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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "FAQ" by AaronKimball
Date Sat, 13 Dec 2008 00:08:41 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Hadoop Wiki" for change notification.

The following page has been changed by AaronKimball:
http://wiki.apache.org/hadoop/FAQ

------------------------------------------------------------------------------
  $ bin/hadoop-daemon.sh start tasktracker
  }}}
  
+ [[BR]]
+ [[Anchor(26)]]
+ '''26. [#26 Is there an easy way to see the status and health of my cluster?]'''
+ 
+ There are web-based interfaces to both the JobTracker (MapReduce master) and NameNode (HDFS
master) which display status pages about the state of the entire system. By default, these
are located at http://job.tracker.addr:50030/ and http://name.node.addr:50070/.
+ 
+ The JobTracker status page will display the state of all nodes, as well as the job queue
and status about all currently running jobs and tasks. The NameNode status page will display
the state of all nodes and the amount of free space, and provides the ability to browse the
DFS via the web. 
+ 
+ You can also see some basic HDFS cluster health data by running:
+ {{{
+ $ bin/hadoop dfsadmin -report
+ }}}
+ 

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