On 1/2/2013 11:34 AM, Benjamin, Roy wrote:
Thanks all,
You should not use a a 3.6 SolrJ client with Solr 4 server.
I run 100 shards and 20 clients. If above is correct then the entire
system must be shut down for many hours for an upgrade...
Using SolrJ 3.6 against a Solr 4 server will *probably* work, as long as
you are not attempting to use SolrCloud, and your Solr 4 config is
otherwise completely compatible with the older client. If you just make
the minimum adjustments required to get your 3.6 config to work in 4,
rather than refactoring it to conform to the latest best practices, then
you might be OK. No guarantees can be made of course. The best thing
you can do is test everything on development hardware.
Additional note: If you are already using the newer server objects in
SolrJ 3.6 (HttpSolrServer in most cases) you might be able to drop the
v4 SolrJ jar into your 3.6 SolrJ app and have it continue to work. You
could give that a try before you even upgrade your server side.
Thanks,
Shawn
