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From "Eric Evans (JIRA)" <>
Subject [jira] [Created] (CASSANDRA-13754) FastThreadLocal leaks memory
Date Thu, 10 Aug 2017 16:16:00 GMT
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.  Reverting [cecbe17|;a=commit;h=cecbe17e3eafc052acc13950494f7dddf026aa54]
fixes the issue.

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