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https://issues.apache.org/jira/browse/LUCENE-9449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17376131#comment-17376131
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ASF subversion and git services commented on LUCENE-9449:
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Commit bdef1be78fb46ab7bf1924386daab2a7db1a4316 in lucene-solr's branch
refs/heads/branch_8x from Mayya Sharipova
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=bdef1be ]
LUCENE-10020 DocComparator don't skip docs of same docID (#2530)
DocComparator should not skip docs with the same docID on multiple
sorts with search after.
Because of the optimization introduced in LUCENE-9449, currently when
searching with sort on [_doc, other fields] with search after,
DocComparator can efficiently skip all docs before and including
the provided [search after docID]. This is a desirable behaviour
in a single index search. But in a distributed search, where multiple
indices have docs with the same docID, and when searching on
[_doc, other fields], the sort optimization should NOT skip
documents with the same docIDs.
This PR fixes this.
Backport for https://github.com/apache/lucene/pull/204
Relates to LUCENE-9449
> Skip non-competitive documents when sort by _doc with search after
> ------------------------------------------------------------------
>
> Key: LUCENE-9449
> URL: https://issues.apache.org/jira/browse/LUCENE-9449
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Mayya Sharipova
> Priority: Minor
> Fix For: 8.7
>
> Time Spent: 5.5h
> Remaining Estimate: 0h
>
> Enhance DocComparator to provide an iterator over competitive documents when
> search ing with "after" FieldDoc.
> This iterator can quickly position on the desired "after" document, and skip
> all documents or even segments that contain documents before "after"
> This is especially efficient when "after" is high.
>
> Related to LUCENE-9280
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