Fix Int7uScorerBenchmarkTests for running on Java 21

Author: ChrisHegarty

benchmarks/src/main/java/org/elasticsearch/benchmark/vector/Int7uScorerBenchmark.java

@@ -134,10 +134,13 @@ public void setup() throws IOException {
         for (int i = 0; i < dims; i++) {
             queryVec[i] = ThreadLocalRandom.current().nextFloat();
         }
-        luceneDotScorerQuery = luceneScorer(values, VectorSimilarityFunction.DOT_PRODUCT, queryVec);
-        nativeDotScorerQuery = factory.getInt7SQVectorScorer(VectorSimilarityFunction.DOT_PRODUCT, values, queryVec).get();
-        luceneSqrScorerQuery = luceneScorer(values, VectorSimilarityFunction.EUCLIDEAN, queryVec);
-        nativeSqrScorerQuery = factory.getInt7SQVectorScorer(VectorSimilarityFunction.EUCLIDEAN, values, queryVec).get();
+
+        if (Runtime.version().feature() >= 22) {
+            luceneDotScorerQuery = luceneScorer(values, VectorSimilarityFunction.DOT_PRODUCT, queryVec);
+            nativeDotScorerQuery = factory.getInt7SQVectorScorer(VectorSimilarityFunction.DOT_PRODUCT, values, queryVec).get();
+            luceneSqrScorerQuery = luceneScorer(values, VectorSimilarityFunction.EUCLIDEAN, queryVec);
+            nativeSqrScorerQuery = factory.getInt7SQVectorScorer(VectorSimilarityFunction.EUCLIDEAN, values, queryVec).get();
+        }
     }
 
     @TearDown

benchmarks/src/test/java/org/elasticsearch/benchmark/vector/Int7uScorerBenchmarkTests.java

@@ -32,6 +32,10 @@ public static void skipWindows() {
         assumeFalse("doesn't work on windows yet", Constants.WINDOWS);
     }
 
+    static boolean supportsHeapSegments() {
+        return Runtime.version().feature() >= 22;
+    }
+
     public void testDotProduct() throws Exception {
         for (int i = 0; i < 100; i++) {
             var bench = new Int7uScorerBenchmark();
@@ -42,8 +46,10 @@ public void testDotProduct() throws Exception {
                 assertEquals(expected, bench.dotProductLucene(), delta);
                 assertEquals(expected, bench.dotProductNative(), delta);
 
-                expected = bench.dotProductLuceneQuery();
-                assertEquals(expected, bench.dotProductNativeQuery(), delta);
+                if (supportsHeapSegments()) {
+                    expected = bench.dotProductLuceneQuery();
+                    assertEquals(expected, bench.dotProductNativeQuery(), delta);
+                }
             } finally {
                 bench.teardown();
             }
@@ -60,8 +66,10 @@ public void testSquareDistance() throws Exception {
                 assertEquals(expected, bench.squareDistanceLucene(), delta);
                 assertEquals(expected, bench.squareDistanceNative(), delta);
 
-                expected = bench.squareDistanceLuceneQuery();
-                assertEquals(expected, bench.squareDistanceNativeQuery(), delta);
+                if (supportsHeapSegments()) {
+                    expected = bench.squareDistanceLuceneQuery();
+                    assertEquals(expected, bench.squareDistanceNativeQuery(), delta);
+                }
             } finally {
                 bench.teardown();
             }