backend icon indicating copy to clipboard operation
backend copied to clipboard

Published 20 hours ago • verified publisher icon source-academy

Add `foreign_key_constraint` to Submission to convert to error instead of crashing

Open indocomsoft opened this issue 6 years ago • 0 comments

In find_or_create_submission

Due to race condition when the find_or_create_submission is called in very fast succession. Only one of the invocation will succeed in creating a new row in the db, the rest will fail with unique constraint error.

Relevant error: image image

indocomsoft avatar Aug 23 '18 07:08 indocomsoft