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https://issues.apache.org/jira/browse/HDFS-14327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16809353#comment-16809353
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Hudson commented on HDFS-14327:
-------------------------------
FAILURE: Integrated in Jenkins build Hadoop-trunk-Commit #16347 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/16347/])
HDFS-14327. Using FQDN instead of IP to access servers with DNS (inigoiri: rev
7b5b783f66f32012c00bef7593851392dd8cf2d5)
* (edit)
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/net/MockDomainNameResolver.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestConfiguredFailoverProxyProvider.java
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/DNSDomainNameResolver.java
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/DomainNameResolver.java
* (edit) hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/server/namenode/ha/AbstractNNFailoverProxyProvider.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/client/HdfsClientConfigKeys.java
> Using FQDN instead of IP to access servers with 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
> Fix For: 3.3.0
>
> Attachments: HDFS-14327.001.patch, HDFS-14327.002.patch
>
>
> With [HDFS-14118|https://issues.apache.org/jira/browse/HDFS-14118], clients
> can 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 (FQDN) 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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