chore: fix comments

Author: liuxiaocs7

hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestCompactingMemStore.java

@@ -845,6 +845,12 @@ public void testMagicCompaction3Buckets() throws IOException {
     memstore.clearSnapshot(snapshot.getId());
   }
 
+  @Test
+  @Override
+  public void testScan() throws IOException {
+    scanMemStore(memstore, 6635);
+  }
+
   protected int addRowsByKeys(final AbstractMemStore hmc, String[] keys) {
     byte[] fam = Bytes.toBytes("testfamily");
     byte[] qf = Bytes.toBytes("testqualifier");

hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestCompactingToCellFlatMapMemStore.java

@@ -920,6 +920,12 @@ public void testBigCellSizeAfterInMemoryCompaction() throws IOException {
     }
   }
 
+  @Test
+  @Override
+  public void testScan() throws IOException {
+    scanMemStore(memstore, 915);
+  }
+
   private long addRowsByKeysDataSize(final AbstractMemStore hmc, String[] keys) {
     byte[] fam = Bytes.toBytes("testfamily");
     byte[] qf = Bytes.toBytes("testqualifier");

hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestDefaultMemStore.java

@@ -91,6 +91,7 @@ public class TestDefaultMemStore {
   public TestName name = new TestName();
   protected AbstractMemStore memstore;
   protected static final int ROW_COUNT = 10;
+  protected static final int SCAN_ROW_COUNT = 25000;
   protected static final int QUALIFIER_COUNT = ROW_COUNT;
   protected static final byte[] FAMILY = Bytes.toBytes("column");
   protected MultiVersionConcurrencyControl mvcc;
@@ -1135,15 +1136,19 @@ private static int doScan(MemStore ms, int iteration) throws IOException {
     return cnt;
   }
 
-  @Test
-  public void testScan() throws IOException {
+  protected void scanMemStore(MemStore ms, int expectedCount) throws IOException {
     long n1 = System.nanoTime();
-    addRows(25000, memstore);
+    addRows(SCAN_ROW_COUNT, ms);
     LOG.info("Took for insert: {}", (System.nanoTime() - n1) / 1000);
 
     for (int i = 0; i < 50; i++) {
-      int cnt = doScan(memstore, i);
-      assertEquals(memstore.getActive().getCellsCount(), cnt);
+      int cnt = doScan(ms, i);
+      assertEquals(expectedCount, cnt);
     }
   }
+
+  @Test
+  public void testScan() throws IOException {
+    scanMemStore(memstore, SCAN_ROW_COUNT * QUALIFIER_COUNT);
+  }
 }