Stephan Ewen created FLINK-16245:
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Summary: Use a delegating classloader as the user code classloader
to prevent class leaks.
Key: FLINK-16245
URL: https://issues.apache.org/jira/browse/FLINK-16245
Project: Flink
Issue Type: Improvement
Components: Runtime / Task
Reporter: Stephan Ewen
Fix For: 1.11.0
As reported in FLINK-11205, a reference to the user-code ClassLoader can be
held by some libraries, causing class leaks.
One way to circumvent this class leak is if the ClassLoader that we set as the
user-code ClassLoader is a delegating ClassLoader to the real class loader, and
when closing the user code ClassLoader we null out the reference.
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