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https://issues.apache.org/jira/browse/SOLR-16818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17727556#comment-17727556
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Jason Gerlowski commented on SOLR-16818:
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Cool idea, +1.
Unrelated: do top-level DV's really get used for faceting? For some reason I
thought they were limited to some of the more obscure query types (like 'join')?
> Add "warm" parameter to field definition
> ----------------------------------------
>
> Key: SOLR-16818
> URL: https://issues.apache.org/jira/browse/SOLR-16818
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Joel Bernstein
> Assignee: Joel Bernstein
> Priority: Major
>
> This is something that should have been done a long time ago. Many of the
> performance problems I've seen are due to not adding static warming queries
> for facets and joins. Expecting users to understand this is simply not the
> right approach. This ticket will add a "warm" parameter to fields which will
> warm the top level doc values cache after each new searcher is opened.
> We may want to deprecate static warming queries altogether in later releases
> of Solr because in my opinion their only job is to warm top level doc values
> caches.
> The approach to warming fields would be to inject some code where the static
> warming queries are executed which loops through all the fields marked
> warm=true in the schema and load the top level doc values for that field.
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