L. C. Hsieh created SPARK-41442:
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Summary: Only update SQLMetric value if merging with valid metric
Key: SPARK-41442
URL: https://issues.apache.org/jira/browse/SPARK-41442
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.4.0
Reporter: L. C. Hsieh
We use -1 as initial value of SQLMetric, and change it to 0 while merging with
other SQLMetric instances. A SQLMetric will be treated as invalid and filtered
out later.
While we are developing with Spark, it is trouble behavior that two invalid
SQLMetric instances merge to a valid SQLMetric because merging will set the
value to 0.
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