dstandish commented on code in PR #46501:
URL: https://github.com/apache/airflow/pull/46501#discussion_r1944154822


##########
airflow/dag_processing/bundles/base.py:
##########
@@ -67,6 +70,10 @@ def initialize(self) -> None:
         and allows for deferring expensive operations until that point in 
time. This will
         only be called when Airflow needs the bundle files on disk - some uses 
only need
         to call the `view_url` method, which can run without initializing the 
bundle.
+
+        This method must be safe to call concurrently from different threads 
or processes.
+        If the underlying implementation is not safe, the `lock` context 
manager can be used to
+        ensure that only one thread or process is initializing the bundle at a 
time.

Review Comment:
   The language is a bit contradictory.  On one hand you say that the method 
_must be thread safe / concurrent safe_.  But then you say, "if it is _not_ 
safe....".  So, in reality I think you mean, it doesn't have to be safe, but if 
it's not safe, must use the locking interface that you provide here.



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