[HADOOP-1518] Add session id to metric data

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.14.0
• Assignee: David Bowen
• Reporter: David Bowen
• Created: 21/Jun/07 20:01
• Updated: 20/Aug/07 18:12
• Resolved: 22/Jun/07 19:09

Description

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.