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From "Eyal Post" <eyalp...@epocalipse.com>
Subject RE: .NET 2.0 with Lucene.NET
Date Wed, 26 Apr 2006 15:40:17 GMT
Been using .net 2.0 with lucene.net for a long time now. I'm now using
Lucene.net 1.9 and I don't remember *any* issues when moving to 2.0.

Regards,
Eyal Post
 

> -----Original Message-----
> From: Jeff Rodenburg [mailto:jeff.rodenburg@gmail.com] 
> Sent: Wednesday, April 26, 2006 18:19 PM
> To: lucene-net-dev@incubator.apache.org
> Subject: Re: .NET 2.0 with Lucene.NET
> 
> We initially started running v1.4.3 with the 1.1 framework 
> and have since migrated over to the 2.0 framework without 
> difficulty.  There are some differences down in the guts, but 
> nothing that can't be handled in conversion.
> 
> Our index environment sounds very similar to yours - highly 
> structured and relatively high volatility.  In addition, we 
> have quick turnaround on reflected changes from the original 
> datasource (db) being reflected in the search index.
> 
> I would suggest initially focusing your time with 
> understanding how the file formats (compound vs. 
> non-compound) and parameters like mergefactor and 
> maxmergedocs affect your specific index creation and 
> production.  You may have already done this, but I found that 
> efficiency levels changed with structural index changes, i.e. 
> decisions about field population and settings.
> 
> Depending on your available system resources, I've also 
> noticed considerable performance degradation when an index 
> passes a certain size threshold, i.e.
> 300MB on the given system I'm working with.  (We break our 
> aggregate index out to multiple individual indexes for the 
> best mix of indexing and search
> performance.)
> 
> Hope this helps.
> 
> -- jeff r.
> 
> 
> On 4/26/06, Rob Tucker <robt@i2.co.uk> wrote:
> >
> > Thanks for the quick response George,
> >
> >
> >
> > I was assuming that 1.4 was .NET 1.1 compliant, is this not 
> the case?
> > Generally, I've struggled to find information about 
> Lucene.NET support 
> > for .NET.  Is there somewhere where I can find it?
> >
> >
> >
> > We're using Lucene.NET for a slightly unusual searching 
> implementation 
> > where it's holding information about highly structured 
> documents in an 
> > environment where there is the potential for a fairly high 
> degree of 
> > volatility in document contents and lifetimes.  The main 
> issues we've 
> > found with regard to efficiency is in adding and removing 
> large number 
> > of documents can take a long time, merging and optimising 
> the index is 
> > the particular challenge.  I've really got a general concern that 
> > switching to .NET2.0 might affect this efficiency and 
> robustness for 
> > any number of reasons, say in changing the implementation of data 
> > structures, file access classes or plain bugs in the 
> framework!  From 
> > experience, I don't tend to believe the MS marketing hype, 
> I've always 
> > hit upgrade problems when change OS version, runtimes etc, I don't 
> > expect .NET 2.0 to be any different.
> >
> >
> >
> > In general, we've got great results with Lucene.NET, I'm really 
> > looking for an initial feel for what to expect with the 
> move to 2.0.  
> > Is there information anywhere about the required changes 
> that you've mentioned?
> >
> >
> >
> > To be honest, I've struggled to find much information about 
> Lucene.NET 
> > on the ASF site, is this the main page?:
> > http://incubator.apache.org/projects/lucene.net.html If so, 
> the WIKI 
> > seems to be down.
> >
> >
> >
> > Thanks,
> >
> >
> >
> > Rob Tucker.
> >
> >
> >
> >   _____
> >
> > From: George Aroush [mailto:george@aroush.net]
> > Sent: 26 April 2006 13:42
> > To: Rob Tucker
> > Subject: RE: .NET 2.0 with Lucene.NET
> >
> >
> >
> > Hi Rob,
> >
> >
> >
> > With few changes, you can get Lucene.Net to run on .NET 2.0 
> -- others 
> > have done it.  as you may know, I am finishing off 1.9 
> which will be 
> > .NET 1.1 compliant.  After which, I will be releasing 
> Lucene.Net 2.0 
> > which will be .NET 2.0 compliant.
> >
> >
> >
> > Sorry, I don't have numbers to show you if Lucene.Net is faster or 
> > more stable under .NET 2.0.  But I am curious, what are 
> your concerns 
> > of Lucene.Net 1.4.3 in regards to robustness and efficiency?
> >
> >
> >
> > Regards,
> >
> >
> >
> > -- George
> >
> >
> >
> > PS: Please subscribe to Lucene.Net mailing list at ASF and post 
> > questions like those there for the whole community to pitch in on.
> >
> >
> >
> >   _____
> >
> > From: Rob Tucker [mailto:robt@i2.co.uk]
> > Sent: Wednesday, April 26, 2006 6:32 AM
> > To: George Aroush
> > Subject: .NET 2.0 with Lucene.NET
> >
> > Hi,
> >
> >
> >
> > Do you have any information about how Lucene.Net runs with 
> .NET2.0?  
> > We have a .NET 1.1 project that we'd like to upgrade and 
> would like to 
> > get some initial confidence about how Lucene.NET will run.  We're 
> > using 1.4 at the moment.  I'm concerned with both 
> robustness and efficiency.
> >
> >
> >
> > Regards,
> >
> >
> >
> > Rob Tucker
> >
> >
> >
> > RobT@i2.co.uk
> >
> >
> >
> 


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