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https://issues.apache.org/jira/browse/HADOOP-2816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12640626#action_12640626
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Suresh Srinivas commented on HADOOP-2816:
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Ignore the previous comment. It was intended for another issue.
> Cluster summary at name node web has confusing report for space utilization
> ---------------------------------------------------------------------------
>
> Key: HADOOP-2816
> URL: https://issues.apache.org/jira/browse/HADOOP-2816
> Project: Hadoop Core
> Issue Type: Improvement
> Components: dfs
> Reporter: Robert Chansler
> Assignee: Suresh Srinivas
> Fix For: 0.19.0
>
> Attachments: HADOOP-2816.patch, HADOOP-2816.patch, HADOOP-2816.patch
>
>
> In one example:
> Cluster Summary
> Capacity : 1.15 PB
> DFS Remaining : 192 TB
> DFS Used : 717 TB
> DFS Used% : 62 %
> Why is Capacity not equal Used plus Remaining?
> (The answer is that there is an estimated reserve for local files.)
> The presentation should be easily understood by the user.
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