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https://issues.apache.org/jira/browse/CASSANDRA-14355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16493457#comment-16493457
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Jan Dörrenhaus commented on CASSANDRA-14355:
--------------------------------------------

This issue has not been touched in almost two months now. It is the last open 
issue for 3.11.3, and 3.11.3 turns out to be critical for us, since 
CASSANDRA-14087 is a showstopper for us. Can this issue be fixed soon? 
Alternatively, is it possible to push it to a 3.11.4 release, and have 3.11.3 
now?

> Memory leak
> -----------
>
>                 Key: CASSANDRA-14355
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14355
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: Debian Jessie, OpenJDK 1.8.0_151
>            Reporter: Eric Evans
>            Priority: Major
>             Fix For: 3.11.3
>
>         Attachments: 01_Screenshot from 2018-04-04 14-24-00.png, 
> 02_Screenshot from 2018-04-04 14-28-33.png, 03_Screenshot from 2018-04-04 
> 14-24-50.png
>
>
> We're seeing regular, frequent {{OutOfMemoryError}} exceptions.  Similar to 
> CASSANDRA-13754, an analysis of the heap dumps shows the heap consumed by the 
> {{threadLocals}} member of the instances of 
> {{io.netty.util.concurrent.FastThreadLocalThread}}.



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