This document summarizes a presentation about new features and changes coming in MySQL 5.7. Key points include: MySQL 5.7 will include performance improvements, more robust transaction handling and memory instrumentation. However, some backwards incompatible changes will be needed to improve the architecture. The presentation outlines several proposed changes, such as making replication more durable by default and changing the default SQL mode to STRICT. It also discusses new features for InnoDB and the optimizer.

1. MySQL 5.7 Preview for LA MySQL Users Group
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Dave Stokes
MySQL Community Manager
David.Stokes@oracle.com
1Copyright © 2013, Oracle and/or its affiliates. All rights reserved.
@Stoker

2. Safe Harbor Statement
The following is intended to outline our general product direction. It is
intended for information purposes only, and may not be incorporated
into any contract. It is not a commitment to deliver any material, code,
or functionality, and should not be relied upon in making purchasing
decision. The development, release, and timing of any features or
functionality described for Oracle’s products remains at the sole
discretion of Oracle.
2Copyright © 2013, Oracle and/or its affiliates. All rights reserved.

3. MySQL Manual 5.7
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•
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Performance Improvements
MDL, Transactions & Memory
Instrumentation with Performance
Schema
Cleans up and improves architecture
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4. But 5.7 will BREAK some things
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Yes, we KNOW it is painful!
We are trying to be
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As carefule as possible
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Provide as much notice as possible
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Let you know why we made the change
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5. Things to do to help the change
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•
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Change the default to use desired behavior
Issue warnings about feature deprecations
Remove features
We are doing all three
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6. Proposal: enable sql mode to
ONLY_FULL_GROUP
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Default behavior for other databases
In 5.6 and lower, MySQL was guessing what to use for non-grouped
fields.
– New ANY_VALUE() SQL Function to allow 'non-deterministic'
statements so things can work 'old way'
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7. Replication
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5.6 provided more durable replication with group commit
5.7 proposal – make durable the default
– sync_binlog =1
–
Master-info-repository = TABLE
–
Relay-log-infor-repository = TABLE
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8. Proposal
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Deprecate SHOW ENGINE INNODB MUTEX
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Overlaps with Performance Schema
Deprecate InnoDB Monitor tables
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Developed long before Performance Schema
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9. Proposal – make STRICT the default SQL Mode
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Lot of criticism that MySQL is too permissive, truncating
out-of-range, zero dates, etc.
Roll ERROR_FOR_DIVISION_BY_ZERO, NO_ZERO_DATE,
and NO_ZERO_IN_DATE into STRICT Mode
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10. Proposal
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Deprecate EXPLAIN PARTITIONS
Deprecate EXPLAIN EXTENDED
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11. Alter Ignore Table
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Useful for adding PRIMAY/UNIQUE keys on tables with
duplicate keys
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Will silently drop rows for you
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Deprecated 5.7.17
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Removed in DMR4
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Was a MySQL-only extension
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12. Query Cache
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Defaults to DISABLED in 5.6
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Plans for other options in later releases
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13. Deprecate NULL synonym N
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Anyone using? We DO want feedback!!
For removal in 5.7 or 5.8
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14. FEDERATE & MERGE Storage Engines
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We recommend multi-source replication over
Federated
We want your feedback if you are still using
Federated!!
Similar to Partitioning but MyISAM ONLY
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Major limitations with Partition Exchange
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Anyone using?
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15. Slide to check if audience is still awake
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16. Driving Innovation AND Quality
191 Worklogs for 5.6
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191 Bugs fixed in 5.6
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3763 Bugs in total since 5.5 GA
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911 New MTR tests in MySQL 5.6
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Tripled QA team – 400 man/years
experience
•
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17. New Yum Repositories
--Now with 5.7 DRMs
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Simple and convenient way to install and update MySQL to the latest
software packages using Yum
–
Server
–
Workbench
–
Connectors
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18. Benchmarks
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Sysbench Point Select
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95% faster than 5.6, ~32 concurrent user sessions
–
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500,000 Queries Per Second, ~ 64 concurrent user sessions
172% faster than 5.5
InnoDB Memached
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1,150,000 QPS, ~128 concurrent user sessions
–
550% faster than 5.6
18Copyright © 2013, Oracle and/or its affiliates. All rights reserved.

