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From "Alex Newman (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5670) Hadoop configurations should be read from a distributed system
Date Tue, 06 Apr 2010 18:23:36 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12854105#action_12854105

Alex Newman commented on HADOOP-5670:

Allen, A more concrete proposal would be great, I am just trying to understand which part
of the problem we are trying to solve. It's good to see people putting some real elbow great
in making hadoop more palatable to ops/system as they are a very important stakeholder. I
do think that requiring sysadmins to understand the details of zk, just to do configuration
stuff would be kindof a show stopper for acceptance. Also having cluster and host wide information
in ldap definitely seems like a win in the portability department. The only real worry is
that we end up increasing the deployment complexity or develope things in such a way that
people have to deploy an array of ldap servers within each cluster. Considering I have never
worked at any large enterprise  which uses directory services besides notes or active directory,
I think that this could seriously be a burden if we do it wrong.

> Hadoop configurations should be read from a distributed system
> --------------------------------------------------------------
>                 Key: HADOOP-5670
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5670
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: conf
>            Reporter: Allen Wittenauer
> Rather than distributing the hadoop configuration files to every data node, compute node,
etc, Hadoop should be able to read configuration information (dynamically!) from LDAP, ZooKeeper,

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