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https://issues.apache.org/jira/browse/HADOOP-7510?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13105733#comment-13105733
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Jitendra Nath Pandey commented on HADOOP-7510:
----------------------------------------------

It would be good to put on the jira the reasons behind some of the design 
choices in NetUtils.java
1) The usage of ResolverConfiguration.
2) The different handling of hosts with a dot in the end and those containing 
dot in the middle.

HftpFileSystem.java: Why was getCanonicalServiceName removed?

DFSClient.java:
  The change of createRPCNamenode call to createNamenode changes retry policy 
and exception policy. This change is not required.

DistributedFileSystem.java:
  The patch will change a bit with latest commit in HADOOP-7625, the service is 
not being set in DFS anymore.

JobClient.java:
  What is the need to change from proxy to JobClient?







> Tokens should use original hostname provided instead of ip
> ----------------------------------------------------------
>
>                 Key: HADOOP-7510
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7510
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>             Fix For: 0.20.205.0
>
>         Attachments: HADOOP-7510-2.patch, HADOOP-7510-3.patch, 
> HADOOP-7510-4.patch, HADOOP-7510-5.patch, HADOOP-7510-6.patch, 
> HADOOP-7510.patch
>
>
> Tokens currently store the ip:port of the remote server.  This precludes 
> tokens from being used after a host's ip is changed.  Tokens should store the 
> hostname used to make the RPC connection.  This will enable new processes to 
> use their existing tokens.

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