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https://issues.apache.org/jira/browse/AIRFLOW-75?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alex Papanicolaou updated AIRFLOW-75:
-------------------------------------
    Description: 
The bug is in:
https://github.com/apache/incubator-airflow/blob/3198756bceb9048829cfcd225e50336b6eee8f76/airflow/hooks/S3_hook.py#L55

Comment in _parse_s3_config, lines 43-44:

:param config_format: config type. One of "boto", "s3cmd" or "aws".
        Defaults to "boto"

However in S3Hook on lines 111-112:

# The format can be None and will default to boto in the parser
self.s3_config_format = self.extra_params.get('s3_config_format')

So what happens is, if s3_config_format is None, in line 55 it hasn't properly 
set it as the default value before applying the lower method.


  was:

The bug is in:
https://github.com/apache/incubator-airflow/blob/3198756bceb9048829cfcd225e50336b6eee8f76/airflow/hooks/S3_hook.py#L55

Comment in _parse_s3_config, lines 43-44:

:param config_format: config type. One of "boto", "s3cmd" or "aws".
        Defaults to "boto"

However in S3Hook on lines 111-112:

# The format can be None and will default to boto in the parser
self.s3_config_format = self.extra_params.get('s3_config_format')

So what happens is, if s3_config_format is None, in line 55 it hasn't properly 
set it as the default value before applying the lower method.



> S3 config file parsing
> ----------------------
>
>                 Key: AIRFLOW-75
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-75
>             Project: Apache Airflow
>          Issue Type: Bug
>          Components: hooks
>    Affects Versions: Airflow 1.7.0
>            Reporter: Alex Papanicolaou
>            Priority: Minor
>
> The bug is in:
> https://github.com/apache/incubator-airflow/blob/3198756bceb9048829cfcd225e50336b6eee8f76/airflow/hooks/S3_hook.py#L55
> Comment in _parse_s3_config, lines 43-44:
> :param config_format: config type. One of "boto", "s3cmd" or "aws".
>         Defaults to "boto"
> However in S3Hook on lines 111-112:
> # The format can be None and will default to boto in the parser
> self.s3_config_format = self.extra_params.get('s3_config_format')
> So what happens is, if s3_config_format is None, in line 55 it hasn't 
> properly set it as the default value before applying the lower method.



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