[jira] Updated: (HADOOP-3620) Namenode should synchronously resolve a datanode's network location when the datanode registers

["Hairong Kuang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-3620?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hairong Kuang updated HADOOP-3620:
----------------------------------

      Resolution: Fixed
    Release Note: This patch makes the namenode to synchronously resolve a datanode's network location when the datanode registers. In addition, it allows and recommends an include host file to contain IP addresses.
    Hadoop Flags: [Reviewed]
          Status: Resolved  (was: Patch Available)

> 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, netResolution1.patch, netResolution2.patch, netResolution3.patch, netResolution4.patch, netResolution5.patch, netResolution6.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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