code: @Override
    public void initialize(Configuration conf,  FSClusterStats stats,
                           NetworkTopology clusterMap, HostsFileReader hostsReader,
                           DNSToSwitchMapping dnsToSwitchMapping, FSNamesystem namesystem) {
      super.initialize(conf, stats, clusterMap, 
                       hostsReader, dnsToSwitchMapping, namesystem);
      this.conf = conf;
      this.minFileSize = conf.getLong(RaidNode.MINIMUM_RAIDABLE_FILESIZE_KEY,
          RaidNode.MINIMUM_RAIDABLE_FILESIZE);
      this.namesystem = namesystem;
      this.cachedLocatedBlocks = new CachedLocatedBlocks(conf);
      this.cachedFullPathNames = new CachedFullPathNames(conf);
    }
docs: {@inheritDoc}