in java/dataflow-connector-examples/src/main/java/com/google/cloud/bigtable/dataflow/example/BigQueryBigtableTransfer.java [52:64]
public void processElement(DoFn<TableRow, Mutation>.ProcessContext c) throws Exception {
TableRow row = c.element();
//Use UUID for each HBase item's row key
Put p = new Put(java.util.UUID.randomUUID().toString().getBytes());
for (Map.Entry<String, Object> field : row.entrySet()) {
p.addColumn(FAMILY, field.getKey().getBytes(), ((String) field.getValue()).getBytes());
}
c.output(p);
}