Fix test

core/src/test/java/org/apache/iceberg/util/TestTableScanUtil.java

@@ -84,26 +84,23 @@ public void testAdaptiveSplitSize() {
     long minSplitSize = 16 * 1024 * 1024; // 16 MB
     long maxSplitSize = 512 * 1024 * 1024; // 512 MB
 
-    // targeting a split per slot with 80 slots would mean having splits with 9+ GB of data
+    // targeting 2 splits per slot with 80 slots would mean having splits with 4.5+ GB of data
     // that's why the utility would target for 19 * 80 = 1520 splits
     // it is the smallest number of splits that would produce a split size smaller than the maximum
     int smallParallelism = 80;
-    long expectedSplitSizeSmallParallelism = (long) (1.1 * (scanSize / 1520));
     Assert.assertEquals(
         "Split size must match",
-        expectedSplitSizeSmallParallelism,
+        (long) (1.1 * (scanSize / 1520)),
         TableScanUtil.computeSplitSize(scanSize, smallParallelism, minSplitSize, maxSplitSize));
 
-    // targeting a split per slot with 5K slots would produce well-sized splits
-    int reasonableParallelism = 5_000;
-    long expectedSplitSizeReasonableParallelism = (long) (1.1 * (scanSize / reasonableParallelism));
+    // targeting 2 splits per slot with 5K slots would produce well-sized splits
+    int mediumParallelism = 5_000;
     Assert.assertEquals(
         "Split size must match",
-        expectedSplitSizeReasonableParallelism,
-        TableScanUtil.computeSplitSize(
-            scanSize, reasonableParallelism, minSplitSize, maxSplitSize));
+        (long) (1.1 * (scanSize / (2 * mediumParallelism))),
+        TableScanUtil.computeSplitSize(scanSize, mediumParallelism, minSplitSize, maxSplitSize));
 
-    // targeting a split per slot with 100K slots would produce tiny splits
+    // targeting 2 splits per slot with 100K slots would produce tiny splits
     // that's why the min split size is used
     int bigParallelism = 100_000;
     Assert.assertEquals(