[jira] [Resolved] (AIRFLOW-915) Allow task context to be modified by pre_execute hook

["Ash Berlin-Taylor (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AIRFLOW-915?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ash Berlin-Taylor resolved AIRFLOW-915.
---------------------------------------
    Fix Version/s: 1.10.7
       Resolution: Fixed

I think this change that enables this was first included in 1.10.7 (it might be in 1.10.6)

> Allow task context to be modified by pre_execute hook
> -----------------------------------------------------
>
>                 Key: AIRFLOW-915
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-915
>             Project: Apache Airflow
>          Issue Type: Improvement
>          Components: operators
>    Affects Versions: 1.8.0
>            Reporter: Jeremiah Lowin
>            Assignee: Paul Rhodes
>            Priority: Minor
>             Fix For: 1.10.7
>
>
> Currently, Operators do two things that prevent the pre_execute hook from modifying the jinja context:
> 1. the Operator templates are rendered immediately BEFORE calling pre_execute
> 2. even though a context was already generated for the operator, the context is regenerated for template rendering, meaning that modifications to the operator context wouldn't matter anyway.
> The proper course of events should be:
> 1. generate operator context
> 2. pass context to pre_execute where it could (potentially) be modified
> 3. use that context to render operator templates



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