tirkarthi opened a new pull request, #22754:
URL: https://github.com/apache/airflow/pull/22754

   When the task instance is executed it fetches variables accessed in template 
and during variable access calls `mask_secret` add filter for secret variables. 
It also creates new `RenderedTaskInstanceFields` where the masked values are 
stored by calling `redact`. Subsequent rendering of executed tasks use 
`RenderedTaskInstanceFields` and redacted values. 
   
   When the task instance is not executed and when we try to render then 
`RenderedTaskInstanceFields` is not created and rendering template calls 
`mask_secret` to add filters but the output itself is not masked. So we have to 
use `RenderedTaskInstanceFields` where initialization does template rendering 
and also masks secrets.
   
   closes: #22738
   related: #22738
   
   
   Read the **[Pull Request 
Guidelines](https://github.com/apache/airflow/blob/main/CONTRIBUTING.rst#pull-request-guidelines)**
 for more information.
   In case of fundamental code change, Airflow Improvement Proposal 
([AIP](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvements+Proposals))
 is needed.
   In case of a new dependency, check compliance with the [ASF 3rd Party 
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   In case of backwards incompatible changes please leave a note in 
[UPDATING.md](https://github.com/apache/airflow/blob/main/UPDATING.md).
   


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