presto-tpcds/src/main/java/io/prestosql/plugin/tpcds/TpcdsNodePartitioningProvider.java/TpcdsNodePartitioningProvider/getSplitBucketFunction
class TpcdsNodePartitioningProvider:    @Override
    public ToIntFunction<ConnectorSplit> getSplitBucketFunction(ConnectorTransactionHandle transactionHandle, ConnectorSession session, ConnectorPartitioningHandle partitioningHandle)
    {
        return value -> ((TpcdsSplit) value).getPartNumber();
    }