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https://issues.apache.org/jira/browse/AIRFLOW-4139?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chao-Han Tsai updated AIRFLOW-4139:
-----------------------------------
    Description: 
Currently, running DagRun will be impacted if we change the DAG file in the 
middle of the run. After we have 
https://cwiki.apache.org/confluence/display/AIRFLOW/AIP-5+Remote+DAG+Fetcher 
and https://cwiki.apache.org/confluence/display/AIRFLOW/AIP-20+DAG+manifest 
ready, we can start saving each version of the DAG file on the remote system 
and the running tasks should refer to a specific version of DAG instead of the 
latest DAG.

How is it different from 

  was:Currently, running DagRun will be impacted if we change the DAG file in 
the middle of the run. After we have 


> DAG versioning
> --------------
>
>                 Key: AIRFLOW-4139
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-4139
>             Project: Apache Airflow
>          Issue Type: New Feature
>            Reporter: Chao-Han Tsai
>            Assignee: Chao-Han Tsai
>            Priority: Major
>
> Currently, running DagRun will be impacted if we change the DAG file in the 
> middle of the run. After we have 
> https://cwiki.apache.org/confluence/display/AIRFLOW/AIP-5+Remote+DAG+Fetcher 
> and https://cwiki.apache.org/confluence/display/AIRFLOW/AIP-20+DAG+manifest 
> ready, we can start saving each version of the DAG file on the remote system 
> and the running tasks should refer to a specific version of DAG instead of 
> the latest DAG.
> How is it different from 



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