Xi Lyu created SPARK-55931:
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Summary: Add errorClassFallback for monitoring/observability when
the error length exceeds the maximum
Key: SPARK-55931
URL: https://issues.apache.org/jira/browse/SPARK-55931
Project: Spark
Issue Type: Improvement
Components: Connect
Affects Versions: 4.1.1
Reporter: Xi Lyu
When messageParameters JSON exceeds the maxMetadataSize limit, we should
surface the error class via a separate errorClassFallback metadata key to allow
interceptor/proxy inspection without interfering with the FetchErrorDetails
client/server flow.
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