@Parameters
  public static final Collection<Object[]> parameters() {
    int[] sleepDurations = new int[] { 0, 30000 };
    List<Object[]> configurations = new ArrayList<>();
    for (int i : sleepDurations) {
      configurations.add(new Object[] { i });
    }
    return configurations;
  }
Tests bulk loading of HFiles and shows the atomicity or lack of atomicity of the region server's
bullkLoad functionality.
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHRegionServerBulkLoad.java