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Posted to issues@solr.apache.org by "ilariapet (Jira)" <ji...@apache.org> on 2026/09/08 07:00:00 UTC
[jira] [Resolved] (SOLR-17999) LLM Model Store Not Initialized Unless QParser Is Declared
[ https://issues.apache.org/jira/browse/SOLR-17999?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ilariapet resolved SOLR-17999.
------------------------------
Resolution: Fixed
> LLM Model Store Not Initialized Unless QParser Is Declared
> ----------------------------------------------------------
>
> Key: SOLR-17999
> URL: https://issues.apache.org/jira/browse/SOLR-17999
> Project: Solr
> Issue Type: Bug
> Components: vector-search
> Affects Versions: 9.10
> Reporter: ilariapet
> Priority: Major
> Labels: pull-request-available
> Fix For: 10.0
>
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> An issue with the LLM module initialization process has been identified.
> At the moment, if the llm module is enabled, for example by starting Solr with:
> {code:java}
> bin/solr start -e techproducts -Dsolr.modules=llm {code}
> but nothing related to the LLM module is configured in {{{}solrconfig.xml{}}}, the text-to-vector model store does not get initialized:
> {code:java}
> {
> "responseHeader": {
> "status": 400,
> "QTime": 0
> },
> "error": {
> "metadata": [
> "error-class",
> "org.apache.solr.common.SolrException",
> "root-error-class",
> "org.apache.solr.common.SolrException"
> ],
> "msg": "No REST managed resource registered for path /schema/text-to-vector-model-store",
> "code": 400
> }
> } {code}
> Even if I add the TextToVectorUpdateProcessor, nothing happens.
> The Model Store is initialized *_only_* when the corresponding LLM QueryParser is explicitly declared in the configuration:
> {code:java}
> <queryParser name="knn_text_to_vector" class="org.apache.solr.llm.textvectorisation.search.TextToVectorQParserPlugin"/> {code}
> This is a bug because a user may want to use a text-to-vector model only at index time, without enabling the associated query parser at all.
> A solution would be to modify the initialization logic so that the Model Store is also initialized when the update processor is configured, not only when the QueryParser is present.
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