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From Dotan Cohen <>
Subject Re: Returning to Solr 4.0 from 4.1
Date Fri, 01 Mar 2013 09:50:22 GMT
On Fri, Mar 1, 2013 at 11:28 AM, Rafał Kuć <> wrote:
> Hello!
> I suppose the only way to make this work will be reindexing the data.
> Solr 4.1 uses Lucene 4.1 as you know, which introduced new default
> codec with stored fields compression and this is one of the reasons
> you can't read that index with 4.0.

Thank you. My first inclination is to "reindex" the documents, but the
only store of these documents is the Solr index itself. I am trying to
find solutions to create a new core and to index the data in the old
core into the new core. I'm not finding any good ways of going about

Note that we are talking about ~18,000,000 (yes, 18 million) small
documents similar to 'tweets' (mostly under 1 KiB each, very very few
over 5 KiB).

Dotan Cohen

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