@AfterClass
  public static void tearDown() throws Exception {
    UTIL.shutdownMiniCluster();
  }
Testcase for HBASE-21843. Used to confirm that we use the correct name for meta wal file when
using {@link RegionGroupingProvider}.
hbase-server/src/test/java/org/apache/hadoop/hbase/wal/TestWrongMetaWALFileName.java