wuyi created SPARK-48791:
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Summary: Perf regression due to accumulator registration overhead
using CopyOnWriteArrayList
Key: SPARK-48791
URL: https://issues.apache.org/jira/browse/SPARK-48791
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 3.4.3, 3.3.4, 3.5.1, 4.0.0
Reporter: wuyi
We noticed query perf regression and locate the root cause is the overhead
introuduced when registering accumulators using CopyOnWriteArrayList.
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