Jan 30, 2019
 Percona Technical Webinar
  Alkin Tezuysal, Krunal Bauskar

Percona XtraDB Cluster (a.k.a PXC) is an open source, multi-master, high availability MySQL clustering solution. PXC works with your MySQL / Percona Server-created database. Given the multi-master aspect, there are multi-guards to protect a cluster from entering an inconsistent state. Most of these guards are configurable based on their user environment. However, if they are not configured properly they could cause the cluster to stall, fail or error-out.

In this session, we’ll discuss failure scenarios, including a MySQL cluster entering a non-primary state due to network partitioning. We’ll also discuss a cluster stall due to flow control, data inconsistency causing the shutdown of a node and common problems during the initial catch up – a.k.a State Snapshot Transfer (SST). Other issues include delays in the purging of a transaction, a blocking DDL causing the entire cluster to stall and a misconfigured cluster.

We will also go over how to solve some of these problems and how to safely recover from these failures.

About the Authors

Alkin Tezuysal

Alkin has extensive experience in enterprise relational databases working in various sectors for large corporations. With more then 20 years of industry experience he has acquired skills for managing large projects from ground up to production. For the past six years he's been focusing on e-commerce, SaaS and MySQL technologies. He managed and architected database topologies for high volume site at eBay Intl. He has several years of experience on 24X7 support and operational tasks as well as improving database systems for major companies. He has led MySQL global operations team on Tier 1/2 support for MySQL customers. Recently joined Percona's expert technical management team.



Krunal Bauskar

Krunal joined Percona in September 2015. Before joining Percona he use to work as part of InnoDB team at MySQL/Oracle. He authored most of the temporary table revamp work besides lot of other features. In past he was associated with Yahoo! Labs researching on bigdata problems and database startup which is now part of Teradata. His interest mainly includes data-management at any scale and has been practicing it for more than decade now. He love to spend time with his family or get involved in some social work helping his society unless he is out for some near-by exploration drive. He is located out of Pune, India.