@AfterClass
  public static void tearDown() throws Exception {
    UTIL.shutdownMiniCluster();
  }
Confirm that we will batch region reopens when reopening all table regions. This can avoid the
pain associated with reopening too many regions at once.
hbase-server/src/test/java/org/apache/hadoop/hbase/master/procedure/TestReopenTableRegionsProcedureBatching.java