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... Thanks Roy -----Original Message----- From: Tomás Fernández Löbbe [mailto:tomasflo...@gmail.com] Sent: Wednesday, January 02, 2013 10:23 AM To: solr-user@lucene.apache.org Subject: Re: Upgrading from 3.6 to 4.0 AFAIK Solr 4 should be able to read Solr 3.6 indexes. Soon those files will be updated to 4.0 format and will not be readable by Solr 3.6 anymore. See http://wiki.apache.org/lucene-java/BackwardsCompatibility You should not use a a 3.6 SolrJ client with Solr 4 server. Tomás On Wed, Jan 2, 2013 at 3:04 PM, Benjamin, Roy <rbenja...@ebay.com> wrote: > Will the existing 3.6 indexes work with 4.0 binary ? > > Will 3.6 solrJ clients work with 4.0 servers ? > > > Thanks > Roy >
