0
MariaDB:The New M
in LAMP?
Colin Charles, Monty Program Ab SkySQL
byte@mariadb.com / colin@mariadb.org
http://skysql.com/ ...
whoami
• MariaDB guy at Monty Program Ab
• SkySQL merges with Monty Program Ab
• MariaDB Server is at MariaDB
Foundation
•...
Agenda
• 40 months: major server releases (5.1, 5.2,
5.3, 5.5, Galera Cluster) and 10.0 series
• Delving into history of p...
What is MariaDB?
• Community developed branch of MySQL
• Feature enhanced
• Fully compatible & feature complete with
MySQL
Ownership
• MySQL (database) owned by MySQL AB
(company) -> Sun -> Oracle
• Monty Program is a major sponsor of
MariaDB
• ...
Aims of MariaDB
• Compatible, drop-in replacement to
MySQL
• data on disk & on the wire the same
• same file names, sockets...
Why MariaDB 10.0?
• The 5.5 merge took about a year (!)
• In MariaDB 5.5, we have over 1.5 million lines
of extra code ~61...
MariaDB 10.0 in a
nutshell
• Built on MariaDB 5.5
• Backported features from MySQL 5.6
• Multiple new features
First, let’s start with
some history
• MariaDB 5.1 (MySQL 5.1 base)
• Table elimination, new storage engines,
code cleanup...
History II
• MariaDB 5.3 (MariaDB 5.2 base)
• Biggest changes to optimizer (faster subqueries, joins,
etc.)
• Microsecond ...
MariaDB 5.5 (MariaDB
5.3 + MySQL 5.5)
• Opensource, more efficient threadpool
• Non-blocking client library
• New LIMIT ROW...
MariaDB 10.0
Date Version Status
12 Nov
2012
10.0.0 Alpha
6 Feb
2013
10.0.1 Alpha
24 Apr
2013
10.0.2 Alpha
11 Jun
2013
10....
Backported features
• InnoDB including TRANSACTION READ ONLY
• PERFORMANCE_SCHEMA
• Online ALTER TABLE (in-progress)
• Opt...
Only in MariaDB 10.0:
Multi-source replication
• Work from Taobao
• Many users partition data across many
masters... now y...
Only in MariaDB 10.0
• SHOW EXPLAIN for <thread_id> gets the query
plan for a running statement
• Faster ALTER TABLE with ...
Only in MariaDB 10.0:
CassandraSE, LevelDB support
• MariaDB as a “data platform”
• Integration with NoSQL/Big Data DB,Apa...
Only in MariaDB 10.0: Engine
independent persistent statistics
• InnoDB has persistent statistics in MySQL
5.6; we have an...
Dynamic columns
• Store a different set of columns for every
row in the table in a blob (kinda NoSQL-like)
• Basically a b...
Segmented MyISAM
keycache
• Solves major read bottlenecks for MyISAM
• MyISAM usage with many readers
Subqueries materialise
• Semi-join optimization, materialization for
non-correlated IN queries, subquery cache
• Goodbye r...
Group commit in the
binary log
Source: Mark Callaghan,August 2011, https://
www.facebook.com/note.php?note_id=101502616924...
Threadpool 5.5 vs 5.1
PAM Authentication
• Authentication using /etc/shadow
• Authentication using LDAP, SSH pass phrases, password
expiration, ...
SphinxSE
• CREATE TABLE t1 (..)
ENGINE=SPHINX
CONNECTION=”sphin
x://localhost:9312/test”;
• Engine connects to
Sphinx sear...
GIS support!
• MySQL has OpenGIS SFS (Simple feature
access, SQL access method)
• Now, SQL with full geometry types
• ST_ ...
MariaDB 10.0.2
• Support for atomic writes on FusionIO
DirectFS
• Optimizer collects & can use histogram-
based statistics...
Roadmap
• MariaDB is already a superset of features in MySQL
• Merge is in 2 steps
• 10.0.x
• 10.1.x
• Plan is to have all...
LGPL Client Libraries
• LGPL client libraries for C & Java
• Works with MariaDB/MySQL/Percona
Server
• Developed by Monty ...
MariaDB Galera
Cluster
• MariaDB Galera Cluster is made for today’s
cloud based environments. It is fully read-
write scal...
TokuDB
• It’s now opensource
• Improved insert & query speed,
compression, replication performance and
online schema flexib...
