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From Rachid Bouacheria <willi...@gmail.com>
Subject Re: Upgrading solr 4.1.4 to solr 6.1.0
Date Wed, 13 Jul 2016 00:34:54 GMT
Thank you very much for your prompt response.
I really appreciate it!
Rachid
On Jul 12, 2016 17:13, "Shawn Heisey" <apache@elyograg.org> wrote:

> On 7/12/2016 5:54 PM, Rachid Bouacheria wrote:
> > I am running solr 4.10.4 and I would like to upgrade to the latest
> version
> > 6.1.0
> >
> > The documentation I found provides steps to upgrade from 4.10.4 to 5.x
> > And it seems like going from 4.x to 5.x is pretty consequent.
> > Going from 5.x to 6.1.0 seems to be less effort but still non negligible.
> >
> > I am wondering if anyone had to do a similar upgrade? If so how did you
> do
> > it? Upgrade to 5.x and then to 6, or straight from 4.x to 6?
> > Any tips or advice are welcome.
>
> The 6.1.0 version cannot read your 4.x indexes.  It can read 5.x and
> later indexes.
>
> If you can "upgrade" by setting up a new Solr install and reindexing
> everything, that will always achieve the best results.  This is how I do
> upgrades.  There's no need to worry about the old index format at all.
>
> If that's not possible, then you will need to convert your index to 5.x
> format before upgrading to 6.x.  You can do this by upgrading to a 5.x
> version first and optimizing all your indexes, or you can use the
> IndexUpgrader tool from Lucene, first from 5.x, and then from 6.x, to
> upgrade your index in stages.
>
> https://cwiki.apache.org/confluence/display/solr/IndexUpgrader+Tool
>
> Thanks,
> Shawn
>
>

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