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https://issues.apache.org/jira/browse/HADOOP-10430?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13973058#comment-13973058
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Owen O'Malley commented on HADOOP-10430:
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The cost of method calls is measured in nanoseconds. :) So the loop is
basically free unless you have millions of keys.
I do *not* think you should use this API as your on the wire protocol. The wire
protocol *should* have a windowed accessor.
> KeyProvider Metadata should have an optional description, there should be a
> method to retrieve the metadata from all keys
> -------------------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-10430
> URL: https://issues.apache.org/jira/browse/HADOOP-10430
> Project: Hadoop Common
> Issue Type: Improvement
> Components: security
> Affects Versions: 3.0.0
> Reporter: Alejandro Abdelnur
> Assignee: Alejandro Abdelnur
> Fix For: 3.0.0
>
> Attachments: HADOOP-10430.patch, HADOOP-10430.patch,
> HADOOP-10430.patch, HADOOP-10430.patch
>
>
> Being able to attach an optional description (and show it when displaying
> metadata) will enable giving some context on the keys.
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