It is possible that your two or more of your objects v0 through v4 may be duplicates, especially because `TestData.getObject()` will return a boolean 20% of the time (see [Random.java](https://github.com/cinchapi/concourse/blob/develop/concourse/src/main/java/org/cinchapi/concourse/util/Random.java#L138)). To be safe, I would do something similar to what you did in the previous test like:

    for (int i = 0; i < testSize; i++) {
        Object value = null;
         while (value == null || initValues.contains(value)) {
              value = TestData.getObject();
          }
          initValues.add(value);
    }