Changgyoo Park created SPARK-49544:
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Summary: Severe lock contention in SparkConnectExecutionManager
Key: SPARK-49544
URL: https://issues.apache.org/jira/browse/SPARK-49544
Project: Spark
Issue Type: Improvement
Components: Connect
Affects Versions: 4.0.0
Reporter: Changgyoo Park
Critical sections protected by executionsLock can become too broad when there
are too many ExecuteHolders, e.g., >= 10^4. The problem is aggravated when
there are too many threads in the system: priority inversion.
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