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Posted to common-issues@hadoop.apache.org by "Patrick Angeles (Commented) (JIRA)" <ji...@apache.org> on 2012/03/22 01:31:26 UTC
[jira] [Commented] (HADOOP-7030) new topology mapping
implementations
[ https://issues.apache.org/jira/browse/HADOOP-7030?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13235253#comment-13235253 ]
Patrick Angeles commented on HADOOP-7030:
-----------------------------------------
+1 on the patch.
Thanks for picking this one up, Tom!
> new topology mapping implementations
> ------------------------------------
>
> 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, 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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