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From "Matei Zaharia (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6392) Run namenode and jobtracker on separate EC2 instances
Date Wed, 25 Nov 2009 21:02:39 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12782619#action_12782619
] 

Matei Zaharia commented on HADOOP-6392:
---------------------------------------

Just curious, what's the reasoning for this? I would imagine that the NN communicates with
the JT a lot and thus it helps to colocate them. Another useful option might be to allow the
user to ask for a bigger instance type for the "master" node (if the script doesn't currently
allow this).

> Run namenode and jobtracker on separate EC2 instances
> -----------------------------------------------------
>
>                 Key: HADOOP-6392
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6392
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: contrib/ec2
>            Reporter: Tom White
>            Assignee: Tom White
>
> Replace concept of "master" with that of "namenode" and "jobtracker". Still need to be
able to run both on one node, of course.

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