Class DataFormat (2.18.1)

DataFormat(value)

Data format for input or output data.

Values: DATA_FORMAT_UNSPECIFIED (0):

AVRO (1):
    Avro is a standard open source row based file
    format. See https://avro.apache.org/ for more
    details.
ARROW (2):
    Arrow is a standard open source column-based
    message format. See https://arrow.apache.org/
    for more details.