[jira] [Updated] (AIRFLOW-2053) BigQuery Hook bug when data doesn't contain quoted values

["Kaxil Naik (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AIRFLOW-2053?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kaxil Naik updated AIRFLOW-2053:
--------------------------------
    Summary: BigQuery Hook bug when data doesn't contain quoted values  (was: Change quote_character condition in BigQuery)

> BigQuery Hook bug when data doesn't contain quoted values
> ---------------------------------------------------------
>
>                 Key: AIRFLOW-2053
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-2053
>             Project: Apache Airflow
>          Issue Type: Bug
>          Components: gcp
>    Affects Versions: 1.9.0, 1.8.2
>            Reporter: Kaxil Naik
>            Assignee: Kaxil Naik
>            Priority: Minor
>             Fix For: Airflow 2.0, 2.0.0
>
>
> The BigQuery API states [here|https://cloud.google.com/bigquery/docs/reference/rest/v2/jobs] that :
> {quote}The value that is used to quote data sections in a CSV file. BigQuery converts the string to ISO-8859-1 encoding, and then uses the first byte of the encoded string to split the data in its raw, binary state. The default value is a double-quote ('"'). If your data does not contain quoted sections, set the property value to an empty string. {quote}
> But the [current implementation|https://github.com/apache/incubator-airflow/blob/6ee4bbd4b1bc4b3f275f7946e2bcdd123970e2dd/airflow/contrib/hooks/bigquery_hook.py#L802] `run_load ` in BigQuery hook has incorrect check to include `quote_character`.
> The code currently is:
> {code:python}
>         if 'fieldDelimiter' not in src_fmt_configs:
>             src_fmt_configs['fieldDelimiter'] = field_delimiter
>         if quote_character:
>             src_fmt_configs['quote'] = quote_character
>         if allow_quoted_newlines:
>             src_fmt_configs['allowQuotedNewlines'] = allow_quoted_newlines
> {code}
> If my data doesn't have quote characters as per BQ API docs I need to put `quote=''` i.e empty string. The above condition `if quote_character:` will return false for an empty string. Hence, I get the following error:
> ```
> {'message': 'Error detected while parsing row starting at position: 0. Error: Data between close double quote (") and field separator.', 'reason': 'invalid'}
> ```
> So, the condition should be :
> {code:python}
>         if quote_character is not None:
>             src_fmt_configs['quote'] = quote_character
> {code}
>  



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