Re: Crawling and indexing hardware

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On Fri, 9 May 2008, Daniel Maher wrote:

Do you plan to do any AFR (automatic file replication) ?  If so,
consider that even a one-byte change to your "big index files" will
cause the /entire/ file to be AFR'd between all participating
nodes.

Marcus, what do you mean by this?

You've mis-attributed the quote, Krishna.  What i meant was exactly
what i said : if you have a 5GB file on an AFR cluster, and a client
makes a one-byte change to that file, then the entire 5GB file is
re-copied to all members of the AFR cluster.

At least, that's my understanding of the situation - please correct me
if i'm wrong. :)

In a word - no. If the nodes are connected, then only the actual 1 byte change will be replicated. If the nodes are disconnected, then the "self heal" will copy the entire 5GB file when the nodes connect.

Gordan




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