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https://issues.apache.org/jira/browse/KUDU-1438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16594418#comment-16594418
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Grant Henke commented on KUDU-1438:
-----------------------------------
Netty 3.10.6, released in June 2016, is the last ever Netty 3 release:
[https://netty.io/news/2016/06/29/3-10-6-Final.html]]
At one point people had considered waiting for Netty 5 to avoid two major
version changes, but Netty 5 work was dropped and there are no current plans
for a Netty 5. See here for details: https://github.com/netty/netty/issues/4466
> [java client] Upgrade to Netty 4
> --------------------------------
>
> Key: KUDU-1438
> URL: https://issues.apache.org/jira/browse/KUDU-1438
> Project: Kudu
> Issue Type: Improvement
> Components: client
> Reporter: Jean-Daniel Cryans
> Priority: Major
>
> Netty 4 promises better performance for certain workloads, it was an effort
> mostly led by Twitter. See their blog post about it:
> https://blog.twitter.com/2013/netty-4-at-twitter-reduced-gc-overhead
> asynchbase has a pull request for this, so our work should be similar:
> https://github.com/OpenTSDB/asynchbase/pull/116/commits
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