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https://issues.apache.org/jira/browse/HADOOP-5670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12854046#action_12854046
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Alex Newman commented on HADOOP-5670:
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So I think their exists a couple of different conversations going on here. 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.
However their exists numerous other things which fall into the cluster
configuration in which ldap may not be the best choice.
In regards to operations, I think deployment complexity is an argument against
ldap. Even if an organization were willing to store such configuration in their
existing ldap infrastructure, which I am skeptical of in many cases, it would
require organizations not using ldap to run additional infrastructure to solve
a problem which could be solved by something already provided by the hadoop
infrastructure. I would feel as though if we saw many users deploying a
isolated ldap installation just for hadoop that we would have made people's
life harder not easier.
Allen, sorry to be a pain , but could you be a bit more pedantic about what
you mean by configurations ? Do you think a hybrid system may make sense here?
> 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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