We run both, and we are running the latest versions for both. There are different use cases for each one. Where we are using solrcloud, it only has to operate in one datacenter, and sharding is incredibly important because we have billions and billions of documents. In a separate group of servers, we use master/slave in a cascade that runs through multiple datacenters, has relatively small indexes that don't really need to be sharded, and we need to be able to add and remove servers at a moment's notice, which really is not that simple to do with SolrCloud.
I wouldn't assume that people who are using replication are all stuck in the past and not using the cloud version out of some luddite aversion to software upgrades. SolrCloud's feature set doesn't allow for everything you can do with replication, just as replication doesn't allow for everything you can do with SolrCloud. Personally, I would love it if there were some kind of hybrid model (ie, a cloud that could replicate to another cloud), but that doesn't exist. Even if it did though, I would probably still use vanilla replication in certain contexts. -- Steve On Mon, Apr 24, 2017 at 10:58 PM, Erick Erickson <erickerick...@gmail.com<mailto:erickerick...@gmail.com>> wrote: Otis: bq: But it doesn't really matter so much whether people are the same or not I'm going to gently disagree here. I regularly see questions on the user's list about upgrading from 4.x or 3.x (!). So if the sample of users responding to your poll are substantially the same users as responded in 2013, there's no guarantee that they've even upgraded Solr, much less thought it worthwhile to change their paradigm. I suppose an interesting bit of additional data would be "when did you start using Solr?". Would there be a greater percentage of responders using SolrCloud in 2014 .vs. 2013? 2015 .vs. 2014? and so on. Mind you I have zero data to support any of this, it's speculation and I haven't looked at the poll so maybe I'm off base........ Erick On Mon, Apr 24, 2017 at 7:29 PM, Otis Gospodnetić <otis.gospodne...@gmail.com<mailto:otis.gospodne...@gmail.com>> wrote: > Hi, > > I think it's roughly the same profile of people. The poll from 2013 was on > Sematext blog and the new one is on Sematext Twitter account. But it > doesn't really matter so much whether people are the same or not. What > amazes me that in 2017 we don't see a lot more SolrCloud users! > > Otis > -- > Monitoring - Log Management - Alerting - Anomaly Detection > Solr & Elasticsearch Consulting Support Training - http://sematext.com/ > > > On Mon, Apr 24, 2017 at 8:04 PM, Erick Erickson > <erickerick...@gmail.com<mailto:erickerick...@gmail.com>> > wrote: > >> Yeah, this is kind of counter to my expectations too. I guess my >> question is whether the same people are responding to the new survey >> as the old one. "If it ain't broke" and all that. >> >> Erick >> >> On Mon, Apr 24, 2017 at 7:58 AM, Otis Gospodnetić >> <otis.gospodne...@gmail.com<mailto:otis.gospodne...@gmail.com>> wrote: >> > Hi, >> > >> > I'm really really surprised here. Back in 2013 we did a poll to see how >> > people were running Master-Slave (4.x back then) and SolrCloud was a bit >> > more popular than Master-Slave: >> > https://sematext.com/blog/2013/02/25/poll-solr-cloud-or-not/ >> > >> > Here is a fresh new poll with pretty much the same question - How do you >> > run your Solr? <https://twitter.com/sematext/status/854927627748036608> >> - >> > and guess what? SolrCloud is *not* at all a lot more prevalent than >> > Master-Slave. >> > >> > We definitely see a lot more SolrCloud used by Sematext Solr >> > consulting/support customers, so I'm a bit surprised by the results of >> this >> > poll so far. >> > >> > Is anyone else surprised by this? See https://twitter.com/sematext/ >> > status/854927627748036608 >> > >> > Thanks, >> > Otis >> > -- >> > Monitoring - Log Management - Alerting - Anomaly Detection >> > Solr & Elasticsearch Consulting Support Training - http://sematext.com/ >> WGSN (www.wgsn.com) is the world’s leading trend authority for creative thinkers in over 94 countries. Our services cover consumer insights, fashion and lifestyle forecasting, data analytics, crowd-sourced design validation and expert consulting. We help drive our customers to greater success. Together, we Create Tomorrow. WGSN is part of WGSN Limited, comprising of market-leading products including WGSN Insight, WGSN Fashion, WGSN Instock, WGSN Lifestyle & Interiors, WGSN Styletrial and WGSN Mindset, our bespoke consultancy services. WGSN is owned by Ascential plc, a leading international media company that informs and connects business professionals in 150 countries through market-leading Exhibitions and Festivals, and Information Services. 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