Class org.apache.hadoop.mapred.ClusterStatus

Added Methods
Collection getActiveTrackerNames()	Get the names of task trackers in the cluster.
Collection getBlacklistedTrackerNames()	Get the names of task trackers in the cluster.
int getBlacklistedTrackers()	Get the number of blacklisted task trackers in the cluster.
long getMaxMemory()	Get the maximum configured heap memory that can be used by the JobTracker
long getTTExpiryInterval()	Get the tasktracker expiry interval for the cluster
long getUsedMemory()	Get the total heap memory used by the JobTracker