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  1. Beam
  2. BEAM-1251 Python 3 Support
  3. BEAM-6769

BigQuery IO does not support bytes in Python 3

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Details

    • Sub-task
    • Status: Resolved
    • P0
    • Resolution: Fixed
    • None
    • 2.14.0
    • sdk-py-core
    • None

    Description

      In Python 2 you could write bytes data to BigQuery. This is tested in
      https://github.com/apache/beam/blob/master/sdks/python/apache_beam/io/gcp/big_query_query_to_table_it_test.py#L186

      Python 3 does not support

      json.dumps({'test': b'test'})

      which is used to encode the data in
      https://github.com/apache/beam/blob/master/sdks/python/apache_beam/io/gcp/bigquery_tools.py#L959

       

      How should writing bytes to BigQuery be handled in Python 3?

      • Forbid writing bytes into BigQuery on Python 3
      • Guess the encoding (utf-8?)
      • Pass the encoding to BigQuery

      cc: tvalentyn

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