yux created FLINK-35633:
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             Summary: Early verification and clearer error message of pipeline 
YAML definition 
                 Key: FLINK-35633
                 URL: https://issues.apache.org/jira/browse/FLINK-35633
             Project: Flink
          Issue Type: Improvement
          Components: Flink CDC
            Reporter: yux


Currently, little verifications are applied before submitting YAML pipeline job 
to Flink cluster, and errors in Transform / Route rules will be exposed as a 
runtime exception, which is hard to debug and investigate.

This ticket suggests performing Transform / Route expression validation in CDC 
CLI before submitting YAML jobs, providing clearer and more descriptive error 
messages in early.



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