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Implementation of the metrics package that sends metric data to 
Ganglia.
Programmers should not normally need to use this package directly. Instead
they should use org.hadoop.metrics.


These are the implementation specific factory attributes 
(See ContextFactory.getFactory()):


    contextName.servers
    Space and/or comma separated sequence of servers to which UDP
    messages should be sent.
    
    contextName.period
    The period in seconds on which the metric data is sent to the
    server(s).
    
    contextName.units.recordName.metricName
    The units for the specified metric in the specified record.
    
    contextName.slope.recordName.metricName
    The slope for the specified metric in the specified record.
    
    contextName.tmax.recordName.metricName
    The tmax for the specified metric in the specified record.
    
    contextName.dmax.recordName.metricName
    The dmax for the specified metric in the specified record.