ashb opened a new pull request, #56010:
URL: https://github.com/apache/airflow/pull/56010
With some recent changes LocalExec was now able to start a task _too
quickly_,
and due to it's custom implementation of `queue_workload` it was directly
sending the message to the MP queue the task in queue_workload, which means
if
there is an idle worker process already it will pick it up "instantly" --
crucially before the database transaction in with TI.state is changed from
scheduled to queued, is committed!
The fix here is to correctly follow the BaseExecutor interface, and not start
send the workloads for processing until heartbeat is called (which happens in
the scheduler right after the transaction is committed.)
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