Hi All,

This topic came up in yesterday's Developers Meeting, and we all felt it 
worth posting to the dspace-devel list for feedback.

Question: Should Discovery (Solr search/browse) be enabled by default in 
3.0?

== What would this mean? ==

It'd mean that Discovery faceted search/browse (backed by Solr) would be 
the default search/browse interface in 3.0.  Users would still be 
welcome to disable Discovery and use the Legacy Search & Browse 
mechanism (backed by Lucene & the database), and we'd provide clear 
instructions on how to do so.

Discovery could be enabled by default for just XMLUI or for both XMLUI & 
JSPUI (see below for more).

== Some possible "Pros" ==

* Discovery has been around since 1.6 (for XMLUI) and is becoming much 
more mature

* In 3.0, Discovery will be getting even more exciting features, 
including "search snippets", "hit highlighting", "more like this" 
recommendations, etc.  See this JIRA ticket for more details & 
screenshots: https://jira.duraspace.org/browse/DS-1229

* Also, there is a high probably that in 3.0, Discovery will also be 
available for the JSPUI. (Please note this hasn't officially been 
decided, but the work looks promising so far based on early feedback.) 
This work is being done by CILEA and is described at: 
https://jira.duraspace.org/browse/DS-1217

== Some possible "Cons" ==

* The JSPUI + Discovery work is still very "young". This may mean we'd 
want to closely consider whether Discovery is ready to enable by default 
for JSPUI.

* Discovery does require the DSpace "solr" web application to be 
installed/enabled in Tomcat. This is a separate webapp which sits 
alongside "xmlui" and "jspui". So, if we enable Discovery by default, we 
need to make clear in the Documentation that the "solr" webapp is needed 
to make the XMLUI and/or JSPUI run properly.


What do you think? Is this worth considering for 3.0?  Would you like to 
see Discovery enabled by default or should we keep it disabled by default?

- Tim

-- 
Tim Donohue
Technical Lead for DSpace Project
DuraSpace.org

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