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https://issues.apache.org/jira/browse/HADOOP-3022?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12595718#action_12595718
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Konstantin Shvachko commented on HADOOP-3022:
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Note. I updated the numbers in the tables above. Due to a calculation error the
number for load edits was too high.
> How do you measure only processing time?
Yes I modified code and add logging lines printing processing times. It is in
the patches linked to this issue.
For measuring block report processing I use modified NNThroughputBenchmark.
Therefore, it is an estimate not the real cluster processing time, but it is
sort of an upper bound for how fast the name-node can process those reports.
> Fast Cluster Restart
> --------------------
>
> Key: HADOOP-3022
> URL: https://issues.apache.org/jira/browse/HADOOP-3022
> Project: Hadoop Core
> Issue Type: New Feature
> Components: dfs
> Reporter: Robert Chansler
> Assignee: Konstantin Shvachko
> Fix For: 0.18.0
>
>
> This item introduces a discussion of how to reduce the time necessary to
> start a large cluster from tens of minutes to a handful of minutes.
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