[jira] [Updated] (HADOOP-7030) Add TableMapping topology implementation to read host to rack mapping from a file

["Tom White (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-7030?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tom White updated HADOOP-7030:
------------------------------

    Target Version/s: 1.1.0, 0.23.3  (was: 0.23.3, 1.1.0)
             Summary: Add TableMapping topology implementation to read host to rack mapping from a file  (was: new topology mapping implementations)
    
> Add TableMapping topology implementation to read host to rack mapping from a file
> ---------------------------------------------------------------------------------
>
>                 Key: HADOOP-7030
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7030
>             Project: Hadoop Common
>          Issue Type: New Feature
>    Affects Versions: 0.20.1, 0.20.2, 0.21.0
>            Reporter: Patrick Angeles
>            Assignee: Tom White
>         Attachments: HADOOP-7030-2.patch, HADOOP-7030.patch, HADOOP-7030.patch, HADOOP-7030.patch, HADOOP-7030.patch, topology.patch
>
>
> The default ScriptBasedMapping implementation of DNSToSwitchMapping for determining cluster topology has some drawbacks. Principally, it forks to an OS-specific script.
> This issue proposes two new Java implementations of DNSToSwitchMapping. TableMapping reads a two column text file that maps an IP or hostname to a rack ID. Ip4RangeMapping reads a three column text file where each line represents a start and end IP range plus a rack ID.

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