Fix IntegrityError 1062 race on assignment_grade get-or-create#1063
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ionparticle merged 3 commits intomasterfrom Feb 10, 2026
Merged
Fix IntegrityError 1062 race on assignment_grade get-or-create#1063ionparticle merged 3 commits intomasterfrom
ionparticle merged 3 commits intomasterfrom
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Handle duplicate key (user_id, assignment_id) when concurrent requests both create AssignmentGrade: catch MySQL 1062, rollback, re-fetch existing row, update grade, and commit. Applied to calculate_grade, calculate_group_grade, and calculate_grades.
Co-authored-by: Cursor <cursoragent@cursor.com>
… 22-char (no pading) UUID in api/file.py via _file_uuid() (same format as File.uuid).
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Handle duplicate key (user_id, assignment_id) when concurrent requests both create AssignmentGrade: catch MySQL 1062, rollback, re-fetch existing row, update grade, and commit. Applied to calculate_grade, calculate_group_grade, and calculate_grades.