[jira] [Commented] (SOLR-12428) Adding LTR jar to _default configset

["Christine Poerschke (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-12428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16498568#comment-16498568 ] 

Christine Poerschke commented on SOLR-12428:
--------------------------------------------

Thanks [~ichattopadhyaya] for bringing this up. Sounds good to me to add it to the {{_default}} configset.

Would the {{queryParser}}, {{cache}} and {{transformer}} elements be added too? Or would just the {{lib}} be present out-of-the-box leaving users to add the rest e.g. via the Config API (haven't tried that actually yet myself with LTR) using names of their choice?

https://lucene.apache.org/solr/guide/7_3/learning-to-rank.html#ltr-configuration

> Adding LTR jar to _default configset
> ------------------------------------
>
>                 Key: SOLR-12428
>                 URL: https://issues.apache.org/jira/browse/SOLR-12428
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Ishan Chattopadhyaya
>            Assignee: Ishan Chattopadhyaya
>            Priority: Major
>
> Even though Solr comes out of the box with the LTR capabilities, it is not possible to use them in an existing collection without hand editing the solrconfig.xml to add the jar. Many other contrib jars are already present in the _default configset's solrconfig.xml.
> I propose to add the ltr jar in the _default configset's solrconfig:
> {code}
>   <lib dir="${solr.install.dir:../../../..}/dist/" regex="solr-ltr-\d.*\.jar" />
> {code}
> Any thoughts, [~cpoerschke]?



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