CONNECT Storage
Engine
• Made by Olivier Bertrand
• Read, write & update files in different storage formats:
• .DBF (dBASE ...
Benchmarks
• “Lies, damned lies, and statistics” - Mark Twain
• http://blog.mariadb.org/sysbench-oltp-
mysql-5-6-vs-mariad...
Continued
commitments
• Security
• Since about a year now, we’re the go-to people for security - good
track record
• We do...
Community
involvement
• Many features since MariaDB 5.2 have come from
the community or are sponsored features (5.3, 5.5)
...
MariaDB is gaining
popularity
• Wikipedia (English, German),Wikidata running
MariaDB 5.5
• Fedora, OpenSUSE, RHEL7 shippin...
Deployments!
“MariaDB had these same bugs that we ran into with
MySQL. However the big difference was that when we
reporte...
MariaDB Foundation
• Foundation is driver of MariaDB project
• Custodian of code, guardian of community
• Foundation can n...
MariaDB Foundation
Goals
• Increase adoption of MariaDB
• Ensure sustainable high-quality efforts to build,
test and distr...
Coming up next
• Merge SPIDER storage engine
• Column level encryption via MyDiamo
from Penta Security
• New optimizations...
Well supported
• Everyone supports MariaDB from a
support standpoint with the exception of
Oracle
• SkySQL, Percona, etc.
...
User stats plugin
• Disabled by default, consider enabling it to
show use! http://mariadb.org/feedback_plugin/
data from o...
Compatibility with
MySQL
• No NDB Cluster
• XtraDB enabled as default up to 5.5,
InnoDB in 10.0 (for now)
• Optimizer: no ...
FAQ
• Can I replicate from MySQL 5.6 to MariaDB 10.x?
• Yes
• Can I replicate from MariaDB 10.x to MariaDB
5.5?
• Yes
• Ca...
FAQ on tools
• SELECTVERSION() returns 10.0.1-
MariaDB
• Version string in handshake packet will be
5.5.30-mysql-10.0.2-Ma...
Conclusion
• We’ve spent a lot of time adding features,
some in parallel, some ahead
• MariaDB is binary compatible with M...
Resources
• bugs: mariadb.org/jira
• maria-discuss@lists.launchpad.net
• maria-developers@lists.launchpad.net
• fb.com/Mar...
Q&A
byte@mariadb.com | colin@mariadb.org
http://skysql.com/ | http://mariadb.org/
twitter: @bytebot | url: http://bytebot....
Window to other
worlds
• HandlerSocket
• Dynamic columns
• memcached access to InnoDB/NDBCLUSTER
• node.js connector (JS) to InnoDB, NDBCLUSTER
•...
MariaDB at the MySQL Meetup San Francisco: why cant we get along
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MariaDB at the MySQL Meetup San Francisco: why cant we get along

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Overview talk of how MariaDB deals with the MySQL ecosystem. Presented in San Francisco at the MySQL Meetup group, held at Wikia.

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Transcript of "MariaDB at the MySQL Meetup San Francisco: why cant we get along"

  1. 1. MariaDB:The New M in LAMP? Colin Charles, Monty Program Ab SkySQL byte@mariadb.com / colin@mariadb.org http://skysql.com/ | http://mariadb.org/ http://bytebot.net/blog/ | @bytebot on Twitter MySQL Meetup, San Francisco, CA, USA 17 June 2013
  2. 2. whoami • MariaDB guy at Monty Program Ab • SkySQL merges with Monty Program Ab • MariaDB Server is at MariaDB Foundation • Formerly MySQL AB/Sun Microsystems • Past lives include Fedora Project (FESCO), OpenOffice.org
  3. 3. Agenda • 40 months: major server releases (5.1, 5.2, 5.3, 5.5, Galera Cluster) and 10.0 series • Delving into history of previous releases • MariaDB 10.0 • Client libraries, Galera Cluster • Roadmap
  4. 4. What is MariaDB? • Community developed branch of MySQL • Feature enhanced • Fully compatible & feature complete with MySQL
  5. 5. Ownership • MySQL (database) owned by MySQL AB (company) -> Sun -> Oracle • Monty Program is a major sponsor of MariaDB • MariaDB governed by MariaDB Foundation • maria-captains contains community like Sphinxsearch, LinkedIn, SkySQL,Taobao, Facebook, Percona, Codership, & more
