ITPUB

Jun 28, 2017 · Databases

Why MySQL Replication Shows ‘Duplicate Primary’ Errors – Binlog, Auto‑Increment & Trigger Insights

During synchronization from MySQL 5.0 to 5.7, a slave worker raised a ‘duplicate primary’ error; the article examines binlog statements, auto‑increment values, and a problematic trigger, walks through various debugging attempts, and concludes that removing the trigger resolves the issue despite unclear root cause.