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https://issues.apache.org/jira/browse/HADOOP-2564?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12557450#action_12557450
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dhruba borthakur commented on HADOOP-2564:
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I think this is not a duplicate. HADOOP-2447 reports the current numbers in the
webUI. However, this JIRA requests that these numbers be reported through the
metrics API. Then a Metrics collection agent could record the growth of files
and blocks over time.
> NameNode to blat total number of files and blocks
> -------------------------------------------------
>
> Key: HADOOP-2564
> URL: https://issues.apache.org/jira/browse/HADOOP-2564
> Project: Hadoop
> Issue Type: Improvement
> Reporter: Marco Nicosia
> Priority: Minor
> Fix For: 0.17.0
>
>
> Right now, the namenode reports lots of rates (block read per sec, removed
> per sec, etc etc) but it doesn't actually report how many files and blocks
> total exist in the system. It'd be great if we could have this, so that our
> reporting systems can show the growth trends over time.
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