backward compatibility of Solr 6.3 version with old Sol4j clients

[Suresh Pendap <SP...@walmartlabs.com>]

Hi,

Will Solrj client 4.10.3 version work with  Solr 6.3 version of the server?   I was trying to look up the documentation but no where the compatibility matrix between server and client is provided.
Has some one already used this combination?

Regards
Suresh

Re: backward compatibility of Solr 6.3 version with old Sol4j clients

[Damien Kamerman <da...@gmail.com>]

Regarding CloudSolrServer, I tried this briefly and found the client was
only aware of the old shared clusterstate.json.

On 4 February 2017 at 06:23, Shawn Heisey <ap...@elyograg.org> wrote:

> On 2/3/2017 10:12 AM, Suresh Pendap wrote:
> > Will Solrj client 4.10.3 version work with Solr 6.3 version of the
> > server? I was trying to look up the documentation but no where the
> > compatibility matrix between server and client is provided. Has some
> > one already used this combination?
>
> If it's HttpSolrServer (HttpSolrClient in newer versions), chances are
> good that it will work.  The basic http API in Solr does not change
> quickly.  If you run into problems, provide detailed information here or
> on the IRC channel and we'll try to help you work through them.
>
> I have done quite a bit of version mismatching with the http client.
> Currently I have code with the 6.x client that connects to 4.x, 5.x, and
> 6.x servers.  I have also used older clients with newer servers and had
> no issues.
>
> If it's CloudSolrServer (CloudSolrClient in newer versions), I wouldn't
> even try to make it work with that wide a version discrepancy.
> SolrCloud has evolved so rapidly over the last couple of years that
> connecting different client and server versions may not work at all.
> For best compatibility, they should be identical versions.  If they
> aren't, SolrJ should be newer than Solr, be from the same major version,
> and not be offset by more than one or two minor releases.
>
> Thanks,
> Shawn
>
>

Re: backward compatibility of Solr 6.3 version with old Sol4j clients

[Shawn Heisey <ap...@elyograg.org>]

On 2/3/2017 10:12 AM, Suresh Pendap wrote:
> Will Solrj client 4.10.3 version work with Solr 6.3 version of the
> server? I was trying to look up the documentation but no where the
> compatibility matrix between server and client is provided. Has some
> one already used this combination?

If it's HttpSolrServer (HttpSolrClient in newer versions), chances are
good that it will work.  The basic http API in Solr does not change
quickly.  If you run into problems, provide detailed information here or
on the IRC channel and we'll try to help you work through them.

I have done quite a bit of version mismatching with the http client. 
Currently I have code with the 6.x client that connects to 4.x, 5.x, and
6.x servers.  I have also used older clients with newer servers and had
no issues.

If it's CloudSolrServer (CloudSolrClient in newer versions), I wouldn't
even try to make it work with that wide a version discrepancy. 
SolrCloud has evolved so rapidly over the last couple of years that
connecting different client and server versions may not work at all. 
For best compatibility, they should be identical versions.  If they
aren't, SolrJ should be newer than Solr, be from the same major version,
and not be offset by more than one or two minor releases.

Thanks,
Shawn