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From "Cagdas Gerede (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3022) Fast Cluster Restart
Date Fri, 09 May 2008 17:06:55 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3022?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12595672#action_12595672
] 

Cagdas Gerede commented on HADOOP-3022:
---------------------------------------

How do you measure only processing time? Did you have to change the source code to add logging
lines for these measurements or did you use the code as it is? The datanode records the time
in log after it prepares and finishes sending the block report and the namenode reports after
it leaves the safemode. I am trying to get similar benchmarks. Could you please clarify how
you were able to only measure the processing time?


> 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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