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From Danil ŢORIN <torin...@gmail.com>
Subject Re: Using Lucene 2.3 indices with Lucene 4.0
Date Tue, 20 Nov 2012 12:12:45 GMT
Ironically most of the changes are in unicode handling and standard
analyzer ;)

On Tue, Nov 20, 2012 at 12:31 PM, Ramprakash Ramamoorthy <
youngestachiever@gmail.com> wrote:

> On Tue, Nov 20, 2012 at 3:54 PM, Danil ŢORIN <torindan@gmail.com> wrote:
>
> > However behavior of some analyzers changed.
> >
> > So even after upgrade the old index is readable with 4.0, it doesn't mean
> > everything still works as before.
> >
>
> Thank you Torin, I am using the standard analyzer only and both the systems
> use Unicode 4.0 and I don't smell any problems here.
>
> >
> > On Tue, Nov 20, 2012 at 12:20 PM, Ian Lea <ian.lea@gmail.com> wrote:
> >
> > > You can upgrade the indexes with org.apache.lucene.index.IndexUpgrader.
> > >  You'll need to do it in steps, from 2.x to 3.x to 4.x, but should work
> > > fine as far as I know.
> > >
> > >
> > > --
> > > Ian.
> > >
> >
> Thank you Ian, this is giving me some head starts.
>
> > >
> > >
> > > On Tue, Nov 20, 2012 at 10:16 AM, Ramprakash Ramamoorthy <
> > > youngestachiever@gmail.com> wrote:
> > >
> > > > I understand lucene 2.x indexes are not compatible with the latest
> > > version
> > > > of lucene 4.0. However we have all our indexes indexed with lucene
> 2.3.
> > > >
> > > > Now that we are planning to migrate to Lucene 4.0, is there any work
> > > > around/hack I can do, so that I can still read the 2.3 indices? Or is
> > > > forgoing the older indices the only option?
> > > >
> > > > P.S : Am afraid, Re-indexing is not feasible.
> > > >
> > > > --
> > > > With Thanks and Regards,
> > > > Ramprakash Ramamoorthy,
> > > > Chennai,
> > > > India.
> > > >
> > >
> >
>
>
>
> --
> With Thanks and Regards,
> Ramprakash Ramamoorthy,
> Engineer Trainee,
> Zoho Corporation.
> +91 9626975420
>

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