Reg. recommended Solr 6.x version to use in prod

[Hari Baskar <co...@yahoo.com.INVALID>]

Hi, 
  We are currently running Solr 5.1 in production. We do not use SolrCloud now . We plan to move to 6.x and use SolrCloud. Any specific recommendations on the recommended Solr 6.x version to use in prod. We are open to reindex all the collections during this migration. Outr major use is full text search. We use data import handler with SQLEntityProcessor and Apache tika to index documents.
-Hari

Re: Reg. recommended Solr 6.x version to use in prod

[Erick Erickson <er...@gmail.com>]

I'd go with 6.6.

Technically you do not have to re-index, although if you can it's
preferable. Solr (well, mostly Lucene) will allow reading "one major
version back", so any 6x Solr should work fine with a 5x index. As the
segments get merged, they'll be brought up to the 6x format. There's
also the Lucene IndexUpgrader process that can be run to upgrade your
index.

If you're doing bulk indexing, you may want to consider indexing from
a SolrJ client, see:
https://lucidworks.com/2012/02/14/indexing-with-solrj/

Best,
Erick

On Mon, Aug 7, 2017 at 8:20 AM, Hari Baskar
<co...@yahoo.com.invalid> wrote:
> Hi,
>   We are currently running Solr 5.1 in production. We do not use SolrCloud now . We plan to move to 6.x and use SolrCloud. Any specific recommendations on the recommended Solr 6.x version to use in prod. We are open to reindex all the collections during this migration. Outr major use is full text search. We use data import handler with SQLEntityProcessor and Apache tika to index documents.
> -Hari