  6. 6. Aims of MariaDB • Compatible, drop-in replacement to MySQL • data on disk & on the wire the same • same file names, sockets, port • Stable (bug-free) releases with no regressions • GPLv2
  7. 7. Why MariaDB 10.0? • The 5.5 merge took about a year (!) • In MariaDB 5.5, we have over 1.5 million lines of extra code ~61MB diff • MySQL 5.6 refactored with huge losses in commit history • We’re not a patch set against MySQL • MariaDB clearly does not depend on MySQL for future development
  8. 8. MariaDB 10.0 in a nutshell • Built on MariaDB 5.5 • Backported features from MySQL 5.6 • Multiple new features
  9. 9. First, let’s start with some history • MariaDB 5.1 (MySQL 5.1 base) • Table elimination, new storage engines, code cleanup, more test cases, pool of threads • MariaDB 5.2 (MariaDB 5.1 base) • Virtual columns, extended user statistics, segmented MyISAM keycache
  10. 10. History II • MariaDB 5.3 (MariaDB 5.2 base) • Biggest changes to optimizer (faster subqueries, joins, etc.) • Microsecond precision • Faster HANDLER (HANDLER READ 50% faster w/ 530,000 qps), dynamic columns, HandlerSocket • Better replication (group commit, checksum for binlog events, consistent snapshot between engines, etc.) • Progress reporting for ALTER TABLE/LOAD DATA INFILE
  11. 11. MariaDB 5.5 (MariaDB 5.3 + MySQL 5.5) • Opensource, more efficient threadpool • Non-blocking client library • New LIMIT ROWS EXAMINED option • Extended keys for XtraDB/InnoDB • New SphinxSE • Lots of security fixes, new status variables, etc.
  12. 12. MariaDB 10.0 Date Version Status 12 Nov 2012 10.0.0 Alpha 6 Feb 2013 10.0.1 Alpha 24 Apr 2013 10.0.2 Alpha 11 Jun 2013 10.0.3 Alpha
  13. 13. Backported features • InnoDB including TRANSACTION READ ONLY • PERFORMANCE_SCHEMA • Online ALTER TABLE (in-progress) • Optimizer • ORDER BY...LIMIT optimization (shows only few rows of a result set) • Re-implemented: • Error messages (w/system error string) • CURRENT_TIMESTAMP as DEFAULT for DATETIME columns • Global Transaction ID (10.0.2 - MDEV-26) • Parallel replication (in progress) • New (optimizer) • EXISTS-TO-IN optimization
  14. 14. Only in MariaDB 10.0: Multi-source replication • Work from Taobao • Many users partition data across many masters... now you can replicate many masters to a single slave • Great for analytical queries, complete backups, etc.
  15. 15. Only in MariaDB 10.0 • SHOW EXPLAIN for <thread_id> gets the query plan for a running statement • Faster ALTER TABLE with unique keys for Aria & MyISAM • Per-thread memory usage (Taobao) • INFORMATION_SCHEMA.PROCESSLIST has MEMORY_USAGE & EXAMINED_ROWS now • SHOW STATUS has memory usage too
  16. 16. Only in MariaDB 10.0: CassandraSE, LevelDB support • MariaDB as a “data platform” • Integration with NoSQL/Big Data DB,Apache Cassandra cluster, seen as a storage engine to MariaDB • Combine (join) data between Cassandra & MariaDB & Oracle (via CONNECT) • Write to Cassandra from SQL (SELECT, INSERT, UPDATE, DELETE) • LevelDB (in-progress)
  17. 17. Only in MariaDB 10.0: Engine independent persistent statistics • InnoDB has persistent statistics in MySQL 5.6; we have an engine-independent version • These statistics aren’t limited by the SE API, and are used by query optimizer to choose best execution plan for each statement • Statistics collected for non-indexed columns too (unlike InnoDB’s)
  18. 18. Dynamic columns • Store a different set of columns for every row in the table in a blob (kinda NoSQL-like) • Basically a blob with handling functions (GET, CREATE,ADD, DELETE, EXISTS, LIST, JSON) • Dynamic columns can be nested • Can now request a row in JSON format • And yes, you can name columns finally ;)
