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https://issues.apache.org/jira/browse/SOLR-18251?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SOLR-18251:
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Labels: pull-request-available (was: )
> Add Solr schema support for DocValues skip lists
> ------------------------------------------------
>
> Key: SOLR-18251
> URL: https://issues.apache.org/jira/browse/SOLR-18251
> Project: Solr
> Issue Type: Task
> Components: Schema and Analysis
> Affects Versions: 10.1
> Reporter: Sanjay Dutt
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Lucene introduced optional skip lists on top of DocValues in
> apache/lucene#13449. The feature is exposed through the {{DocValuesSkipper}}
> abstraction and is controlled by a Lucene {{FieldType}} flag.
> Solr currently exposes DocValues through schema configuration, but does not
> provide a schema-level option to enable this DocValues skip list support.
> This issue proposes adding an opt-in Solr schema option, such as:
> {code:java}
> docValuesSkipList="true"{code}
> Example:
> {code:java}
> <field name="price"
> type="plong"
> indexed="false"
> docValues="true"
> docValuesSkipList="true" />{code}
> The Lucene PR notes that this can be efficient when the index is sorted and
> the field belongs to the index sorting.
> The actual benefit depends on data layout and query pattern, so this should
> be exposed as an opt-in feature.
> Only compatible DocValues field types should allow this option. Based on the
> Lucene PR, this applies to DocValues types such as {{{}NUMERIC{}}},
> {{{}SORTED_NUMERIC{}}}, {{{}SORTED{}}}, and {{{}SORTED_SET{}}}.
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