kaivalnp commented on code in PR #13285:
URL: https://github.com/apache/lucene/pull/13285#discussion_r1599150976


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lucene/core/src/java/org/apache/lucene/search/AbstractVectorSimilarityQuery.java:
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@@ -105,13 +116,16 @@ public Scorer scorer(LeafReaderContext context) throws 
IOException {
         LeafReader leafReader = context.reader();
         Bits liveDocs = leafReader.getLiveDocs();
 
+        QueryTimeout queryTimeout = searcher.getTimeout();

Review Comment:
   > will `queryTimeout` be null?
   
   Yes, this is `null` when a timeout isn't set
   
   In this case, the `TimeLimitingKnnCollectorManager` [returns an unwrapped 
`KnnCollector`](https://github.com/apache/lucene/blob/fc12cc1847e37e588535391a0feed7b6adb75461/lucene/core/src/java/org/apache/lucene/search/TimeLimitingKnnCollectorManager.java#L42-L43)
 which does not add overhead of time checking (even `null` checks) during graph 
search (also visible in 
[benchmarks](https://github.com/apache/lucene/pull/13202#issuecomment-2016087745))



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