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https://issues.apache.org/jira/browse/HADOOP-5743?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12702495#action_12702495
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Shevek commented on HADOOP-5743:
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Doug, is the configuration serialization format allowed to change (to allow
on-wire preservation of hierarchy metadata, and thus runtime semantics of
resources/null-override-safety/etc), or would that be a disallowed
incompatibility?
> Configuration: Hierachical; documented; null-safe; thread-safe
> --------------------------------------------------------------
>
> Key: HADOOP-5743
> URL: https://issues.apache.org/jira/browse/HADOOP-5743
> Project: Hadoop Core
> Issue Type: Improvement
> Components: conf
> Reporter: Shevek
> Attachments: 01_configuration.patch
>
>
> Patch to configuration to:
> * Update documentation to match code
> * Make configurations hierarchical
> * Remove global REGISTRY of configurations
> * Adding global default does not reload child configurations
> * (Eventually) make properly thread-safe
> * Allow well-behaved overriding with nulls
> * Allow future satisfaction of ticket 5708 (with which I agree, but Doug does
> not).
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