Thanks, I'll do the procedure on my test env and update the community,
 if anybody already went through the process, I would lov to here about it

On Friday, April 22, 2011, Otis Gospodnetic <otis_gospodne...@yahoo.com> wrote:
> Regardless of what anyone here says, you need to try it.
> 3.1 should be able to read 1.4.1, yes.
> One the format is switched to 3.1, you can't go back and read it with 1.4.1.
> This is why you want to upgrade your Slaves first, then your Master (if you 
> have
> them -- I remember we spoke a while back and that wasn't the case back then).
>
> Otis
> ----
> Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch
> Lucene ecosystem search :: http://search-lucene.com/
>
>
>
> ----- Original Message ----
>> From: Ofer Fort <o...@tra.cx>
>> To: "solr-user@lucene.apache.org" <solr-user@lucene.apache.org>
>> Sent: Fri, April 22, 2011 1:00:05 PM
>> Subject: Re: Index upgrade from 1.4.1 to 3.1 and 4.0
>>
>> Thanks Otis, but this is not my case. Most of my fields are not stored
>> , but  I do have the original data in case I need to reindex.
>> My question is do I  need to?
>> If my 1.4.1 can be read by 3.1, I assume 3.1 can continue to write  to it?
>> In that case, I continue assuming that 4.0 will know how to read  only
>> the new segments, and if I optimize it, than I will have only one  new
>> segment, created by 3.1, thus readable by 4.0.
>> It makes sense to me,  the only question is if my guesses are right:-)
>> Thanks.
>>
>> On Friday,  April 22, 2011, Otis Gospodnetic <otis_gospodne...@yahoo.com>
>>wrote:
>> > Hi Ofer,
>> >
>> > We recently helped a customer go through  just such an upgrade (or maybe
> even
>> > from 1.3.*).  We used a tool that  read data from one index and indexed it 
>> > to
>>the
>> > new index without having  to reindex the data from the original sources.
>  All
>> > fields in the source  index were obviously stored. :)
>> >
>> > Otis
>> > ----
>> >  Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch
>> > Lucene ecosystem  search :: http://search-lucene.com/
>> >
>> >
>> >
>> > ----- Original  Message ----
>> >> From: Ofer Fort <o...@tra.cx>
>> >> To: "solr-user@lucene.apache.org"  <solr-user@lucene.apache.org>
>> >>  Sent: Fri, April 22, 2011 10:34:26 AM
>> >> Subject: Re: Index upgrade  from 1.4.1 to 3.1 and 4.0
>> >>
>> >> Nobody?
>> >> Am I the  only one in need of upgrading an index that was created with
>> 1.4.1?
>> >>
>> >> Thanks for any info
>> >>  Ofer
>> >>
>> >> On Friday, April 22, 2011, Ofer  Fort <o...@tra.cx>  wrote:
>> >> > Hi all,
>> >> >  While doing some tests, I  realized that an index that was created with
>> >> >  solr 1.4.1 is  readable by solr 3.1, but nt readable by solr 4.0.
>> >> > If I  plan  to migrate my index to 4.0, and I prefer not to reindex it
>> >> > all,   what would be my best course of action?
>> >> > Will it be possible to  continue  to write to the index with 3.1? Will
>> >> > that make it  readable from 4.0 or  only the newly created segments?
>> >> > If I  optimize it using 3.1, will that  make it readable also from 4.0?
>> >>  > Thanks
>> >> > Ofer
>> >> >
>> >>
>> >
>>
>

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