Szehon Ho created SPARK-52403:
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Summary: Add numRowsCopied metric to MergeRowExec
Key: SPARK-52403
URL: https://issues.apache.org/jira/browse/SPARK-52403
Project: Spark
Issue Type: New Feature
Components: SQL
Affects Versions: 4.0.0
Reporter: Szehon Ho
MergeRowsExec can record some useful information, like how many rows are not
target of any action (doesn't match any condition), which can be emitted as
metrics.
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