Simply using NAS as just another file directory will cause these
locks. You need to use your own logic to control when to re-open the
index reader.

I think you can look into Nutch's distributed file system to see
whether that can help.
--
Chris Lu
-------------------------
Instant Full-Text Search On Any Database/Application
site: http://www.dbsight.net
demo: http://search.dbsight.com

On 12/27/06, Biggy <[EMAIL PROTECTED]> wrote:

Well try having say 30 servers try to write in the index at the same time and
10 others
to read. You'll get enough locks to make a grown man cry. :)


Scott Sellman wrote:
>
> Sorry if this seems naïve (I am new to Lucene), but why not keep one copy
> of the Lucene index on a NAS and have it shared by all servers?
>
> -----Original Message-----
> From: Biggy [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, December 27, 2006 7:57 AM
> To: java-user@lucene.apache.org
> Subject: Clustering Lucene with 40 Servers
>
>
> I'm currently investigating the best ways of clustering Lucene.
> I've heard of both Solr, Terracotta but do not know how well they scale.
> Their examples talk of a 4 node cluster. This is way too small for my
> needs.
>
> I have 30x JVMs each handling 3 requests/sec and each having their own
> Lucene index. The index changes are propagated to the cluster members
> using
> JGroups messages. This solution has more than reached its limit as JGroups
> has become unstable and a source of many JVMs crashes. Based on current
> traffic trends I anticipate needing to upgrade to 40x + JVMS very soon.
>
> Can anybody suggest a way to effectivily cluster / replicate document
> changes ?
>
> P.S.:
> JMS is not a possible solution as this was the prior JGroups solution. We
> had too many memory problems/queue full etc crashing the servers
> thereafter.
>
> --
> View this message in context:
> 
http://www.nabble.com/Clustering-Lucene-with-40-Servers-tf2886546.html#a8064135
> Sent from the Lucene - Java Users mailing list archive at Nabble.com.
>
>
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--
View this message in context: 
http://www.nabble.com/Clustering-Lucene-with-40-Servers-tf2886546.html#a8065033
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