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Posted to common-commits@hadoop.apache.org by Apache Wiki <wi...@apache.org> on 2008/05/09 18:04:29 UTC

[Hadoop Wiki] Update of "FAQ" by OtisGospodnetic

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

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  On a large cluster removing one or two data-nodes will not lead to any data loss, because 
  name-node will replicate their blocks as long as it will detect that the nodes are dead.
- With a large number of nodes probability of loosing data is high.
+ With a large number of nodes getting removed or dying the probability of loosing data is higher.
  
  Hadoop offers the ''decommission'' feature to retire a set of existing data-nodes.
  The nodes to be retired should be included into the ''exclude file'', and the exclude file name should