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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3620) Namenode should synchronously resolve a datanode's network location when the datanode registers
Date Tue, 24 Jun 2008 06:23:45 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12607487#action_12607487
] 

Owen O'Malley commented on HADOOP-3620:
---------------------------------------

I'm +1 to doing all of the resolution synchronously in both the namenode and jobtracker.

> Namenode should synchronously resolve a datanode's network location when the datanode
registers
> -----------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-3620
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3620
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: dfs
>    Affects Versions: 0.18.0
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>             Fix For: 0.19.0
>
>         Attachments: netResolution.patch
>
>
> Release 0.18.0 removes the rpc timeout. So the namenode is ok to resolve a datanode's
network location when the datanode registers. This could remove quite a lot of unnecessary
code in both datanode and namenode to handle asynchronous network location resolution and
avoid many potential bugs.

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