Wan Kun created SPARK-32015:
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Summary: Remote inheritable thread local variables after spark
context is stopped
Key: SPARK-32015
URL: https://issues.apache.org/jira/browse/SPARK-32015
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 3.0.0
Reporter: Wan Kun
Attachments: screenshot-1.png
There is still a reference(eg. `java.lang.ApplicationShutdownHooks` ->
`org.apache.hive.common.util.ShutdownHookManager$1` -> `SparkContext`) to
`sparkContext` after the spark context is stopped, so the JVM cannot collect
that.
If we start and stop sparkSession several times, there will be a OOM exception.
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