Lee-W commented on code in PR #47761:
URL: https://github.com/apache/airflow/pull/47761#discussion_r1995237936
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newsfragments/47761.significant.rst:
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+Old default values no longer auto-updated
+
+There are a few configuration options that had old default values that no
longer worked, so
+Airflow 2 would automatically update them on-the-fly to the new default
values. This is no longer
+the case, and users need to update their configuration files to the new
default values.
+
+The configuration options that were auto-updated in Airflow 2 are:
+
+- ``[core] hostname`` with value ``:``
+- ``[email] email_backend`` with value
``airflow.contrib.utils.sendgrid.send_email``
+- ``[logging] log_filename_template`` with value ``{{ ti.dag_id }}/{{
ti.task_id }}/{{ ts }}/{{ try_number }}.log``
+- ``[elasticsearch] log_id_template`` with value
``{dag_id}-{task_id}-{logical_date}-{try_number}``
+
+If you have these configuration options in your ``airflow.cfg`` file, you need
to update them.
+
+* Types of change
+
+ * [ ] Dag changes
+ * [x] Config changes
+ * [ ] API changes
+ * [ ] CLI changes
+ * [ ] Behaviour changes
+ * [ ] Plugin changes
+ * [ ] Dependency changes
+ * [ ] Code interface changes
+
+* Migration rules needed
+ * [ ] Remove ``[core] hostname`` configuration option from config if value
is ``:``
+ * [ ] Remove ``[email] email_backend`` configuration option from config if
value is ``airflow.contrib.utils.sendgrid.send_email``
Review Comment:
Instead of removing it, should we change it to
`airflow.providers.sendgrid.utils.emailer.send_email` instead
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