[Koha-devel] Elasticsearch changing licences

[Ere Maijala]

I'd say that you're right in that Solr is the only viable alternative. 
Which, from my point of view, is actually quite thrilling since I feel 
much more at home with Solr. That said, I find it just a little bit 
annoying how often it seems that something that happens outside your 
core of work forces you to do a lot of extra work.

I've yet to encounter an ILS with enough records to need clustering. Our 
discovery interface uses Solr with a 6-shard SolrCloud instance, but 
then it's 80+ million records. So I believe this won't be an issue. Solr 
also support sharding without SolrCloud, but it's still somewhat complex 
and not automatic like with ES. Though I read somewhere that ES is also 
moving to default to a single shard.

While both are Lucene-based, they're quite different. Or rather, the 
approaches they take are quite different. ES to me feels more like "make 
it easy to get started, but beware, there will be obstacles", while Solr 
is more like "here's what you need to consider before getting started, 
and it may feel daunting, but you'll be much more informed in the long run".

Luckily, I think that with Koha the largest amount of work with ES has 
been in getting to the point where it's not assuming Zebra everywhere. 
This would make the task of introducing Solr much more reasonable.

--Ere

dcook at prosentient.com.au kirjoitti 18.1.2021 klo 3.08:
> I wonder that too. In the past, Solr didn't have cluster options, but it seems like it might have SolrCloud now for that? I think it uses Apache ZooKeeper which adds overhead and complexity. Elasticsearch's clustering is a lot more self-contained if I recall correctly. But then clustering would only be needed for more advanced implementations...
> 
> But Solr is probably the only viable alternative to Elasticsearch at this point?
> 
> David Cook
> Software Engineer
> Prosentient Systems
> Suite 7.03
> 6a Glen St
> Milsons Point NSW 2061
> Australia
> 
> Office: 02 9212 0899
> Online: 02 8005 0595
> 
> -----Original Message-----
> From: Koha-devel <koha-devel-bounces at lists.koha-community.org> On Behalf Of Joonas Kylmälä
> Sent: Friday, 15 January 2021 9:07 PM
> To: koha-devel at lists.koha-community.org
> Subject: Re: [Koha-devel] Elasticsearch changing licences
> 
> Ḧi,
> 
> yeah, just heard about this. We might want to start looking into some community developed solution, maybe solr?
> 
> Joonas
> 
> On 15/01/2021 07:22, dcook at prosentient.com.au wrote:
>> Hi all,
>>
>>   
>>
>> Have folk heard that Elastic is changing the Elasticsearch licence?
>>
>>   
>>
>> Depending on your sources and your beliefs, this may or may not
>> matter, but certainly something to be aware of.
>>
>>   
>>
>> https://www.elastic.co/pricing/faq/licensing
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-- 
Ere Maijala
Kansalliskirjasto / The National Library of Finland