@Parameterized.Parameters
  public static List<Object[]> data() {
    return Arrays.asList(new Object[][]{{false, false}, {false, true}, {true, false}, {true, true}});
  }
Running for both segmented and non-segmented log, as well as direct memory usage metric disabled and enabled.
@return an array with values for both the parameters both {@code false} and {@code true}.
ambry-store/src/test/java/com/github/ambry/store/BlobStoreTest.java