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https://issues.apache.org/jira/browse/CASSANDRA-13754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16188758#comment-16188758
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Thomas Steinmaurer edited comment on CASSANDRA-13754 at 10/2/17 8:28 PM:
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72hrs heap utilization increase with 3.11.1 snapshot build from Sept. 25, 2017
+ cluster rolling restart marker =>
cassandra_3.11.1_snapshot_heaputilization.png
was (Author: tsteinmaurer):
72hrs heap utilization increase with 3.11.1 snapshot build from Sept. 25, 2017
+ cluster rolling restart marker:
!cassandra_3.11.1_snapshot_heaputilization.png|thumbnail!
> 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,
> cassandra_3.11.1_snapshot_heaputilization.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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