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https://issues.apache.org/jira/browse/HADOOP-12437?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arpit Agarwal updated HADOOP-12437:
-----------------------------------
Attachment: HADOOP-12437.04.patch
> dfs.datanode.dns.interface does not work with hosts file based setups
> ---------------------------------------------------------------------
>
> Key: HADOOP-12437
> URL: https://issues.apache.org/jira/browse/HADOOP-12437
> Project: Hadoop Common
> Issue Type: Bug
> Components: net, security
> Reporter: Arpit Agarwal
> Assignee: Arpit Agarwal
> Attachments: HADOOP-12437.04.patch, HDFS-9109.01.patch,
> HDFS-9109.02.patch, HDFS-9109.03.patch
>
>
> The configuration setting {{dfs.datanode.dns.interface}} lets the DataNode
> select its hostname by doing a reverse lookup of IP addresses on the specific
> network interface. This does not work {{when /etc/hosts}} is used to setup
> alternate hostnames, since {{DNS#reverseDns}} only queries the DNS servers.
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