Percona Customer Portal and Your New, Free User Account

Percona Customer Portal

Google, Microsoft, and Apple have it. So do open source organizations like MongoDB, Red Hat, and SUSE. What do all these companies provide? A customer portal that enables anyone to create an identity with the company. To date, Percona hasn’t had a customer portal with a free user account –  but that’s about to […]

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MongoDB 4.4 Performance Regression: Overwhelmed by Memory

MongoDB 4.4 Performance Regression

There is a special collection of database bugs when the system starts to perform worse when given more resources. Examples of such bugs for MySQL I have:
Bug #15815 – This is where InnoDB on an 8-CPU system performed worse than on a 4-CPU system with increased concurrency.
Bug #29847 – This is a similar bug […]

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Percona Server for MongoDB 4.2 vs 4.4 in Python TPCC Benchmark

Percona Server for MongoDB 4.2 vs. 4.4

Following my previous blogs on py-tpcc benchmark for MongoDB, Evaluating the Python TPCC MongoDB Benchmark and Evaluating MongoDB Under Python TPCC 1000W Workload, and the recent release of Percona Server for MongoDB 4.4, I wanted to evaluate 4.2 vs 4.4 in similar scenarios.
Hardware Specs
For the client and server, I will use identical bare metal servers, connected via […]

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How To Inject an Empty XA Transaction in MySQL

Inject an Empty XA Transaction in MySQL

If you are using XA transactions, then you’ve likely run into a few replication issues with the 2PCs (2 Phase Commits). Here is a common error we see in Percona’s Managed Services and a few ways to handle it, including injecting an empty XA transaction.

Shell

Last_Error: Error ‘XAER_NOTA: Unknown XID’ on query. Default database: ‘punisher’. Query: […]

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Announcing the Agenda for Percona Live ONLINE, 20-21 October 2020!

agenda percona live online

Today, we’re excited to announce the agenda for Percona Live ONLINE taking place on 20-21 October 2020.
As the conference could not go ahead in person in Amsterdam as planned, we have once again moved to an online format that saw more than 6,500 people join us over 24 hours for our May conference.
We’ll be […]

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