public ModifyableColumnFamilyDescriptor setDFSReplication(short replication) {
      if (replication < 1 && replication != DEFAULT_DFS_REPLICATION) {
        throw new IllegalArgumentException(
          "DFS replication factor cannot be less than 1 if explicitly set.");
      }
      return setValue(DFS_REPLICATION_BYTES, Short.toString(replication));
    }
Set the replication factor to hfile(s) belonging to this family
@param replication number of replicas the blocks(s) belonging to this CF should have, or
                   {@link #DEFAULT_DFS_REPLICATION} for the default replication factor set in
                   the filesystem
@return this (for chained invocation)
hbase-client/src/main/java/org/apache/hadoop/hbase/client/ColumnFamilyDescriptorBuilder.java