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From Allen Wittenauer <awittena...@linkedin.com>
Subject Re: Namenode reboot - namespace
Date Thu, 14 Oct 2010 20:56:03 GMT

On Oct 14, 2010, at 12:58 PM, Null Ecksor wrote:
> Does the namenode starts a fresh and gather all the namespace information
> again from the datanodes?
> 
> I want to know if at all it looses the info written on the disk, is it able
> to obtain the same from the datanodes in the cluster.

I've added this to the FAQ:

http://wiki.apache.org/hadoop/FAQ#If_the_NameNode_loses_its_only_copy_of_the_fsimage_file.2C_can_the_file_system_be_recovered_from_the_DataNodes.3F
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