Daniel Oliveira created BEAM-3003:
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Summary: In WithKeys, get coder for key more safely.
Key: BEAM-3003
URL: https://issues.apache.org/jira/browse/BEAM-3003
Project: Beam
Issue Type: Improvement
Components: sdk-java-core
Reporter: Daniel Oliveira
Assignee: Kenneth Knowles
Priority: Minor
In WithKeys.java currently the coder for the key type is chosen when the
transform is expanded. This means that there's no way to directly get the type
of the input elements, instead the type is inferred from the function or from a
java Class<> object. This means there can be mismatches between the actual type
of the input and the coder used.
WithKeys should be refactored to retrieve the coder in a safer way and avoid
the possibility of mismatches.
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