presto-raptor-legacy/src/main/java/io/prestosql/plugin/raptor/legacy/RaptorPageSink.java/RaptorPageSink/createPageBuffer
class RaptorPageSink:    private PageBuffer createPageBuffer(OptionalInt bucketNumber)
    {
        return new PageBuffer(
                maxBufferBytes,
                storageManager.createStoragePageSink(transactionId, bucketNumber, columnIds, columnTypes, true),
                columnTypes,
                sortFields,
                sortOrders,
                pageSorter);
    }