presto-tpcds/src/main/java/io/prestosql/plugin/tpcds/TpcdsConnectorFactory.java/TpcdsConnectorFactory/getSplitsPerNode
class TpcdsConnectorFactory:    private int getSplitsPerNode(Map<String, String> properties)
    {
        try {
            return parseInt(firstNonNull(properties.get("tpcds.splits-per-node"), String.valueOf(defaultSplitsPerNode)));
        }
        catch (NumberFormatException e) {
            throw new IllegalArgumentException("Invalid property tpcds.splits-per-node");
        }
    }