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From "Hemanth Yamijala (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-2266) Provide a command line option to check if a Hadoop jobtracker is idle
Date Fri, 23 Nov 2007 05:06:43 GMT
Provide a command line option to check if a Hadoop jobtracker is idle
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                 Key: HADOOP-2266
                 URL: https://issues.apache.org/jira/browse/HADOOP-2266
             Project: Hadoop
          Issue Type: New Feature
          Components: mapred
            Reporter: Hemanth Yamijala


This is an RFE for providing a way to determine from the hadoop command line whether a jobtracker
is idle. One possibility is to have something like hadoop jobtracker -idle <time>. Hadoop
would return true (maybe via some stdout output) if the jobtracker had no work to do (jobs
running / prepared) since <time> seconds, false otherwise.

This would be useful for management / provisioning systems like Hadoop-On-Demand [HADOOP-1301],
which can then deallocate the idle, provisioned clusters automatically, and release resources.

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