influence the plan. Instead,
BeamJoinRel makes post-planning decisions about what sort of join to implement.
We should move this into the planning phase. I think Calcite traits are the
intended way to do this.
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