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https://issues.apache.org/jira/browse/HDFS-14327?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Fengnan Li updated HDFS-14327:
------------------------------
Summary: Using FQDN instead of IP for DNS resolving (was: Support security
for DNS resolving)
> Using FQDN instead of IP for DNS resolving
> ------------------------------------------
>
> Key: HDFS-14327
> URL: https://issues.apache.org/jira/browse/HDFS-14327
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Fengnan Li
> Assignee: Fengnan Li
> Priority: Major
> Attachments: HDFS-14327.001.patch
>
>
> The DNS resolving, clients will get the IP of the servers (NN/Routers) and
> use the IP addresses to access the machine. This will fail in secure
> environment as Kerberos is using the domain name in the principal so it won't
> recognize the IP addresses.
> This task is mainly adding a reverse look up on the current basis and get the
> domain name after the IP is fetched. After that clients will still use the
> domain name to access the servers.
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