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Posted to commits@airflow.apache.org by GitBox <gi...@apache.org> on 2019/04/06 05:47:50 UTC

[GitHub] [airflow] milton0825 commented on a change in pull request #5010: [AIRFLOW-4192] Reorganize task context variables

milton0825 commented on a change in pull request #5010: [AIRFLOW-4192] Reorganize task context variables
URL: https://github.com/apache/airflow/pull/5010#discussion_r272785021
 
 

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 File path: UPDATING.md
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 @@ -24,6 +24,24 @@ assists users migrating to a new version.
 
 ## Airflow Master
 
+### Some task context variables are removed
+The following task context variables are removed. Some are obsolete, some are duplicates whose 
+value is also given via other variables, and some are "derived" values from other variables which 
+are also given in the task context.
+
+* `yesterday_ds`: can be derived from `execution_date`
 
 Review comment:
   Can you also show the derivation here?

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