Jon Meredith created CASSANDRA-15171:
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             Summary:  In-JVM dtests leak file handles after closing cluster
                 Key: CASSANDRA-15171
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15171
             Project: Cassandra
          Issue Type: Bug
          Components: Test/dtest
            Reporter: Jon Meredith


>From the work in CASSANDRA-15170, reviewing the output from lsof shows that 
>file descriptors from closed clusters are still open after all instance 
>objects and the instance class loader have been garbage collected.

To run sustained fuzz/property based testing, file handle leaks need to be 
minimized.

Reproduce by running ResourceLeakTest.looperTest included as part of 
CASSANDRA-15170 and look at `build/test/*-lsof-final.txt`



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