SOLR error installing DSpace 9.1

[Federico Yemurenko]

Hi,

I´ve just installed 9.1 with the following configuration: 

- OS: Ubuntu 22.04.4 LTS (Jammy) (Released 2024-02-22) (Latest 24.04)
- Apache 2.4 (Version 2.4.52 Released 2021-12-20) (Latest xxx)
- JAVA 17 (OpenJDK) (Version 17.0.15 Released 2025-04-15) (Latest 24.0.2)
- Maven 3.8+ (Version 3.9.11 Released 2025-07-15) (Latest 3.9.11)
- Ant 1.8+ (Version 1.10.12 Released 2021-10-19) (Latest 1.10.15)
- Git 2.10+ (Version 2.41.0 Released 2023-06-01) (Latest 2.50.1)
- Tomcat 10+ (Version 11.0.9 Released 2025-07-01) (Latest 11.0.9)
- Solr 9+ (Version 9.9.0 Released 2025-07-24) (Latest 9.9.0)
- PostgreSQL 14+ (Version 17.5 Released 2025-05-08) (Latest 17.5)

The initial build went on fine but the server is not starting.  SOLR is not loading the cores.  The errror is 

2025-08-04 15:40:17.599 ERROR (coreLoadExecutor-13-thread-3) [c: s: r: x:qaevent t:] o.a.s.c.CoreContainer SolrCore failed to load on startup => org.apache.solr.common.SolrException: Unable to create core [qaevent]
at org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1798)
org.apache.solr.common.SolrException: Unable to create core [qaevent]
at org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1798) ~[?:?]
at org.apache.solr.core.CoreContainer.lambda$loadInternal$12(CoreContainer.java:1096) ~[?:?]
at com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:212) ~[metrics-core-4.2.26.jar:4.2.26]
at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:381) ~[?:?]
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?]
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?]
at java.base/java.lang.Thread.run(Thread.java:840) [?:?]
Caused by: org.apache.solr.common.SolrException: Could not load conf for core qaevent: Can't load schema /opt/solr/data/qaevent/conf/schema.xml: Plugin init failure for [schema.xml] fieldType "text": Plugin init failure for [schema.xml] analyzer/filter:  Error loading class 'org.apache.lucene.analysis.icu.ICUFoldingFilterFactory'

The same for the other five cores.

Full solr.log attached.

Any help will be appreciated

Regards

Federico

[Alfeu Uzai Tavares]

Hello, Federico,

I had a similar problem. 
In my case we have a custom Dockerfile for Solr, and had to change from the slim image (8.x-slim) to the full image for the 9.8 version (Solr version).

And also needed to add the environment variable: export SOLR_OPTS="-Dsolr.config.lib.enabled=true"

See: https://wiki.lyrasis.org/display/DSDOC9x/Installing+DSpace#InstallingDSpace-ApacheSolr9.x(full-textindex/searchservice)

Best regards,

Alfeu U. Tavares

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[Federico Yemurenko]

Thanks, Alfeu.  

I missed that requirement from the guide when upgraded solr.

I set solr.config.lib.enabled=true in /etc/default/solr.in.sh, restarted solr and tomcat and the 9.1 back-end is now up and running.

Regards

[Guillermo Esteban Murillo Goussen]

Hola Federico cómo estás?

Te fijaste que después de la versión 9.8 de Solr es necesario configurar una variable de entorno SOLR_OPTS?

export SOLR_OPTS="-Dsolr.config.lib.enabled=true"

Saludos,

Guillermo

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