4129
MariaDBERRORNotableHIGH confidence
Thread stack overrun during query execution
Production Risk
Medium — The query fails; if in a stored program, the program terminates with an error.
Why it happens
- 1A stored procedure or function with deep or infinite recursion.
- 2An extremely complex query with deeply nested subqueries.
- 3thread_stack variable is set too low for the workload.
Fix 1
Increase thread_stack in my.cnf
Why this works
Setting thread_stack=512K or higher provides more stack space per thread.
Fix 2
Reduce recursion depth in stored programs
Why this works
Refactor recursive stored programs to use iteration or limit recursion depth with max_sp_recursion_depth.
What not to do
✕
Sources
Official documentation ↗
MySQL 8.0 — 4129 ER_STACK_OVERRUN2
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