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From Shubham Gupta <>
Subject Start date and end date
Date Mon, 20 Aug 2018 00:11:11 GMT

Start date and end date are present both in BaseOperator class and DAG
class. I was wondering if both are specified, which of them takes

Also, I could not understand this comment in airflow source code in, related to start date:

>          'It is also very important
>         to note that different tasks' dependencies
>         need to line up in time. If task A depends on task B and their
>         start_date are offset in a way that their execution_date don't line
>         up, A's dependencies will never be met`

Can someone explain me what it means by an example?

Shubham Gupta

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