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https://issues.apache.org/jira/browse/AIRFLOW-4163?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chao-Han Tsai updated AIRFLOW-4163:
-----------------------------------
    Description: 
IntervalCheckOperator takes max/min ratio of two values for a metric and 
returns true if it is less than threshold.

The bug is if one of the values is 0, it assigns the ratio as None. In python 
comparison None < Number is always true. We should change that to fail the test

Also we should support calculating ratio with relative difference.

  was:
IntervalCheckOperator takes max/min ratio of two values for a metric and 
returns true if it is less than threshold.

The bug is if one of the values is 0, it assigns the ratio as None. In python 
comparison None < Number is always true. We should change that to fail the test


>  IntervalCheckOperator support relative difference ratio
> --------------------------------------------------------
>
>                 Key: AIRFLOW-4163
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-4163
>             Project: Apache Airflow
>          Issue Type: Bug
>            Reporter: Chao-Han Tsai
>            Assignee: Chao-Han Tsai
>            Priority: Major
>
> IntervalCheckOperator takes max/min ratio of two values for a metric and 
> returns true if it is less than threshold.
> The bug is if one of the values is 0, it assigns the ratio as None. In python 
> comparison None < Number is always true. We should change that to fail the 
> test
> Also we should support calculating ratio with relative difference.



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