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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "FAQ" by SomeOtherAccount
Date Thu, 14 Oct 2010 20:55:11 GMT
Dear Wiki user,

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

The "FAQ" page has been changed by SomeOtherAccount.
http://wiki.apache.org/hadoop/FAQ?action=diff&rev1=78&rev2=79

--------------------------------------------------

  
  The NameNode does not have any available DataNodes.  This can be caused by a wide variety
of reasons.  Check the DataNode logs, the NameNode logs, network connectivity, ...
  
+ == If the NameNode loses its only copy of the fsimage file, can the file system be recovered
from the DataNodes? ==
+ 
+ No.  This is why it is very important to configure dfs.name.dir to write to two filesystems
on different physical hosts, use the secondary NameNode, etc.
+ 
  = Platform Specific =
  == Windows ==
  

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