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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "FAQ" by AaronKimball
Date Wed, 10 Dec 2008 03:31:48 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

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  will see that the lease for the file is already granted to another client,
  and will reject the open request for the second client.
  
+ [[BR]]
+ [[Anchor(25)]]
+ '''25. [#25 I have a new node I want to add to a running Hadoop cluster; how do I start
services on just one node?]'''
+ 
+ This also applies to the case where a machine has crashed and rebooted, etc, and you need
to get it to rejoin the cluster. You do not need to shutdown and/or restart the entire cluster
in this case. 
+ 
+ First, add the new node's DNS name to the conf/slaves file on the master node.
+ 
+ Then log in to the new slave node and execute:
+ 
+ {{{
+ $ cd path/to/hadoop
+ $ bin/hadoop-daemon.sh start datanode
+ $ bin/hadoop-daemon.sh start tasktracker
+ }}}
+ 

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