@Override
  public void stop(String why) {
    LOG.info("stop: " + why);
  }
Master procedure manager for coordinated cluster-wide WAL roll operation, which is run during
backup operation, see {@link MasterProcedureManager} and {@link RegionServerProcedureManager}
hbase-backup/src/main/java/org/apache/hadoop/hbase/backup/master/LogRollMasterProcedureManager.java