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From "David Bowen (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-1518) Add session id to metric data
Date Thu, 21 Jun 2007 20:02:26 GMT
Add session id to metric data
-----------------------------

                 Key: HADOOP-1518
                 URL: https://issues.apache.org/jira/browse/HADOOP-1518
             Project: Hadoop
          Issue Type: Improvement
            Reporter: David Bowen
            Assignee: David Bowen



In the context of Hadoop-On-Demand (HOD), we want to be able to aggregate metrics across the
machines in the virtual cluster that corresponds to a HOD session. To enable this, we'd like
to tag all the map/reduce related metrics with a session id.  The session id would be a string
created by HOD (it might be a Torque job id) and put into the hadoop-site.xml file for the
virtual cluster.

The default value for the session id would be the empty string, so that non-HOD usage of the
metrics is not affected accept for the addition of a tag which is always the empty string.





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