  19. 19. Segmented MyISAM keycache • Solves major read bottlenecks for MyISAM • MyISAM usage with many readers
  20. 20. Subqueries materialise • Semi-join optimization, materialization for non-correlated IN queries, subquery cache • Goodbye rewriting as JOINs or separate queries
  21. 21. Group commit in the binary log Source: Mark Callaghan,August 2011, https:// www.facebook.com/note.php?note_id=10150261692455933
  22. 22. Threadpool 5.5 vs 5.1
  23. 23. PAM Authentication • Authentication using /etc/shadow • Authentication using LDAP, SSH pass phrases, password expiration, username mapping, logging every login attempt, etc. • INSTALL PLUGIN pam SONAME ‘auth_pam.so’; • CREATE USER foo@host IDENTIFIED via pam • Remember to configure PAM (/etc/pam.d or /etc/ pam.conf)
  24. 24. SphinxSE • CREATE TABLE t1 (..) ENGINE=SPHINX CONNECTION=”sphin x://localhost:9312/test”; • Engine connects to Sphinx searchd • Let indexing, searching, sorting, filtering be performed by Sphinx • instead of WHERE, ORDER BY, LIMIT • Sphinx is optimized/ fast for these tasks • Most of the Sphinx API is exposed to engine • JOIN search table with other MySQL tables
  25. 25. GIS support! • MySQL has OpenGIS SFS (Simple feature access, SQL access method) • Now, SQL with full geometry types • ST_ prefix • http://kb.askmonty.org/en/gis-features- in-533
  26. 26. MariaDB 10.0.2 • Support for atomic writes on FusionIO DirectFS • Optimizer collects & can use histogram- based statistics for non-indexed columns • Better table discovery, so FederatedX has assisted discovery
  27. 27. Roadmap • MariaDB is already a superset of features in MySQL • Merge is in 2 steps • 10.0.x • 10.1.x • Plan is to have all important features of MySQL 5.6 by the time MariaDB 10.1.x is released as stable • For all practical purposes MariaDB 10.1.x will be a drop in replacement to MySQL 5.6
  28. 28. LGPL Client Libraries • LGPL client libraries for C & Java • Works with MariaDB/MySQL/Percona Server • Developed by Monty Program Ab & SkySQL Ab, released as LGPL 29 Nov 2012 • ODBC is in the works, sponsors are welcome!
  29. 29. MariaDB Galera Cluster • MariaDB Galera Cluster is made for today’s cloud based environments. It is fully read- write scalable, comes with synchronous replication, allows multi-master topologies, and guarantees no lag or lost transactions. • Currently 5.5-based, we see this as important for 10.0 as well (merges will happen closer to GA)
  30. 30. TokuDB • It’s now opensource • Improved insert & query speed, compression, replication performance and online schema flexibility • Uses Fractal Tree Indexes instead of B-Tree • Tests & builds of TokuDB on multiple platforms (think greater distribution)
  31. 31. CONNECT Storage Engine • Made by Olivier Bertrand • Read, write & update files in different storage formats: • .DBF (dBASE format) • .CSV • .INI • XML • ODBC • Possible to join data from CassandraSE, XtraDB and an ODBC data source like Oracle
  32. 32. Benchmarks • “Lies, damned lies, and statistics” - Mark Twain • http://blog.mariadb.org/sysbench-oltp- mysql-5-6-vs-mariadb-10-0/ • http://dimitrik.free.fr/blog/archives/2013/02/ mysql-performance-mysql-56-vs-mysql-55- vs-mariadb-55.html • Yes, we’ve gotten Oracle to notice MariaDB :-)
  33. 33. Continued commitments • Security • Since about a year now, we’re the go-to people for security - good track record • We don’t like regressions • http://www.skysql.com/blogs/hartmut/nasty-innodb-regression- mysql-5525 • http://www.skysql.com/blogs/kolbe/heads-no-more-query-cache- partitioned-tables-mysql-5523 • We care about backward compatibility & introduce features carefully • XtraDB innodb_adaptive_checkpoint=none|reflex|estimate| keep_average (no more reflex...)
