code: public void testIncrementColumnValue_UpdatingInPlace() throws IOException {
    initHRegion(tableName,getName(),fam1);
    long value=1L;
    long amount=3L;
    Put put=new Put(row);
    put.add(fam1,qual1,Bytes.toBytes(value));
    region.put(put);
    long result=region.incrementColumnValue(row,fam1,qual1,amount,true);
    assertEquals(value + amount,result);
    Store store=region.getStore(fam1);
    assertEquals(1,store.memstore.kvset.size());
    assertTrue(store.memstore.snapshot.isEmpty());
    assertICV(row,fam1,qual1,value + amount);
  }
  