public static void recoverFileLease(FileSystem fs, Path p, Configuration conf)
    throws IOException {
    recoverFileLease(fs, p, conf, null);
  }
Initialize reflection classes and methods. If LeaseRecoverable class is not found, look for
DistributedFilSystem#recoverLease method.
hbase-asyncfs/src/main/java/org/apache/hadoop/hbase/util/RecoverLeaseFSUtils.java