  34. 34. Community involvement • Many features since MariaDB 5.2 have come from the community or are sponsored features (5.3, 5.5) • Knowledgebase has 2,600+ articles in English • Yearly downloads of half a million (more users from mirrors + distributions) • Active mailing lists (stats on KB) • Google Summer of Code 2013 • MariaDB User Groups
  35. 35. MariaDB is gaining popularity • Wikipedia (English, German),Wikidata running MariaDB 5.5 • Fedora, OpenSUSE, RHEL7 shipping MariaDB as a default • Slackware, Chakra Linux,ArchLinux have followed suit • Many success stories at KB: Limelight Networks, Nimbuzz, Paybox, FictionPress, OLX, SlashGear, Web of Trust, SpamExperts, Cougarboard, etc.
  36. 36. Deployments! “MariaDB had these same bugs that we ran into with MySQL. However the big difference was that when we reported these bugs, they were quickly resolved within 48 hours!” -- Dreas van Donselaar, Chief Technology Officer, SpamExperts B.V. after migrating over 300 servers from MySQL 5.0 to MariaDB 5.1. “Migrating from MySQL 5.1 to MariaDB 5.2 was as simple as removing MySQL RPMs and installing the MariaDB packages, then running mysql_upgrade.” - Panayot Belchev, proprietor, Host Bulgaria on providing MariaDB to over 7,000 of their web hosting customers. “We made the switch on Saturday -- and we’re seeing benefits already -- our daily optimization time is down from 24 minutes to just 4 minutes” -- Ali Watters, CEO, travelblog.org happy users: pap.fr, wabtec, Paybox Services, OLX, Jelastic, Web of Trust, SaltOS, ERP5, etc. “@nginxorg & @mariadb have helped me save $12000/year in infrastructure cost. I love it! Do more with less!” - Ewdison Then, CEO, Slashgear
  37. 37. MariaDB Foundation • Foundation is driver of MariaDB project • Custodian of code, guardian of community • Foundation can never be controlled by single entity or person • Designed to be self-sustaining
  38. 38. MariaDB Foundation Goals • Increase adoption of MariaDB • Ensure sustainable high-quality efforts to build, test and distribute MariaDB • Ensure that community patches are reviewed and adopted • Guarantee a community voice • Keep MariaDB compatible with MySQL • Maintain mariadb.org
  39. 39. Coming up next • Merge SPIDER storage engine • Column level encryption via MyDiamo from Penta Security • New optimizations for Fusion-IO • You can shape the roadmap
  40. 40. Well supported • Everyone supports MariaDB from a support standpoint with the exception of Oracle • SkySQL, Percona, etc. • Jelastic has it as PaaS too • We support all GA releases for 5 years for security, etc.
  41. 41. User stats plugin • Disabled by default, consider enabling it to show use! http://mariadb.org/feedback_plugin/ data from over 113 countries!
  42. 42. Compatibility with MySQL • No NDB Cluster • XtraDB enabled as default up to 5.5, InnoDB in 10.0 (for now) • Optimizer: no worse than current plan
  43. 43. FAQ • Can I replicate from MySQL 5.6 to MariaDB 10.x? • Yes • Can I replicate from MariaDB 10.x to MariaDB 5.5? • Yes • Can I replicate from MariaDB 10.x to MySQL 5.5/5.6? • No
  44. 44. FAQ on tools • SELECTVERSION() returns 10.0.1- MariaDB • Version string in handshake packet will be 5.5.30-mysql-10.0.2-MariaDB (mysql#68187, MDEV-4088) • Tools should start recognising MariaDB for additional feature-set (mytop, HeidiSQL, etc.)
  45. 45. Conclusion • We’ve spent a lot of time adding features, some in parallel, some ahead • MariaDB is binary compatible with MySQL • Open bugs system, test suite, discussion lists • Opensource, feature rich, no commercial extensions
  46. 46. Resources • bugs: mariadb.org/jira • maria-discuss@lists.launchpad.net • maria-developers@lists.launchpad.net • fb.com/MariaDB.dbms • twitter: @mariadb • google plus: +MariaDB • #maria on irc.freenode.net • http://kb.askmonty.org/
  47. 47. Q&A byte@mariadb.com | colin@mariadb.org http://skysql.com/ | http://mariadb.org/ twitter: @bytebot | url: http://bytebot.net/blog/ planetmysql.org planetmariadb.org
  48. 48. Window to other worlds
  49. 49. • HandlerSocket • Dynamic columns • memcached access to InnoDB/NDBCLUSTER • node.js connector (JS) to InnoDB, NDBCLUSTER • Hadoop Applier • LevelDB Storage Engine • Cassandra Storage Engine • HBase connectivity - honeycomb
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