Hi Steve, this seems to be more recent
https://sematext.com/blog/solr-vs-elasticsearch-differences/ On Thu, Mar 22, 2018 at 2:33 PM, Charlie Hull <char...@flax.co.uk> wrote: > On 22/03/2018 13:13, Steven White wrote: > >> Hi everyone, >> >> There are some good write ups on the internet comparing the two and the >> one >> thing that keeps coming up about Elasticsearch being superior to Solr is >> it's analytic capability. However, I cannot find what those analytic >> capabilities are and why they cannot be done using Solr. Can someone help >> me with this question? >> > > Hi Steve, > > As you've said there are lots of writeups, some more out-of-date than > others. http://solr-vs-elasticsearch.com/ is quite good on features. > > The analytics in ES are based on a number of custom aggregations (which I > always think of as facet-counting-on-steroids, but I realise it's more > complicated than that). Here's an early doc on them > https://www.elastic.co/guide/en/elasticsearch/guide/current/ > _analytics.html So you need a good grasp of Elasticsearch's DSL to use > these. The integration with Kibana is good if you want to display your > results. > > Solr's analytic capabilities use a Solr Search Component: > https://lucene.apache.org/solr/guide/7_2/analytics.html . As with a lot > of Solr features these can appear a lot more complex than Elasticsearch's > offering. Yonik's blog is also worth reading as he often talks about new > and upcoming Solr features like this. http://yonik.com/solr-facet-fu > nctions/ > > As we've always said, there are few cases where you can't build a solution > using either engine and I believe that's also true for analytics. > >> >> Personally, I'm a Solr user and the thing that concerns me about >> Elasticsearch is the fact that it is owned by a company that can any day >> decide to stop making Elasticsearch avaialble under Apache license and >> even >> completely close free access to it. >> > > Yes, but why would they? It would be suicide for a company that have such > an established open source heritage - not least because a lot of Lucene > developers who work for Elastic would object. I'd be a bit more annoyed > about the fact they announced that their commercial XPack add-ons would be > 'open code' and everyone thinks that means 'open source' - which it clearly > isn't. > >> >> So, this is a 2 part question: >> >> 1) What are the analytic capability of Elasticsearch that cannot be done >> using Solr? I want to see a complete list if possible. >> 2) Should an Elasticsearch user be worried that Elasticsearch may close >> it's open-source policy at anytime or that outsiders have no say about >> it's >> road map? >> > > That's a slightly different question about road map - but you do have some > say, Elastic's developers have always been very helpful and open to > suggestions from outsiders (who are also users of course!). > > Cheers > > Charlie > >> >> Thanks, >> >> Steve >> >> > > -- > Charlie Hull > Flax - Open Source Enterprise Search > > tel/fax: +44 (0)8700 118334 > mobile: +44 (0)7767 825828 > web: www.flax.co.uk > -- Vincenzo D'Amore
