@AfterClass
  public static void tearDownAfterClass() throws Exception {
    LOG.info("Cleaning test directory: " + TEST_UTIL.getDataTestDir());
    TEST_UTIL.cleanupTestDir();
    TEST_UTIL.shutdownMiniDFSCluster();
  }
Tests of HRegion methods for replaying flush, compaction, region open, etc events for secondary
region replicas
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHRegionReplayEvents.java