Online schema changes for maximizing uptime

Database Administration
2 April 11:30AM - 12:20PM @ Ballroom E

Experience level: 
50 minutes conference
Whether adding indexes, altering enums, changing datatypes or reorganizing tables - there are right and wrong ways when production is involved. In this session, we will go over common operations implemented in production, discuss their impacts, and appropriate strategies for minimizing downtime and customer impact to systems. * Fast operations including index adds and enum list changes (and gotchas!) * Online schema changes using current production utilities such as Facebook OSC and PT-Online-Schema-Change * Rolling Migrations and Upgrades * Impacts of replication on DDL changes * Things to look out for when changing your schemas. * Coverage of OSC in MySQL 5.6


Storage SRE, Uber
David Turner joined Uber in 2016. He has more than 10 years experience working with databases such as Oracle and MySQL. He was drawn to MySQL because of his interest in database internals and a deeper understanding of systems architecture. With MySQL he has found he has more freedom to explore. His experience in working at larger shops such as Dropbox, Facebook, Pinterest, Sprint, and Zendesk has given him a strong understanding of scaling issues and of managing massive amounts of data and databases.
DBA, Tango
For the past 15 years, Ben has been a DBA, developer, and Sys Admin working on high volume production systems at Garmin, PalominoDB, and Tango.