tvalentyn commented on a change in pull request #11086: [BEAM-8910] Make custom
BQ source read from Avro
URL: https://github.com/apache/beam/pull/11086#discussion_r406969613
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File path: sdks/python/apache_beam/io/gcp/bigquery.py
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@@ -1570,6 +1584,10 @@ class _ReadFromBigQuery(PTransform):
bucket where the extracted table should be written as a string or
a :class:`~apache_beam.options.value_provider.ValueProvider`. If
:data:`None`, then the temp_location parameter is used.
+ backwards_compatible_data_format (bool): By default, this transform reads
+ data in native Python types that come from Avro-exports of BigQuery. By
+ setting this flag to True, the transform will return JSON-types, like
+ the older BigQuerySource.
Review comment:
1. Do all BQ types have a native python type?
2. What are JSON-types?
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