apache_beam.transforms.xlang.io module

Cross-language transforms in this module can be imported from the apache_beam.io package.

class apache_beam.transforms.xlang.io.GenerateSequence(start, end=None, rate=None, expansion_service=None)

Bases: apache_beam.transforms.external_transform_provider.ExternalTransform

Outputs a PCollection of Beam Rows, each containing a single INT64 number called “value”. The count is produced from the given “start” value and either up to the given “end” or until 2^63 - 1. To produce an unbounded PCollection, simply do not specify an “end” value. Unbounded sequences can specify a “rate” for output elements. In all cases, the sequence of numbers is generated in parallel, so there is no inherent ordering between the generated values

Parameters:

• start – (numpy.int64) The minimum number to generate (inclusive).
• end – (numpy.int64) The maximum number to generate (exclusive). Will be an unbounded sequence if left unspecified.
• rate – (Row(elements=<class ‘numpy.int64’>, seconds=typing.Union[numpy.int64, NoneType])) Specifies the rate to generate a given number of elements per a given number of seconds. Applicable only to unbounded sequences.

identifier = 'beam:schematransform:org.apache.beam:generate_sequence:v1'