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https://issues.apache.org/jira/browse/KAFKA-3352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15188182#comment-15188182
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ASF GitHub Bot commented on KAFKA-3352:
---------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/kafka/pull/1030
> Avoid DNS reverse lookups
> -------------------------
>
> Key: KAFKA-3352
> URL: https://issues.apache.org/jira/browse/KAFKA-3352
> Project: Kafka
> Issue Type: Improvement
> Reporter: Ismael Juma
> Assignee: Ismael Juma
> Fix For: 0.10.0.0
>
>
> We use `InetSocketAddress.getHostName` in `Cluster.bootstrap` and
> `SocketServer` This call can cause a reverse DNS look-up if an IP address is
> used in the configuration. `getHostString` avoids the reverse DNS look-up.
> `InetAddress.getHostName` has the same issue and it's used in
> `SaslChannelBuilder`, `SslChannelBuilder` and `ZookeeperConsumerConnector`. I
> am not changing these because the the former two actually require the FQDN
> while the latter is on its way to deprecation.
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