Kent Yao created SPARK-56258:
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Summary: Make MetricUtils.stringValue lenient for unknown metric
types
Key: SPARK-56258
URL: https://issues.apache.org/jira/browse/SPARK-56258
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 4.2.0
Reporter: Kent Yao
MetricUtils.stringValue throws SparkException.internalError on unknown metric
types, which is over-defensive for a UI rendering function. A crash at display
time is worse than showing a degraded metric.
Change to best-effort rendering: log at DEBUG level and format as '[unknown] N'
with NumberFormat. This also enables downstream projects (Gluten, Comet) to
define custom metric types without Spark core throwing.
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