jimczi commented on code in PR #12962:
URL: https://github.com/apache/lucene/pull/12962#discussion_r1475878963


##########
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:
   For the dynamic k follow up we can also look at the order of the segments. 
For instance if we start with largest first we can be more aggressive on 
smaller segments. 



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