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https://issues.apache.org/jira/browse/HDFS-14327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16809398#comment-16809398
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Fengnan Li commented on HDFS-14327:
-----------------------------------
Thanks for the commit [~elgoiri]
for the hudson error:
[ERROR] Failed to execute goal
org.apache.hadoop:hadoop-maven-plugins:3.3.0-SNAPSHOT:protoc (compile-protoc)
on project hadoop-common: org.apache.maven.plugin.MojoExecutionException:
protoc version is 'libprotoc 2.6.1', expected version is '2.5.0' -> [Help 1]
[ERROR]
Do I need to do something about it?
> 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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