@BeforeClass
  public static void setUpBeforeClass() throws Exception {
    TEST_UTIL.getConfiguration().setClass(WALFactory.WAL_PROVIDER, FSHLogProvider.class,
      AbstractFSWALProvider.class);
    startCluster();
  }
TestBasicWALEntryStream with {@link FSHLogProvider} as the WAL provider.
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestBasicWALEntryStreamFSHLog.java