Video that accompanies this presentation at: http://www.youtube.com/watch?v=1t3Z2pJyulA Join us for a guided tour of the Alfresco SOLR integration and new search sub-systems. We’ll discuss how it works, the limitations of eventual consistency, guidance for configuration and set-up. We’ll also cover the steps required to migrate, improved PATH performance, in-query ACL evaluation, cross-language support and monitoring as well as performance.

1. Understanding The SOLR Integration
Andy Hind • Senior Developer • twitter @andy_hind

2. Agenda
• Why SOLR?
• What is supported?
• Eventual consistency
• Configuration and setup
• How to migrate
• Status/reporting
• Improvements

3. Why SOLR?
• Issues…
o Cluster – index per node
o Performance
• Permission evaluation
• Structural queries
• In-transaction indexing
o Scale query independently
o Cross-locale support
o Sub-system and dynamic configuration

4. What is supported?
• Spaces store
• Archive
• Query languages
• NOT
o WCM based on AVM
o Records Management
o All stores
o Multi-tenant
o In transaction (eventually consistent)

5. Eventual consistency
• SOLR is tracking Alfresco
o Following transactions – a bit like clustering
o Eventual consistency
o Transactions that may take some time to commit
o Two cores
• SpacesStore
• ArchiveStore

6. Eventual consistency
• Models
• ACLs
• Metadata
• Content
• Ownership
• Structure - PATH

7. High Level Architecture
Search
Requests
Search Results
Repository
Async: Solr
Index Polling
Content Database
Store(s) Storage
Updates
Models Solr Cores:
ACLS Solr - Workspace
Cores
Properties & Content - Archive

8. Setup
• SOLR is a web app
o zip
• Communicates over SSL
o Generate and configure your certificates …
• Per core configuration in SOLR
o Data location
• Installer default

9. Configuration
• Search sub-systems
o solr, lucene
o Change configuration without restarting Alfresco
• JMX/Share admin
• Lucene
o Lots – sub-set in share
• SOLR
o Host/port/SSL
• Properties

10. How to migrate
• Carry on using lucene
• Configure SOLR
• Configure Alfresco
o Support SOLR tracking
• Monitor SOLR tracking
• Switch sub-systems when ready
• You can switch back to lucene
o It will check its state as it does now at start up

11. Stats and reporting
• JMX/Share
o Later ….
• Direct to SOLR
o https://localhost:8443/solr/admin/cores?action=SUMMARY
o https://localhost:8443/solr/admin/cores?action=REPORT
• Fix
o JMX
o https://localhost:8443/solr/admin/cores?action=FIX

12. Improvements
• PATH
• Access evaluation
o Query time
• Cross-language/locale support
o Query/Tokenisation
o Sorting
• SOLR
o Query caching
o Facets

13. Improvements …
• Cross-language
o Standard tokenisation
o Configurable
o Default – SOLR WordDelimiterFilterFactory
• BigWoof-123-A47.txt
• .txt, Big, 123A, 123a47txt, 47, A47,
BigWoof123A47txt

14. Improvements …
• Cross-language
o Sort
• d:text
– en: peach péché pêche sin
– fr: peach pêche péché sin
• d:mltext
– Nearest match

15. Improvements …
• Indexing Control
o cm:indexControl
o cm:isIndexed (Boolean)
• Enable/disable All indexing (properties &
content)
o cm:isContentIndexed (Boolean)
• Enable/disable Content Indexing

16. Improvements …
• Canned Queries
o How is share affected by eventual consistency?
o DB
o Not lucene/SOLR

17. Where is SOLR/Lucene used?
• Advanced Search
• Filters
• Tags (not the roll up)
• Categories (facets)
• Dashlets
o E.g. Recently Modified
• People, Groups, Sites will use DB query unless
o Start with *xyz
o Other wildcards

18. SOLR futures
• SOLR cloud
• SOLR/Lucene improvements
o Performance
o Future 3.4, 4.0, ...
• Geo

19. Demos ….

20. Questions?