o-nikolas opened a new pull request, #53396:
URL: https://github.com/apache/airflow/pull/53396
The lambda executor uses a single shared SQS queue as a results backend (of
sorts) to receive results from the Lambda invocations. Previously if Lambda
Executor A read an event which contained a task started by Lambda Executor B it
would delete the message as unrecognized. Now properly formatted messages are
returned to the queue for the correct executor to pull (ill formatted messages
are still deleted). UAT testing has show that this simple solution actually
stabilizes quite quickly especially since executors with no running tasks do
not query the queue. If we see any further scaling issues in the future we can
revisit this with a more complex solution.
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