pabloem commented on a change in pull request #11086:
URL: https://github.com/apache/beam/pull/11086#discussion_r439592201
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File path: sdks/python/apache_beam/io/gcp/bigquery.py
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@@ -78,6 +72,12 @@
or a table. Pipeline construction will fail with a validation error if neither
or both are specified.
+When reading from BigQuery using `BigQuerySource`, bytes are returned as
+base64-encoded bytes. When reading via `ReadFromBigQuery`, bytes are returned
+as bytes without base64 encoding. This is due to the fact that ReadFromBigQuery
+uses Avro expors by default. To get base64-encoded bytes, you can use the flag
Review comment:
done
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