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Posted to commits@airflow.apache.org by "Pierrick Boitel (Jira)" <ji...@apache.org> on 2019/08/23 14:08:00 UTC

[jira] [Created] (AIRFLOW-5295) DAG doesn't take the last value of XCOM

Pierrick Boitel created AIRFLOW-5295:
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             Summary: DAG doesn't take the last value of XCOM
                 Key: AIRFLOW-5295
                 URL: https://issues.apache.org/jira/browse/AIRFLOW-5295
             Project: Apache Airflow
          Issue Type: Bug
          Components: DAG
    Affects Versions: 1.10.3, 1.8.0
            Reporter: Pierrick Boitel


I have sometimes failure on my DAG and need to re-run some tasks. Some of these emits a new value for a XCOM, but when following tasks runs, they generally takes the old value for this XCOM (although the value is good in Airflow's database). In order to have the good value, I have to clear my tasks several time (more than 10 time sometimes) which is really painfull.

I suppose that the DAG on the scheduler keeps the value on cache but not sure on this. I didn't enable pickking for the JSON too.



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