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Posted to commits@cassandra.apache.org by "Thomas Steinmaurer (JIRA)" <ji...@apache.org> on 2017/10/01 11:49:02 UTC

[jira] [Updated] (CASSANDRA-13754) BTree.Builder memory leak

     [ https://issues.apache.org/jira/browse/CASSANDRA-13754?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Steinmaurer updated CASSANDRA-13754:
-------------------------------------------
    Attachment: cassandra_3.11.1_Recycler_memleak.png

> BTree.Builder memory leak
> -------------------------
>
>                 Key: CASSANDRA-13754
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13754
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: Cassandra 3.11.0, Netty 4.0.44.Final, OpenJDK 8u141-b15
>            Reporter: Eric Evans
>            Assignee: Robert Stupp
>             Fix For: 3.11.1
>
>         Attachments: cassandra_3.11.1_Recycler_memleak.png, Screenshot from 2017-09-11 16-54-43.png, Screenshot from 2017-09-13 10-39-58.png
>
>
> 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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