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https://issues.apache.org/jira/browse/ZOOKEEPER-1666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13813559#comment-13813559
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Camille Fournier commented on ZOOKEEPER-1666:
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I got this into 3.5, but it requires a bit of a rewrite to work for 3.4.6. If
we want to put it there, I need you to write it to fit, [~georgecao]. LMK,
otherwise I will resolve this for just 3.5.
> Avoid Reverse DNS lookup if the hostname in connection string is literal IP
> address.
> ------------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-1666
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1666
> Project: ZooKeeper
> Issue Type: Improvement
> Components: java client
> Reporter: George Cao
> Assignee: George Cao
> Labels: patch, test
> Attachments: ZOOKEEPER-1666.patch, ZOOKEEPER-1666.patch
>
>
> In our ENV, if the InetSocketAddress.getHostName() is called and the host
> name in the connection string are literal IP address, then the call will
> trigger a reverse DNS lookup which is very slow.
> And in this situation, the host name can simply set as the IP without causing
> any problem.
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