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https://issues.apache.org/jira/browse/HDFS-2384?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon updated HDFS-2384:
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Attachment: breport.c
here's the simple C++ program I was using to benchmark the sort-by-inum
approach. to use this we'd have to shell out and read the results over stdout.
> Improve speed of block report generation
> ----------------------------------------
>
> Key: HDFS-2384
> URL: https://issues.apache.org/jira/browse/HDFS-2384
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: data-node
> Affects Versions: 0.20.206.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Attachments: breport.c
>
>
> This JIRA is to track a couple of potential improvements to the speed of
> block report generation while scanning the disks. In 0.20, the disks are
> scanned for every block report, though in trunk the block reports are
> generally built from memory.
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