>From what I have read, you can only upgrade to the next major version number >without using a tool to convert the indexes to the newer version. But that is >still perilous due to deprications etc
So I think best advice out there is to spin up a new farm on 7.1 (especially from 4.x), make a new collection there, reindex everything into it and then switch over to the new farm. I would also ask the question are you thinking to go to master/slave on 7.1? Wouldn't you want to go with solr cloud? I started with master/slave and yes it is simpler but there is that one single point of failure (the master) for indexing, which is of course easily manually overcome by purposing a slave as the new master and repointing the remaining slaves at the new master however this is a completely manual process you try to avoid in cloud mode. I think you'd need to think this through more fully with the new possibilities available and how you'd want to migrate given your existing environment is so far behind. Thanks Robi ________________________________ From: Drooy Drooy <drooy2...@gmail.com> Sent: Thursday, December 14, 2017 1:27:53 PM To: solr-user@lucene.apache.org Subject: Solr upgrade from 4.x to 7.1 Hi All, We have an in-house project running in Solr 4.7 with Master/Slave mode for a few years, what is it going to take to upgrade it to SolrCloud with TLOG/PULL replica mode ? I read the upgrade guides, none of them talking about the jump from 4.x to 7. Thanks much ________________________________ This communication is confidential. Frontier only sends and receives email on the basis of the terms set out at http://www.frontier.com/email_disclaimer.
