Event Modeling and Recognition using Markov Logic Networks ?
Hadoop has a master-slave architecture (Figure 2),
with a unique master host and multiple slave hosts, typ-
ically configured as follows. The master host runs two
daemons: (1) the JobTracker, which schedules and man-
ages all of the tasks belonging to a running job; and (2)
the NameNode, which manages the HDFS namespace,
and regulates access to files by clients (which are typi-
cally the executing tasks).
Each slave host runs two daemons: (1) the Task-
Tracker, which launches tasks on its host, based on in-
structions from the JobTracker; the TaskTracker also
keeps track of the progress of each task on its host; and
(2) the DataNode, which serves data blocks...
