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https://issues.apache.org/jira/browse/CASSANDRA-8477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14245237#comment-14245237
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Philo Yang edited comment on CASSANDRA-8477 at 12/13/14 12:18 PM:
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The size of old gen in the node with gc trouble rise very fast, if I disable
autocompaction, the rising become much slower and it will be recycled by CMS gc
heap dump file
https://drive.google.com/file/d/0B3rZSDf9RreYSFQzQVMxX0cxMDg/view?usp=sharing
was (Author: yangzhe1991):
The size of old gen in the node with gc trouble rise very fast, if I disable
autocompaction, the rising become much slower and it will be recycled by CMS gc
I'm uploading heap dump file
> CMS GC can not recycle objects
> ------------------------------
>
> Key: CASSANDRA-8477
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8477
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Environment: 2.1.1 or 2.1.2-SNAPSHOT(after CASSANDRA-8459 resolved)
> Reporter: Philo Yang
> Attachments: cassandra.yaml, histo.txt, jstack.txt, system.log
>
>
> I have a trouble in my cluster that CMS full gc can not reduce the size of
> old gen. Days ago I post this problem to the maillist, people think it will
> be solved by tuning the gc setting, however it doesn't work for me.
> Then I saw a similar bug in CASSANDRA-8447, but [~benedict] think it is not
> related. With the jstack on
> https://gist.github.com/yangzhe1991/755ea2a10520be1fe59a, [~benedict] find a
> bug and resolved it in CASSANDRA-8459. So I build a latest version on 2.1
> branch and run the SNAPSHOT version on the nodes with gc trouble.
> However, there is still the gc issue. So I think opening a new tick and post
> more information is a good idea. Thanks for helping me.
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