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https://issues.apache.org/jira/browse/HADOOP-5670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12700209#action_12700209
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Tom White commented on HADOOP-5670:
-----------------------------------
ZK uses Java properties files, so it has no dependencies on Hadoop Core
configuration.
The bootstrapping problem is that FileSystem relies on a Configuration object
having loaded its resources. So to get a Configuration to load from a
FileSystem won't work, the way things stand (see Configuration#loadResource).
(It's possible that the reason for this code has gone away, or at least
lessened, following the recent split of configurations into core, hdfs and
mapred - it might be possible to bootstrap from the core config.) There's no
inherent reason, though, why a Configuration couldn't load its resources from
HDFS or a ZK-backed FileSystem. We just need to avoid a system loading
resources from itself.
> Hadoop configurations should be read from a distributed system
> --------------------------------------------------------------
>
> Key: HADOOP-5670
> URL: https://issues.apache.org/jira/browse/HADOOP-5670
> Project: Hadoop Core
> 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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