Author - Marcelo Altmann

Say Hello to Libcoredumper – A New Way to Generate Core Dumps, and Other Improvements

Libcoredumper

In a perfect world, we expect all software to run flawlessly and never have problems such as bugs and crashes. We also know that this perfect world doesn’t exist and we better be as prepared as possible to troubleshoot those types of situations. Historically, generating core dumps has been a task delegated to the […]

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MySQL New Releases and Percona XtraBackup Incompatibilities

MySQL Percona Backup Incompatibilities

Earlier this week, Oracle released their Q4 releases series. As on the previous releases, backward compatibility has been broken with previous versions of the server. This time on both MySQL 5.7 and 8.0:
MySQL 5.7.32
While our QA team was performing an extensive test on it,  we found out this version introduced a new compression format […]

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Finding a Regression in MySQL Source Code: A Case Study

finding regression in mysql source

At the Percona engineering team, we often receive requests to analyze changes in MySQL/Percona Server for MySQL behavior from one version to another, either due to regression or a bug fix (when having to point out to a customer that commit X has fixed their issue and upgrading to a version including that fix […]

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Simulating InnoDB Secondary Index Corruption

InnoDB Secondary Index Corruption

Working as a support engineer here at Percona is amazing, as you get a variety of requests, ranging from the most trivial questions to questions that require source code review and understanding of the internals of InnoDB, for example.
In our world where High Availability is a must, everything is about being pro-active, and when […]

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