Moderator, please disregard this email. I was able to fix this issue by setting the environment variable SOLR_MODULES correctly.

On Mar 9, 2026, at 9:51 PM, Steven Smith <steve.t.smith@gmail.com> wrote:

I’m trying to use the latest dovecot solr module solr-config-9.xml at with Solr 9.10.1:

https://github.com/dovecot/core/blob/956fd0f9a101673be72a7df7d643dd20cf4c40e...

This dovecot module has been updated to work with version 9.8 and removes the deprecated <lib> directives. However, I observe that it does not load under solr 9.10.1 with the Java exception below.

Does anyone have any pointers on how to modify this module for the latest solr versions?

var/solr/logs/solr-8983-console.log:

...

2026-03-10 01:34:45.983 INFO (main) [] o.a.s.c.CorePropertiesLocator Found 1 core definitions underneath /opt/local/var/solr 2026-03-10 01:34:45.984 INFO (main) [] o.a.s.c.CorePropertiesLocator Cores are: [dovecot] 2026-03-10 01:34:46.012 INFO (coreLoadExecutor-13-thread-1) [ x:dovecot] o.a.s.c.SolrConfig Using Lucene MatchVersion: 9.8.0 2026-03-10 01:34:46.045 INFO (coreLoadExecutor-13-thread-1) [ x:dovecot] o.a.s.s.ManagedIndexSchemaFactory The schema is configured as managed, but managed schema resource managed-schema.xml not found - loading non-managed schema schema.xml instead 2026-03-10 01:34:46.064 INFO (coreLoadExecutor-13-thread-1) [ x:dovecot] o.a.s.s.IndexSchema Schema name=dovecot 2026-03-10 01:34:46.100 ERROR (coreLoadExecutor-13-thread-1) [ x:dovecot] o.a.s.c.CoreContainer SolrCore failed to load on startup =>org.apache.solr.common.SolrException: Unable to create core [dovecot] at org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1803)

Moderator, please disregard this email. I was able to fix this issue by setting the environment variable SOLR_MODULES correctly.

 On Mar 9, 2026, at 9:51PM, Steven Smith <steve.t.smith@gmail.com> wrote:
 I'm trying to use the latest dovecot solr module solr-config-9.xml at
 with Solr 9.10.1:
 [1]https://github.com/dovecot/core/blob/956fd0f9a101673be72a7df7d643dd20cf4c40e7/doc/solr-config-9.xml
 This dovecot module has been updated to work with version 9.8 and
 removes the deprecated <lib> directives. However, I observe that it does
 not load under solr 9.10.1 with the Java exception below.
 Does anyone have any pointers on how to modify this module for the
 latest solr versions?
 var/solr/logs/solr-8983-console.log:

   2026-03-10 01:34:45.983 INFO  (main) [] o.a.s.c.CorePropertiesLocator
   Found 1 core definitions underneath /opt/local/var/solr
   2026-03-10 01:34:45.984 INFO  (main) [] o.a.s.c.CorePropertiesLocator
   Cores are: [dovecot]
   2026-03-10 01:34:46.012 INFO  (coreLoadExecutor-13-thread-1) [
   x:dovecot] o.a.s.c.SolrConfig Using Lucene MatchVersion: 9.8.0
   2026-03-10 01:34:46.045 INFO  (coreLoadExecutor-13-thread-1) [
   x:dovecot] o.a.s.s.ManagedIndexSchemaFactory The schema is configured
   as managed, but managed schema resource managed-schema.xml  not found
   - loading non-managed schema schema.xml instead
   2026-03-10 01:34:46.064 INFO  (coreLoadExecutor-13-thread-1) [
   x:dovecot] o.a.s.s.IndexSchema Schema name=dovecot
   2026-03-10 01:34:46.100 ERROR (coreLoadExecutor-13-thread-1) [
   x:dovecot] o.a.s.c.CoreContainer SolrCore failed to load on startup
   =>org.apache.solr.common.SolrException: Unable to create core
   [dovecot]
           at
   org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1803)

References

Visible links

1. https://github.com/dovecot/core/blob/956fd0f9a101673be72a7df7d643dd20cf4c40e...