fix: handle unmapped task deadlock when upstream tasks are removed #56678
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kevinhongzl
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Is it possible to have a test case for this? |
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closes: #48816
related: #26518
While the issue of deadlock caused by removing upstream mapped tasks has been addressed in #26518, that PR only handled cases where the downstream tasks were also mapped. This PR addresses the task deadlock occurring on downstream unmapped tasks.
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