19. MySQL Database Development Priorities
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Optimized for Web, Cloud-based, Embedded use cases
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Simplified, Pluggable architecture
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Maintainability, more extensible
More NoSQL options (HTTP, JSON, JavaScript, etc.)
Refactoring
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Data Dictionary in InnoDB
Optimizer/Parser/Protocol
InnoDB
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Optimized for SSD
GIS
Easy HA, Replication and Sharding → Fabric
19Copyright © 2013, Oracle and/or its affiliates. All rights reserved.

20. Connections Per Second
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5.5.23 ~ 19k without P_S and ~18k with
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5.6.15 ~ 24K and 19.5k
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5.7.2 ~44k and ~18k
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5.7.3 ~45k and ~44k
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Thanks to help from Facebook!!
20Copyright © 2013, Oracle and/or its affiliates. All rights reserved.

21. Optimizer
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Improved JSON based explain
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VISUAL EXPLAIN
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Better traces
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Improved “IN” performance
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Non sorted fields in sort buffer compacted, reduces disk sorts
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22. Performance_schema
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New summary tables
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Easier place to start
–
Metadata Lock Instrumentation
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23. InnoDB
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Online rename index, online change to varchars
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Innochecksums (in 5.6) for calculated/reported → report
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5.7
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Selectable algorithm (innodb/crc32/none)
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Force rewrite of checksum (even if invalid)
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Table spaces > 3GB supported
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Specify max page count mismatch before terminating
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Supports multiple table spaced, files per tablespace
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24. InnoDB temp tables
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New separate table space for temp tables
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Better create/drop – 11x faster
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2-4x faster INSERT/DELETE/UPDATE
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Optimized DML operations
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Undo logs in temp table spces
24Copyright © 2013, Oracle and/or its affiliates. All rights reserved.

25. Replication
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Higher slave throughput, parallel threads on same schema
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Enhanced semi-sync, wait for N slaves
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Performance_Schema
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Added SSL for mysqlbinlog
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Dynamically change replication filers
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CHANGE REPLICATION FILTER
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No need to start/sop server to make changes
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26. Triggers
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Multiple Triggers per table
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Set execution order
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Check column constraints at end of trigger execution
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27. Error logging
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Three levels
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Errors Only
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Errors + Warnings
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Errors + Warnings + Notes (default)
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--log-error-verbosity = 1
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SET GLOBAL log_error_verbosity=1;
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--log_timestamps = SYSTEM UTC (default)
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28. Learn More
✗
mysql.com
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MySQL Products, Editions, Training, Consulting
Customer use cases and success stories
dev.mysql.com
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Downloads, Documentation
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Forums
PlanetMySQL
eDelivery.oracle.com
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Download and evaluate all MySQL products
28Copyright © 2013, Oracle and/or its affiliates. All rights reserved.

29. New MySQL 5.6 Training
Learn about the world’s most popular open-source database
Learn MySQL From Oracle
•
•
•
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Expert-led training to help you
install, configure, and
administer MySQL 5.6.
Extensive hands-on practices
guide you through each
concept
Explore real-world problems
and discover best practices
as you work with the tools
and techniques used by
professional MySQL
database administrators
Content developed in
collaboration with product
engineering.
Available in traditional or virtual classroom
as well as self-study formats.
Custom training solutions to match your
organization’s specific business needs
Backed by Oracle University’s 100%
Satisfaction Program
oracle.com/education/mysql
29Copyright © 2013, Oracle and/or its affiliates. All rights reserved.

30. MySQL Connect
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September, 4-days at same time as
OOW
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San Francisco Union Square Hotel?
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Learn from the best
➔
MySQL Engineers
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Customers
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Tutorials on Advanced Subjects
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Passes for User Groups?
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How do we discount for UG???
30Copyright © 2013, Oracle and/or its affiliates. All rights reserved.

31. MySQL 5.7
David.Stokes@Oracle.com
@stoker
slideshare.net/davestokes
31Copyright © 2013, Oracle and/or its affiliates. All rights reserved.