block1.js

// describe the table and write metadata to the backup
dynamo.describeTable({TableName: tablename}, function(err, data) {
  if (err) console.log(err, err.stack);
  else {
    table = data.Table
    // Write table metadata to first line
    data_stream.append(JSON.stringify(table));
    data_stream.append("\n");

    // limit the the number or reads to match our capacity
    params.Limit = table.ProvisionedThroughput.ReadCapacityUnits

    // start streaminf table data
    dynamo.scan(params, onScan);
  }
});