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https://issues.apache.org/jira/browse/GIRAPH-840?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13901739#comment-13901739
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Pavan Kumar commented on GIRAPH-840:
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I saw that tests might fail/pass due to out of memory or gc overhead based on
the machine configuration.
So I guess, one way is to change options to default to use unpooled heap
memory, in which case I hope tests should pass.
So, how do I make that change?
> Upgrade to netty 4
> ------------------
>
> Key: GIRAPH-840
> URL: https://issues.apache.org/jira/browse/GIRAPH-840
> Project: Giraph
> Issue Type: Improvement
> Reporter: Pavan Kumar
> Assignee: Pavan Kumar
> Fix For: 1.1.0
>
> Attachments: GIRAPH-840.patch, GIRAPH-840.patch
>
>
> Off late netty 4 has earned so much praise in the community. For example,
> https://blog.twitter.com/2013/netty-4-at-twitter-reduced-gc-overhead
> A switch to netty 4 enables a significant reduction in gc pressure and also
> huge performance gains. I started working on this last Sunday and have a
> patch that shows performance gains on the order of 15-25% (total execution
> time) for some applications at Facebook. However, I only tested it with
> hadoop_facebook. So there might be issues with SASL path.
> I will release the patch today and want to open up a discussion if anyone is
> using the secure feature anymore. If not we can just deprecate it.
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