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Date: Thu, 19 Nov 2009 18:29:40 +0000 (UTC)
From: "Allen Wittenauer (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
Subject: [jira] Commented: (MAPREDUCE-1222) [Mumak] We should not include
 nodes with numeric ips in cluster topology.
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    [ https://issues.apache.org/jira/browse/MAPREDUCE-1222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12780187#action_12780187 ] 

Allen Wittenauer commented on MAPREDUCE-1222:
---------------------------------------------

Rather than ignore, shouldn't you just normalized all of the nodes to be hostnames?  [The fact that hadoop uses IPs internally at all is a mistake IMO.]

> [Mumak] We should not include nodes with numeric ips in cluster topology.
> -------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1222
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1222
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: contrib/mumak
>    Affects Versions: 0.21.0, 0.22.0
>            Reporter: Hong Tang
>            Assignee: Hong Tang
>             Fix For: 0.21.0, 0.22.0
>
>         Attachments: mapreduce-1222-20091119.patch
>
>
> Rumen infers cluster topology by parsing input split locations from job history logs. Due to HDFS-778, a cluster node may appear both as a numeric ip or as a host name in job history logs. We should exclude nodes appeared as numeric ips in cluster toplogy when we run mumak until a solution is found so that numeric ips would never appear in input split locations.

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