presto-tpcds/src/main/java/io/prestosql/plugin/tpcds/TpcdsConnectorFactory.java/TpcdsConnectorFactory/TpcdsConnectorFactory
class TpcdsConnectorFactory:    public TpcdsConnectorFactory(int defaultSplitsPerNode)
    {
        checkState(defaultSplitsPerNode > 0, "default splits per node is negative");
        this.defaultSplitsPerNode = defaultSplitsPerNode;
    }