Aug 30, 2021 · Databases

Changes in MySQL Internal Temporary Table Storage from 5.6 to 8.0

This article explains how MySQL handles internal temporary tables, detailing the evolution of storage mechanisms and related parameters from version 5.6 through 5.7 to 8.0, including the shift to TempTable, shared session temporary tables, memory‑mapped files, and configuration tips to avoid space issues.

ConfigurationTempTableinternal temporary tables

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Changes in MySQL Internal Temporary Table Storage from 5.6 to 8.0

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Apr 27, 2020 · Databases

Why MySQL 8.0.15 Leaks Internal Temp Files and How Upgrading to 8.0.16 Fixes It

A production MySQL 8.0.15 MGR cluster suffered from massive internal temporary‑table file leaks due to a known bug, which was diagnosed through log analysis and Oracle documentation and resolved by upgrading to MySQL 8.0.16, confirming the issue is version‑specific and not MGR‑related.

MGRbuginternal temporary tables

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Why MySQL 8.0.15 Leaks Internal Temp Files and How Upgrading to 8.0.16 Fixes It