What advantage do you see in TLOG and/or PULL replicas? The TLOG and PULL replica types are for some pretty specific use cases, particularly high-indexing-throughput cases where you can't afford to index each doc on every node in your cluster. If you can afford the CPU cycles to index on every node, I'd stick with NRT replicas.
Yes, though, you can mix/match the types. I question whether you _want_ to, but you know your app best. Best, Erick On Fri, Dec 15, 2017 at 8:44 AM, Drooy Drooy <drooy2...@gmail.com> wrote: > Hi Erick/Robi, > > Thanks for your replies! one more question, if I go with solrcloud and > having PULL/TLOG replication mixed in the cluster, by the documentation, > this would have Master/Slave mode benefit as well, does that seem feasible > to you? are there any projects adopting this new feature in 7.0/7.1 ? > > Thanks > Drooy > > > On Thu, Dec 14, 2017 at 7:15 PM, Erick Erickson <erickerick...@gmail.com> > wrote: > >> Completely agree with Robert. I'd also add that you should _not_ copy >> your configs from 4x. Start with the 7x configs and add any >> customizations but don't change things like luceneMatchVersion and the >> like. >> >> If you simply _cannot_ reindex, take a look at >> https://github.com/cominvent/solr-tools/blob/master/ >> upgradeindex/upgradeindex.sh >> >> On Thu, Dec 14, 2017 at 2:24 PM, Petersen, Robert (Contr) >> <robert.peters...@ftr.com> wrote: >> > 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. >>
