Please explain FSNamesystemState TotalLoad

[Nick Niemeyer]

Can someone please explain what TotalLoad represents below?  Thanks for your 
response in advance!

Version: hadoop-0.20-namenode-0.20.2+923.197-1

Example pulled from the output of via the name node:
  # curl -i http://localhost:50070/jmx

{
    "name" : "hadoop:service=NameNode,name=FSNamesystemState",
    "modelerType" : "org.apache.hadoop.hdfs.server.namenode.FSNamesystem",
    "CapacityTotal" : #,
    "CapacityUsed" : #,
    "CapacityRemaining" : #,
    "TotalLoad" : #,
    "BlocksTotal" : #,
    "FilesTotal" : #,
    "PendingReplicationBlocks" : 0,
    "UnderReplicatedBlocks" : 0,
    "ScheduledReplicationBlocks" : 0,
    "FSState" : "Operational"
  }


Thanks,
Nick