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https://issues.apache.org/jira/browse/AIRFLOW-1772?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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sam elamin updated AIRFLOW-1772:
--------------------------------
    Description: 
Hi

I noticed that the [Update 
Sensor|https://github.com/apache/incubator-airflow/blob/master/airflow/contrib/sensors/gcs_sensor.py#L73]
 does not work with a cron expression set as the schedule interval

According to the airflow docs a scheduler interval can be a timedelta or a 
string

When its a cron expression the schedule is a string and hence this [line | 
https://github.com/apache/incubator-airflow/blob/master/airflow/contrib/sensors/gcs_sensor.py#L70]
 breaks 


the error is below

''str' object is not callable'

Ideally that line should check if the interval is a cron expression and if it 
is convert it to a time delta 



  was:
Hi

I noticed that the [Update 
Sensor|https://github.com/apache/incubator-airflow/blob/master/airflow/contrib/sensors/gcs_sensor.py#L73]
 does not work with a cron expression set as the schedule interval

According to the airflow docs a scheduler interval can be a timedelta or a 
string

When its a cron expression the schedule is a string and hence this [line | 
https://github.com/apache/incubator-airflow/blob/master/airflow/contrib/sensors/gcs_sensor.py#L70](
 breaks 


the error is below

''str' object is not callable'

Ideally that line should check if the interval is a cron expression and if it 
is convert it to a time delta 




> Google Updated Sensor doesnt work with CRON expressions 
> --------------------------------------------------------
>
>                 Key: AIRFLOW-1772
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-1772
>             Project: Apache Airflow
>          Issue Type: Bug
>          Components: gcp
>            Reporter: sam elamin
>            Priority: Normal
>
> Hi
> I noticed that the [Update 
> Sensor|https://github.com/apache/incubator-airflow/blob/master/airflow/contrib/sensors/gcs_sensor.py#L73]
>  does not work with a cron expression set as the schedule interval
> According to the airflow docs a scheduler interval can be a timedelta or a 
> string
> When its a cron expression the schedule is a string and hence this [line | 
> https://github.com/apache/incubator-airflow/blob/master/airflow/contrib/sensors/gcs_sensor.py#L70]
>  breaks 
> the error is below
> ''str' object is not callable'
> Ideally that line should check if the interval is a cron expression and if it 
> is convert it to a time delta 



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