21CTO

Nov 28, 2015 · Databases

Why MySQL Key Partition Queries Fail After Upgrade and How to Fix Them

This article examines several MySQL issues—including key partition hash algorithm changes causing data loss after upgrades, a client crash triggered by misdirected dump output, GTID_PURGED interactions that break AUTO_POSITION replication, and replicate‑do‑db filtering effects on GTID continuity—and provides concrete compatibility fixes and troubleshooting steps.