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Posted to commits@cassandra.apache.org by "Jeff Jirsa (JIRA)" <ji...@apache.org> on 2017/08/10 18:09:00 UTC
[jira] [Commented] (CASSANDRA-13754) FastThreadLocal leaks memory
[ https://issues.apache.org/jira/browse/CASSANDRA-13754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16122012#comment-16122012 ]
Jeff Jirsa commented on CASSANDRA-13754:
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What version are you on [~urandom] (or really, which version of netty is in the classpath) ?
> FastThreadLocal leaks memory
> ----------------------------
>
> Key: CASSANDRA-13754
> URL: https://issues.apache.org/jira/browse/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|https://git-wip-us.apache.org/repos/asf?p=cassandra.git;a=commit;h=cecbe17e3eafc052acc13950494f7dddf026aa54] fixes the issue.
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