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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Trivial Update of "HowToSetupYourDevelopmentEnvironment" by AlexLoddengaard
Date Wed, 27 Aug 2008 09:17:57 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 AlexLoddengaard:
http://wiki.apache.org/hadoop/HowToSetupYourDevelopmentEnvironment

------------------------------------------------------------------------------
  
  == ERROR dfs.NameNode: java.io.IOException: javax.security.auth.login.LoginException: Login
failed: id: cannot find name for group ID ==
  
- Solution pending.
+ This was a specific error that I received that probably no one else will receive.  The error
has to do with a permission issue when running Hadoop.  At runtime, Hadoop SSHes into all
nodes, including itself in a single-node setup.  This error occurred because some LDAP groups
that I belonged to were not found at Hadoop runtime.  If you get an error like this, then
there can be a number of things wrong, but very generally you have a permissions error.  The
following guide may  help if you're running Ubuntu: http://wiki.apache.org/hadoop/Running_Hadoop_On_Ubuntu_Linux_%28Single-Node_Cluster%29
  

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