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From Apache Wiki <wikidi...@apache.org>
Subject [Lucene-hadoop Wiki] Update of "FAQ" by KonstantinShvachko
Date Wed, 07 Nov 2007 02:43:00 GMT
Dear Wiki user,

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

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

------------------------------------------------------------------------------
  The name-node directories are used for the name space data replication so that the image
and the 
  log could be restored from the remaining volumes if one of them fails. 
  
+ 
+ [[BR]]
+ [[Anchor(16)]]
+ '''16. [#16 HDFS. What happens if one Hadoop client renames a file or a directory containing
this file while another client is still writing into it?]'''
+ 
+ Starting with release hadoop-0.15, a file will appear in the name space as soon as it is
created. 
+ If a writer is writing to a file and another client renames either the file itself or any
of its path 
+ components, then the original writer will get an IOException either when it finishes writing
to the current 
+ block or when it closes the file.
+ 

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