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From "Stu Hood (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-1634) EC2 launch-hadoop-cluster awk Problem
Date Thu, 19 Jul 2007 21:25:06 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-1634?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Stu Hood updated HADOOP-1634:
-----------------------------

    Attachment: hadoop-1634.patch

A patch to fix this issue. The awk line checks the 7th and 8th column (for backwards compatibility).

> EC2 launch-hadoop-cluster awk Problem
> -------------------------------------
>
>                 Key: HADOOP-1634
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1634
>             Project: Hadoop
>          Issue Type: Bug
>          Components: contrib/ec2
>    Affects Versions: 0.13.0
>         Environment: ec2-api-tools-1.2-11797
>            Reporter: Stu Hood
>            Priority: Minor
>             Fix For: 0.13.1, 0.14.0, 0.15.0
>
>         Attachments: hadoop-1634.patch
>
>
> With Amazon 'ec2-api-tools-1.2-11797' and Hadoop 0.13.0 the output from ec2-describe-instances
is being incorrectly AWK'd on the last few lines of the launch-hadoop-cluster script.
> Specifically, on the
> """
> MASTER_EC2_HOST=`ec2-describe-instances | grep INSTANCE | grep running | awk '{if ($7
== 0) print $4}'`
> """
> line, it should be comparing column $8 rather than column $7.
> When this command fails, the hostname of the master doesn't get set correctly and the
IP lookup finds incorrect results. The last lines of output from the script look something
like this:
> """
> Appointing master
> Master is . Please set up DNS so blah.gotdns.org points to D.ROOT-SERVERS.NET.
> I.ROOT-SERVERS.NET.
> F.ROOT-SERVERS.NET.
> M.ROOT-SERVERS.NET.
> J.ROOT-SERVERS.NET.
> C.ROOT-SERVERS.NET.
> H.ROOT-SERVERS.NET.
> E.ROOT-SERVERS.NET.
> A.ROOT-SERVERS.NET.
> K.ROOT-SERVERS.NET.
> G.ROOT-SERVERS.NET.
> B.ROOT-SERVERS.NET.
> L.ROOT-SERVERS.NET..
> Press return to continue.
> """

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