tveasey commented on code in PR #12962:
URL: https://github.com/apache/lucene/pull/12962#discussion_r1475846853
##########
lucene/core/src/java/org/apache/lucene/search/AbstractKnnVectorQuery.java:
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@@ -79,24 +83,32 @@ public Query rewrite(IndexSearcher indexSearcher) throws
IOException {
filterWeight = null;
}
+ final boolean supportsConcurrency = indexSearcher.getSlices().length > 1;
Review Comment:
It is because later graph searches are faster: they use information gathered
in earlier ones. (Note though the speed up is only relative to not sharing
information and searching multiple graphs not relative to searching a single
graph.)
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