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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,

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The following page has been changed by AaronKimball:

  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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