TL;DR: we still need MyISAM and myisampack because it uses less space on disk (half of compressed InnoDB) !
In the previous post, I shared my experience with InnoDB table compression on a read-only dataset. In it, I claimed, without giving much detail, that using MyISAM and myisampack would result is a more compact storage on disk. In this post, I will share more details about this claim.
In my last post about big MySQL deployments, I am quickly mentioning that InnoDB compression is allowing dividing disk usage by about 4.3 on a 200+ TiB dataset. In this post, I will give more information about this specific use case of InnoDB table compression and I will share some statistics and learnings on this system and subject. Note that I am not covering InnoDB page compression which is
MySQL theoretical limits are known and they can be found in the manual, they include:
MyISAM permits data and index files to grow up to 256 TiB by default, but this limit can be changed up to the maximum permissible size of 65,536 TiB (256^7 − 1 bytes). The maximum tablespace size depends on the InnoDB page size: 64 TiB for 16 KiB pages.(The maximum tablespace size is also the maximum size for a
This is old news for MySQL/MariaDB expert but people that are starting using InnoDB do not always know that disk space is not automatically released when deleting data from a table. To explain and demonstrate that, I will take two real-world examples: table1 and table2.
Recently, more than 90% and about 20% of rows were deleted from table1 and table2 (those tables contain real data, I only
Something interesting happened to me in the last days, and it is worth sharing. I was upgrading MariaDB (MySQL also impacted) to a new major version and mysql_upgrade showed something like this:
[...] Phase 4/7: Running 'mysql_fix_privilege_tables' ERROR 1062 (23000) at line 586: Duplicate entry 'schema-table_name#P#partition_name_truncated' for key 'PRIMARY' ERROR 1062 (23000) at line 590:
Join Percona’s Chief Evangelist, Colin Charles as he presents MariaDB Server 10.2: The Complete Guide on Tuesday, June 27, 2017, at 7:00 am PDT / 10:00 am EDT (UTC-7).
The new MariaDB Server 10.2 release is out. It has some interesting new features, but beyond just a list of features we need to understand how to use them. This talk will go over everything new that MariaDB 10.2 has to offer.
In this webinar, we’ll learn about Window functions, common table expressions, finer-grained CREATE USER statements, and more – including getting mysqlbinlog up to parity with MySQL. …
[Read more]Yes, another post about my talks at Percona Live Santa Clara: I obviously still have things to share. This time, I will focus on my parallel replication talks by giving a short preview.
I have two parallel replication talks at Percona Live:
MySQL/MariaDB Parallel Replication: inventory, use cases and limitations (Wednesday talk) MySQL Parallel Replication: all the 5.7 (and some of the 8.0)
In a previous post, I listed all the Booking.com talks at Percona Live. In this post, I will give more details about my talks.
As a reminder, the list of my talks is the following:
Monitoring Booking.com without looking at MySQL (Thursday keynote) The two little bugs that almost brought down Booking.com (Tuesday Lightning Talk) MySQL/MariaDB Parallel Replication: inventory, use cases and
In a week, me and some Booking.com colleagues will be in Santa Clara for Percona Live.
Booking.com is sponsoring the conference and we will be present at the Monday Evening Reception. You do not need a tutorial pass to attend the dinner (even if it is on the tutorial day): any valid pass will do. If you do not have your ticket yet, it is time to register (you can use the discount code “
In a few days, I will start my yearly travel to North America which will bring me at Percona Live at the end of the month. But I will first stop in New York to attend the MariaDB Developer Meeting. Let's see what will happen there.
Percona Live
Booking.com is sponsoring the conference, and we will be present at the Monday Evening Reception. You do not need a tutorial pass to attend: any
