Do not crash with stacktrace when task instance is missing #19478
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When task instance was missing (because old dag runs did not have it) trying to run the missing task from the UI resulted in stacktrace rather than nice error message. Fixes: apache#19477
bbovenzi
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Nov 8, 2021
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The PR is likely OK to be merged with just subset of tests for default Python and Database versions without running the full matrix of tests, because it does not modify the core of Airflow. If the committers decide that the full tests matrix is needed, they will add the label 'full tests needed'. Then you should rebase to the latest main or amend the last commit of the PR, and push it with --force-with-lease. |
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When task instance was missing (because old dag runs did not have
it) trying to run the missing task from the UI resulted in
stacktrace rather than nice error message.
Fixes: #19477
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