public class HerdLoadSensor
The HerdLoadSensor is a load sensor that reports the local HDFS blocks
and the name of the rack. The rack name is reported twice: once as
hdfs_primary_rack and once as hdfs_secondary_rack. This double
reported is needed by the HerdJsv. The blocks are reported as 256
aggregate block resources named hdfs_blk*, where the * represents the
first two hex digits of the block's id. Multiple blocks that share the
same first two hex id digits are reported via a single block resource.
Block resources for which no block is locally present are not reported.
Fields inherited from interface com.sun.grid.loadsensor.LoadSensor