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Posted to commits@airflow.apache.org by "Francesco Macagno (JIRA)" <ji...@apache.org> on 2019/06/21 22:07:00 UTC

[jira] [Created] (AIRFLOW-4833) Jinja templating removes newlines

Francesco Macagno created AIRFLOW-4833:
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             Summary: Jinja templating removes newlines
                 Key: AIRFLOW-4833
                 URL: https://issues.apache.org/jira/browse/AIRFLOW-4833
             Project: Apache Airflow
          Issue Type: Bug
          Components: operators
    Affects Versions: 1.10.2
            Reporter: Francesco Macagno


When using an operator that has Jinja templating enabled for a field, if the field value ends with a newline then the newline is removed, regardless of whether there was a template in the string.

 

This came up when attempting to send data to Prometheus pushgateway using the SimpleHttpOperator. Pushgateway requires a newline at the end of every entry, so the removal of the newline at the end of the data parameter causes the request to fail in a way that is difficult to debug.

 

This can be gotten around by including a space after the newline character, though this is not a great solution. The space is ignored by pushgateway.



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