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From Michael McCandless <>
Subject Re: Distributed Indexes
Date Thu, 07 Feb 2008 20:59:29 GMT

If you're able to tell Windows FRS which specific files to copy, then  
SnapshotDeletionPolicy (in 2.3) should work for this.

It basically protects a consistent snapshot of your index, ensuring  
those files will not be deleted, while not blocking further updates  
to the index.


Ruslan Sivak wrote:

> I'm wondering if this is a problem that lucene users have already  
> tackled.  I have four copies of the application using a lucene  
> index.  They are located on two physical servers with two copies on  
> each server accessing two copies of the lucene index.  I use  
> Windows FRS (File Replication Service) to replicate the index  
> between the two servers.
> Things work well most of the time, but sometimes, I believe under  
> load, the index doesn't get a chance to propagate before another  
> write takes place and it gets corrupted.
> What would you recommend I use to keep the index in sync between  
> the four copies of the app?
> Russ
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