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From GitBox <...@apache.org>
Subject [GitHub] ron819 closed pull request #4075: [AIRFLOW-502] BashOperator success/failure conditions not documented
Date Wed, 14 Nov 2018 08:22:36 GMT
ron819 closed pull request #4075: [AIRFLOW-502] BashOperator success/failure conditions not
documented
URL: https://github.com/apache/incubator-airflow/pull/4075
 
 
   

This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:

As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):

diff --git a/airflow/operators/bash_operator.py b/airflow/operators/bash_operator.py
index f9c2e1bbc0..1cdf8ed717 100644
--- a/airflow/operators/bash_operator.py
+++ b/airflow/operators/bash_operator.py
@@ -49,6 +49,16 @@ class BashOperator(BaseOperator):
     :type env: dict
     :param output_encoding: Output encoding of bash command
     :type output_encoding: str
+    
+    On execution of the operator the task will up for retry when exception is raised.
+    However if a sub-command exists with non-zero value Airflow will not recognize
+    it as failure unless the whole shell exits with a failure. The easiest way of 
+    achieving this is to prefix the command with ``set -e;`` 
+    Example:
+        bash_command = "python3 script.py '{{ next_execution_date }}'"
+        when executing command exit(1) the task will be marked as success.
+        bash_command = "set -e; python3 script.py '{{ next_execution_date }}'"
+        when executing command ``exit(1)`` the task will be marked as up for retry.
     """
     template_fields = ('bash_command', 'env')
     template_ext = ('.sh', '.bash',)


 

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