Reuven Lax created BEAM-9670:
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Summary: CoGroup transform should allow widening nullability in
key schemas
Key: BEAM-9670
URL: https://issues.apache.org/jira/browse/BEAM-9670
Project: Beam
Issue Type: Bug
Components: sdk-java-core
Reporter: Reuven Lax
If the key field for one input has schema INT32 and the key field for the
second input has schema NULLABLE[INT32], CoGroup fails - complaining that the
key fields don't match. Instead CoGroup should widen the nullability
restriction, creating a schema that allows either key input.
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