Eric Evans created CASSANDRA-13754:

             Summary: FastThreadLocal leaks memory
                 Key: CASSANDRA-13754
             Project: Cassandra
          Issue Type: Bug
          Components: Core
         Environment: OpenJDK 8u141-b15
            Reporter: Eric Evans
             Fix For: 3.11.1

After a chronic bout of {{OutOfMemoryError}} in our development environment, a 
heap analysis is showing that more than 10G of our 12G heaps are consumed by 
the {{threadLocals}} members (instances of {{java.lang.ThreadLocalMap}}) of 
various {{io.netty.util.concurrent.FastThreadLocalThread}} instances.  
 fixes the issue.

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