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From "DENG FEI (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13949) Hadoop could provide IP instead of hostname to represent the node, which can reduce the DNS hostname resolution consumption
Date Thu, 05 Jan 2017 08:21:58 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13949?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15800724#comment-15800724
] 

DENG FEI commented on HADOOP-13949:
-----------------------------------

[~stevel@apache.org]  Thank you for your detailed answer,you are right.
Because met several DNS server failure , so we adopted the IP.
And replace Kerberos with little nested authentication  mechanism.

> Hadoop could provide IP instead of hostname to represent the node, which can reduce the
DNS hostname resolution consumption
> ---------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-13949
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13949
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: common
>            Reporter: DENG FEI
>
> Normally,Hadoop use hostname represent the node,such as datanode,nodemanager,will lookup
nameserver at rack resolve or create  rpc connnect .
> May be could provide a chance use ip walk around dns resolution.



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