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https://issues.apache.org/jira/browse/HADOOP-6317?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12767441#action_12767441
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Arun C Murthy commented on HADOOP-6317:
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Aaron - Thinking a bit more about this... one important feature is the ability
for the TaskTracker to 'mark' configs as final programmatically. For e.g. the
localized configs should be marked final. Does that make sense? Apologies for
missing this in the original proposal...
> Serialize the 'final'ness of Configuration keys
> -----------------------------------------------
>
> Key: HADOOP-6317
> URL: https://issues.apache.org/jira/browse/HADOOP-6317
> Project: Hadoop Common
> Issue Type: Improvement
> Components: conf
> Reporter: Arun C Murthy
> Assignee: Aaron Kimball
> Fix For: 0.22.0
>
> Attachments: HADOOP-6317.patch
>
>
> Currently Configuration.writeXml doesn't serialize the 'final' attribute.
> There are some scenarios where it is useful:
> # TaskTracker should mark the tasks' 'localized' parameters as 'final'
> # GUI tools
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