We have solr cluster which has a few solr 3.5 node. Now we plan to perform online deployment and upgrade solr node from 3.5 to 4.2. Our plan is to shutdown one solr node and do the upgrade and restart it, and rolling other solr nodes. For some reason we will keep a few node running solr 3.5 for 2 more days. It means in 2 days, we will have both solr3.5 node and solr4.2 node to serve search.
My question is can solr 3.5 and solr 4.2 node work together? Each solr node only has solr application, and there is no dependencies between solr slaves. we will stop index replication between solr master and solr slaves. We also have solr aggregators to distribute search request to solr node, and we will upgrade solr aggregator too. Thanks This email and any attachments may contain confidential and proprietary information of Blackboard that is for the sole use of the intended recipient. If you are not the intended recipient, disclosure, copying, re-distribution or other use of any of this information is strictly prohibited. Please immediately notify the sender and delete this transmission if you received this email in error.
