@VisibleForTesting
  void clearStartTimeCache() {
    startTimeWriteCache.clear();
    startTimeReadCache.clear();
  }
@Test
  public void testGetSingleEntity() throws IOException {
    super.testGetSingleEntity();
    ((RollingLevelDBTimelineStore)store).clearStartTimeCache();
    super.testGetSingleEntity();
    loadTestEntityData();
  }