#740 Adding k=9 to FixedSizeListDecodeBenchmark

Author: gunnarmorling

performance-testing/generate_fixed_size_list_data.py

@@ -41,7 +41,7 @@
 
 # k=3 covers the multi-byte-period bit-packed regime (period 3 bytes, the RGB /
 # 3D-vector case); 4 and 8 are single-byte-period; 16+ have an RLE interior.
-K_SWEEP = [1, 3, 4, 8, 16, 128, 768, 1536]
+K_SWEEP = [1, 3, 4, 8, 9, 16, 128, 768, 1536]
 TOTAL_VALUES = 8_000_000  # leaf floats per file; rows = TOTAL_VALUES // k
 
 # Almost-fixed corpus for FixedSizeListFallbackBenchmark (the detector's fallback

performance-testing/micro-benchmarks/src/main/java/dev/hardwood/benchmarks/FixedSizeListDecodeBenchmark.java

@@ -87,7 +87,7 @@ public class FixedSizeListDecodeBenchmark {
 
     // k=3 covers the multi-byte-period bit-packed regime (RGB / 3D vectors);
     // 4 and 8 are single-byte-period; 16 and up carry an RLE interior.
-    @Param({ "1", "3", "4", "8", "16", "128", "768", "1536" })
+    @Param({ "1", "3", "4", "8", "9", "16", "128", "768", "1536" })
     private int k;
 
     private Path listPath;
@@ -172,7 +172,7 @@ private static double sumColumn(Path path, String column, HardwoodContext contex
         try (ParquetFileReader reader = ParquetFileReader.open(InputFile.of(path), context, config);
              ColumnReader col = reader.columnReader(column)) {
             while (col.nextBatch()) {
-                float[] values = (float[]) col.getFloats();
+                float[] values = col.getFloats();
                 int n = col.getValueCount();
                 for (int i = 0; i < n; i++) {
                     sum += values[i];