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Displaying posts with tag: stack trace (reset)

Using the MySQL stack trace to isolate bugs
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I came across an interesting error reported on #mysql the other day. When I went through it with the reporter it looks like we uncovered up to two bugs in InnoDB (or rather XtraDB as it was Percona Server). I thought it might be useful to go through the error message, including the stack trace, to show that you don't need to be a developer to track down some useful information.

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A Quick Review of Stack Traces
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I'll try to pass on some basic knowledge about those confusing stack traces we sometimes see in the mysql error logs.  What can you tell from them, what are they useful for, and how to validate them?
Debugging Crashes
We tried to improve postmortem debugging of crashes + stack traces in the error log:o) old versions of mysqld only printed numerical numbers instead of function names (if you're lucky!)o) some platforms/architectures printed no stack trace what-so-ever!o)

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