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From "Manning, Kieran (Consultant)" <Kieran.Mann...@consultant.renre.com>
Subject RE: Changing the crontab for a DAG
Date Tue, 25 Oct 2016 11:07:01 GMT
Unsure how I missed the line re: cron strings

Thanks!

-----Original Message-----
From: Gerard Toonstra [mailto:gtoonstra@gmail.com]
Sent: Tuesday, October 25, 2016 11:38 AM
To: dev@airflow.incubator.apache.org
Cc: David Batista <dba@hellofresh.com>
Subject: Re: Changing the crontab for a DAG

cron expressions:
https://airflow.incubator.apache.org/scheduler.html#dag-runs

On Tue, Oct 25, 2016 at 12:23 PM, Manning, Kieran (Consultant) < Kieran.Manning@consultant.renre.com>
wrote:

> Hi all,
>
> Sorry to piggyback on this question thread but I have something similar.
> We need to be able to schedule daily DAG runs with a configurable
> start time.
>
> Whatever start_date I provide, the actual start time seems to be set
> at midnight when the schedule is set to daily.
>
> Is there a means to change this?
>
> Thanks,
> Kieran
>
> -----Original Message-----
> From: wget.null@gmail.com [mailto:wget.null@gmail.com]
> Sent: Tuesday, October 25, 2016 11:10 AM
> To: David Batista <dba@hellofresh.com>;
> dev@airflow.incubator.apache.org
> Subject: RE: Changing the crontab for a DAG
>
> Hi David,
>
> For me worked:
> 1. Disable the DAG
> 2. Refresh
> 3. Edit the schedule_interval
> 4. Refresh the DAG
> 5. Enable
>
> You also should edit the start_date to avoid backfilled runs.
>
> --alex
>
> --
> B: mapredit.blogspot.com
>
> From: David Batista
> Sent: Tuesday, October 25, 2016 11:48 AM
> To: dev@airflow.incubator.apache.org
> Subject: Changing the crontab for a DAG
>
> Hi everyone,
>
> Just a quick question, if you have a running DAG (i.e., runs daily for
> instance), and at a certain point you want to update the crontab, for
> instance, change the hour on which it runs.
>
> Usually, want I do, is to clear all the past tasks with the old
> crontab, and update the the start_date of the DAG, to be equal to the
> day when the the hour changed.
>
> Nevertheless, sometimes, it happens that the DAG starts running with
> the old hour (before the change)
>
> What is the best way to deal with this, changing, let's say the hour,
> for a running a DAG?
>
> Best regards,
> David Batista
>
> --
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