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https://issues.apache.org/jira/browse/SOLR-13890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17014242#comment-17014242
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ASF subversion and git services commented on SOLR-13890:
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Commit 6e4756fd48076abcecc94446ce3defeb3f907cc1 in lucene-solr's branch
refs/heads/master from Jason Gerlowski
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=6e4756f ]
SOLR-13890: Add "top-level" DV "terms" implementation (#1151)
{!terms} queries have a docValues-based implementation that uses per-segment DV
structures. This does well with a small to moderate (a few hundred) number of
query terms, but doesn't well scale beyond that due to repetitive seeks done on
each segment.
This commit introduces an implementation that uses a "top-level" docValues
structure, which scales much better to very large {!terms} queries (many
hundreds, thousands of terms).
> 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, SOLR-13890.patch, SOLR-13890.patch, Screen Shot 2020-01-02
> at 2.25.12 PM.png, post_optimize_performance.png,
> toplevel-tpi-perf-comparison.png
>
> Time Spent: 5h
> Remaining Estimate: 0h
>
> 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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