[jira] [Closed] (AIRFLOW-1558) S3FileTransformOperator fails in Python 3 due to file mode

["Ash Berlin-Taylor (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AIRFLOW-1558?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ash Berlin-Taylor closed AIRFLOW-1558.
--------------------------------------
    Resolution: Duplicate

> S3FileTransformOperator fails in Python 3 due to file mode
> ----------------------------------------------------------
>
>                 Key: AIRFLOW-1558
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-1558
>             Project: Apache Airflow
>          Issue Type: Bug
>          Components: operators
>    Affects Versions: 1.8.0
>         Environment: python3
>            Reporter: Adam Wentz
>            Priority: Minor
>
> When running under python3 the S3FileTransformOperator fails with the following error:
> {noformat}
> [2017-09-01 18:44:54,440] {models.py:1427} ERROR - write() argument must be str, not bytes
> [2017-09-01 18:44:54,443] {base_task_runner.py:95} INFO - Subtask: Traceback (most recent call last):
> [2017-09-01 18:44:54,444] {base_task_runner.py:95} INFO - Subtask:   File "/usr/local/lib/python3.6/site-packages/airflow/models.py", line 1384, in run
> [2017-09-01 18:44:54,445] {base_task_runner.py:95} INFO - Subtask:     result = task_copy.execute(context=context)
> [2017-09-01 18:44:54,445] {base_task_runner.py:95} INFO - Subtask:   File "/usr/local/lib/python3.6/site-packages/airflow/operators/s3_file_transform_operator.py", line 87, in execute
> [2017-09-01 18:44:54,446] {base_task_runner.py:95} INFO - Subtask:     source_s3_key_object.get_contents_to_file(f_source)
> [2017-09-01 18:44:54,446] {base_task_runner.py:95} INFO - Subtask:   File "/usr/local/airflow/.local/lib/python3.6/site-packages/boto/s3/key.py", line 1662, in get_contents_to_file
> [2017-09-01 18:44:54,447] {base_task_runner.py:95} INFO - Subtask:     response_headers=response_headers)
> [2017-09-01 18:44:54,447] {base_task_runner.py:95} INFO - Subtask:   File "/usr/local/airflow/.local/lib/python3.6/site-packages/boto/s3/key.py", line 1494, in get_file
> [2017-09-01 18:44:54,447] {base_task_runner.py:95} INFO - Subtask:     query_args=None)
> [2017-09-01 18:44:54,448] {base_task_runner.py:95} INFO - Subtask:   File "/usr/local/airflow/.local/lib/python3.6/site-packages/boto/s3/key.py", line 1548, in _get_file_internal
> [2017-09-01 18:44:54,448] {base_task_runner.py:95} INFO - Subtask:     fp.write(bytes)
> [2017-09-01 18:44:54,448] {base_task_runner.py:95} INFO - Subtask:   File "/usr/local/lib/python3.6/tempfile.py", line 483, in func_wrapper
> [2017-09-01 18:44:54,449] {base_task_runner.py:95} INFO - Subtask:     return func(*args, **kwargs)
> [2017-09-01 18:44:54,449] {base_task_runner.py:95} INFO - Subtask: TypeError: write() argument must be str, not bytes
> [2017-09-01 18:44:54,450] {base_task_runner.py:95} INFO - Subtask: [2017-09-01 18:44:54,443] {models.py:1451} INFO - Marking task as FAILED.
> {noformat}
> The solution is to open the `NamedTemporaryFile`s with mode `wb` rather than `w`. PR: https://github.com/apache/incubator-airflow/pull/2559



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