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https://issues.apache.org/jira/browse/SOLR-13890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16973952#comment-16973952
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Mikhail Khludnev edited comment on SOLR-13890 at 1/3/20 8:57 PM:
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FYI, Automaton uses inverted index, it works per segment. If number of terms is
small it builds per segment disjunction, thus if it bypasses filtercache it
will be even lazy, otherwise it eagerly builds per-segment docset.
was (Author: mkhludnev):
FYI, Automaton uses inverted index, it works per segment. If number of terms is
small it builds per segment conjunction, thus if it bypasses filtercache it
will be even lazy, otherwise it eagerly builds per-segment docset.
> Add postfilter support to {!terms} queries
> ------------------------------------------
>
> Key: SOLR-13890
> URL: https://issues.apache.org/jira/browse/SOLR-13890
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: query parsers
> Affects Versions: master (9.0)
> Reporter: Jason Gerlowski
> Assignee: Jason Gerlowski
> Priority: Major
> Attachments: SOLR-13890.patch, SOLR-13890.patch, SOLR-13890.patch,
> SOLR-13890.patch, Screen Shot 2020-01-02 at 2.25.12 PM.png,
> post_optimize_performance.png
>
>
> There are some use-cases where it'd be nice if the "terms" qparser created a
> query that could be run as a postfilter. Particularly, when users are
> checking for hundreds or thousands of terms, a postfilter implementation can
> be more performant than the standard processing.
> WIth this issue, I'd like to propose a post-filter implementation for the
> {{docValuesTermsFilter}} "method". Postfilter creation can use a
> SortedSetDocValues object to populate a DV bitset with the "terms" being
> checked for. Each document run through the post-filter can look at their
> doc-values for the field in question and check them efficiently against the
> constructed bitset.
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