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Dependency metrics tasks (process_dependency_metrics, process_libyear_dependency_metrics, process_scc_value_metrics) were placed inside a Celery group() alongside the facade core collection chain, causing them to fire concurrently with the git clone/update. This resulted in a FileNotFoundError when the tasks tried to scan directories that hadn't been written to disk yet. Fix: append the three tasks to facade_core_collection and use a single chain() so they execute strictly after the clone completes. Fixes #3767 Signed-off-by: mn-ram <mn-ram@users.noreply.github.com>
Adds two unit tests for facade_phase() to guard against the race condition fixed in the previous commit (issue #3767): 1. test_facade_phase_returns_chain - verifies the returned sequence is not a Celery group(), which would dispatch tasks in parallel. 2. test_facade_phase_dependency_tasks_follow_clone - verifies that process_dependency_metrics, process_libyear_dependency_metrics, and process_scc_value_metrics appear strictly after the git clone task in the chain, not before or alongside it. All Augur/DB dependencies are stubbed so no live environment is needed. Signed-off-by: mn-ram <mn-ram@users.noreply.github.com>
Contributor
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#3796 may help reduce the race condition |
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Author
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@MoralCode Thanks for the heads up! |
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Description
process_dependency_metrics,process_libyear_dependency_metrics, andprocess_scc_value_metricsout of Celerygroup()and into the mainfacade_core_collectionchain so they execute strictly after the git clone/update completes.groupimport fromcelery.This PR fixes #3767 (also resolves #3459 — same root cause)
Notes for Reviewers
group()dispatches all members simultaneously, so dependency tasks were racing against the git clone and hittingFileNotFoundErroron directories that didn't exist yet. Using a singlechain()guarantees ordering with no extra overhead.Signed commits