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From "Edward Capriolo (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5670) Hadoop configurations should be read from a distributed system
Date Wed, 12 May 2010 14:26:58 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12866582#action_12866582
] 

Edward Capriolo commented on HADOOP-5670:
-----------------------------------------

Jeff the implementation I want to go for was described above:

I suppose if all we wish is to replace basically the -D options passed into hadoop, then I
am very openminded to a ldap based scheme as a plugin. I would be very happy if it included
some scoping so that configuration could be provided on a intra cluster, inter cluster, host
,user or job level. Guidelines should be provided as how not to disrupt existing ldap users.

And meet this requirement:

I think we don't need to debate hard on ldap versus zookeeper versus etc on this specific
issue. I assume that we would have the abstraction here so that folks can try out different
systems - ldap, zookeeper etc. and can configure one as per their environment needs.

Also I wanted to add that since the new hadoop security is kerberos. Kerberos is normally
backended by LDAP, so a good point of users will have an ldap server at their disposal.

> 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,
whatever.

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