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From "Timo (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AIRFLOW-154) Handle xcom parameters when running a single task
Date Fri, 20 May 2016 09:38:12 GMT
Timo created AIRFLOW-154:
----------------------------

             Summary: Handle xcom parameters when running a single task
                 Key: AIRFLOW-154
                 URL: https://issues.apache.org/jira/browse/AIRFLOW-154
             Project: Apache Airflow
          Issue Type: Wish
          Components: xcom
            Reporter: Timo
            Priority: Minor


What would be the correct way to handle xcom parameters when running a single task in a dag.
Simplified example:

task 1:
  - Push parameter

task 2:
  - Pull parameter from task 1
  - Push parameter

task 3:
  - Pull parameter from task 2

I would like to only run task 2 manually.
  1. Is it possible to specify any parameters from the commandline that would substitute the
xcom pull from task 1?
  2. What happens with the parameters pushed in task 2? Are they left behind somewhere?



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