reta commented on code in PR #13542:
URL: https://github.com/apache/lucene/pull/13542#discussion_r1752230454


##########
lucene/core/src/java/org/apache/lucene/search/IndexSearcher.java:
##########
@@ -233,7 +235,13 @@ public IndexSearcher(IndexReaderContext context, Executor 
executor) {
             ? leaves ->
                 leaves.isEmpty()
                     ? new LeafSlice[0]
-                    : new LeafSlice[] {new LeafSlice(new ArrayList<>(leaves))}
+                    : new LeafSlice[] {
+                      new LeafSlice(
+                          new ArrayList<>(

Review Comment:
   We probably could use the immutable list without allocating `new ArrayList`?
   
   ```suggestion
     leaves.stream()
                 .map(LeafReaderContextPartition::createForEntireSegment)
                 .toList())
   ```



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