javanna commented on code in PR #12516:
URL: https://github.com/apache/lucene/pull/12516#discussion_r1315608401


##########
lucene/core/src/java/org/apache/lucene/search/AbstractKnnVectorQuery.java:
##########
@@ -95,20 +95,17 @@ public Query rewrite(IndexSearcher indexSearcher) throws 
IOException {
   }
 
   private TopDocs[] sequentialSearch(
-      List<LeafReaderContext> leafReaderContexts, Weight filterWeight) {
-    try {
-      TopDocs[] perLeafResults = new TopDocs[leafReaderContexts.size()];
-      for (LeafReaderContext ctx : leafReaderContexts) {
-        perLeafResults[ctx.ord] = searchLeaf(ctx, filterWeight);
-      }
-      return perLeafResults;
-    } catch (Exception e) {
-      throw new RuntimeException(e);

Review Comment:
   This looks like a way to compensate for the exception wrapping when doing 
concurrent search, by wrapping when doing sequential search do. This made it 
easier to test knn vector queries so far, regardless of whether rewrite is done 
concurrently or not. If we fix the root cause and remove the wrapping, we no 
longer need to artificially wrap here.



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