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https://issues.apache.org/jira/browse/BEAM-6769?focusedWorklogId=249235&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-249235
]
ASF GitHub Bot logged work on BEAM-6769:
----------------------------------------
Author: ASF GitHub Bot
Created on: 28/May/19 10:08
Start Date: 28/May/19 10:08
Worklog Time Spent: 10m
Work Description: Juta commented on pull request #8621:
[BEAM-6769][BEAM-7327] add it test for writing and reading with bigqu…
URL: https://github.com/apache/beam/pull/8621#discussion_r288026195
##########
File path: sdks/python/apache_beam/io/gcp/bigquery_tools.py
##########
@@ -998,6 +1004,13 @@ def encode(self, table_row):
# This code will catch this error to emit an error that explains
# to the programmer that they have used NAN/INF values.
try:
+ # on python 3 base64 bytes are decoded to strings before being send to bq
+ if sys.version[0] == '3':
+ if type(table_row) == str:
Review comment:
This codepath will decode bytes when they are written to bigquery (it
expects bytes to be base-64 encoded but allows them to have type `bytes` or
`str`) This is to allow the same data that is read by bq to also be writen to
bq.
in
https://github.com/apache/beam/blob/master/sdks/python/apache_beam/io/gcp/bigquery_file_loads_test.py#L54
data is written to bigquery as a string so that is why we first do a
`json.loads ()`before handling the bytes decoding (and this is only necessary
in python 3).
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Issue Time Tracking
-------------------
Worklog Id: (was: 249235)
Time Spent: 17h (was: 16h 50m)
> BigQuery IO does not support bytes in Python 3
> ----------------------------------------------
>
> Key: BEAM-6769
> URL: https://issues.apache.org/jira/browse/BEAM-6769
> Project: Beam
> Issue Type: Sub-task
> Components: sdk-py-core
> Reporter: Juta Staes
> Assignee: Juta Staes
> Priority: Blocker
> Fix For: 2.14.0
>
> Time Spent: 17h
> Remaining Estimate: 0h
>
> 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
> {noformat}
> json.dumps({'test': b'test'}){noformat}
> 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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