build: collect per-test timing data via --report-log#38287
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build: collect per-test timing data via --report-log#38287
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Run pytest with extra reporting enabled to generate files with per-test durations. The file is uploaded as a CI artifact so timing data can be downloaded and used to drive optimal shard rebalancing. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Redistribute test paths across 9 shards (down from 16) using a greedy bin-packing optimiser driven by real per-test timing data from pytest-reportlog. Predicted critical path: ~18.7m (down from ~29m). Key changes: - Rename shard groups to reflect semantic meaning: lms-*, shared-with-lms-*, shared-with-cms-*, cms-* (openedx/common/xmodule paths explicitly separated from lms-only and cms-only paths) - Split lms/djangoapps/discussion/ into its 4 subdirectories so the heavy rest_api/ shard (15.7m) can be distributed across bins independently - Remove outdated comment referencing unit-tests-gh-hosted.yml Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
--report-logto the pytest invocation inunit-tests.ymlso each shard emits a JSONL file with per-test durations