Gustavo de Morais created FLINK-40112:
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Summary: Report a changelog mode mismatch instead of a generic
planning error
Key: FLINK-40112
URL: https://issues.apache.org/jira/browse/FLINK-40112
Project: Flink
Issue Type: Improvement
Reporter: Gustavo de Morais
Assignee: Gustavo de Morais
When changelog mode inference cannot satisfy an operator's required changelog
and the failure is not at a sink, {{FlinkChangelogModeInferenceProgram}} throws
a generic "Can't generate a valid execution plan for the given query" with the
annotated plan. This does not tell the user the failure is a changelog mismatch.
Update and improve the message to state that an operator cannot produce the
changelog its consumer requires and to point the user at the changelog modes of
the operators in the plan.
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