final int BATCH_SIZE = 5;
// new scanner
ScannerModel model = new ScannerModel();
model.setBatch(BATCH_SIZE);
model.addColumn(Bytes.toBytes(COLUMN_1));
model.addLabel(PUBLIC);
StringWriter writer = new StringWriter();
marshaller.marshal(model, writer);
byte[] body = Bytes.toBytes(writer.toString());
// recall previous put operation with read-only off
conf.set("hbase.rest.readonly", "false");