@BeforeClass
  public static void setUp() throws Exception {
    UTIL.getConfiguration().setInt(ServerManager.WAIT_ON_REGIONSERVERS_MINTOSTART, 1);
    UTIL.startMiniCluster(1);
    UTIL.createTable(TABLE_NAME, CF);
  }
Confirm that we will do backoff when retrying on reopening table regions, to avoid consuming all
the CPUs.
hbase-server/src/test/java/org/apache/hadoop/hbase/master/procedure/TestReopenTableRegionsProcedureBackoff.java