Jia Fan created HADOOP-19049:
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Summary: Class loader leak caused by
StatisticsDataReferenceCleaner thread
Key: HADOOP-19049
URL: https://issues.apache.org/jira/browse/HADOOP-19049
Project: Hadoop Common
Issue Type: Bug
Components: common
Affects Versions: 3.3.6
Reporter: Jia Fan
The "org.apache.hadoop.fs.FileSystem$Statistics$StatisticsDataReferenceCleaner"
daemon thread was created by FileSystem.
This is fine if the thread's context class loader is the system class loader,
but it's bad if the context class loader is a custom class loader. The
reference held by this daemon thread means that the class loader can never
become eligible for GC.
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