My sql 56_roadmap_april2012

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CONFIDENTIAL – ORACLE HIGHLY RESTRICTED

2
The MySQL Roadmap: Discover What’s New
June, 2012
Keith Larson, MySQL Community Manager

3Copyright Oracle Corporation 2012
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.

localhost ~]$ whoami
Keith Larson
keith.larson@oracle.com
MySQL Community Manager
sqlhjalp.blogspot.com
Started with MySQL 3.23 during the dot.com days.
Primary real world work was with a MySQL InnoDB delayed replicated environment
that easily held over 4 billion rows of user data. Did a lot of data mining of that data
over the years.
Numerous other sites developed on LAMP stack over the last 13 years.
Who are you?
DBAs?
Developers?

Oracle’s Investment in MySQL
Rapid Innovation
Make MySQL a Better MySQL
• #1 Open Source Database for Web Applications
• “M” in most complete LAMP stack
• Embedded
Develop, Promote and Support MySQL
• Improved engineering, consulting and support
• Leverage 24x7, World-Class Oracle Support
MySQL Community Edition
• Source and binary releases
• GPL license

More Product Releases Than Ever Before
CY2010 CY2011
• MySQL Workbench 5.2
• MySQL Database 5.5
• MySQL Enterprise Backup
3.5
• MySQL Enterprise Monitor
2.3
• MySQL Cluster Manager 1.1
All GA!
A Better MySQL
Q1 CY2012
2.2
• MySQL Cluster 7.1
• MySQL Cluster Manager 1.0
3.7
• Oracle VM Template for
MySQL Enterprise Edition
• MySQL Enterprise Oracle
Certifications
• MySQL Windows Installer
• New MySQL Enterprise
Commercial Extensions
*Development Milestone Release
• MySQL Database 5.6 DMR*
• MySQL Cluster 7.2 DMR
and MySQL Labs!
(“early and often”)
Driving MySQL
Innovation
All GA!
• MySQL Cluster 7.2
• MySQL Cluster
Manager 1.4
• MySQL Utilities 1.0.6
• MySQL Database
5.6.5 DMR*
and MySQL Labs!
(“early and often”)
All GA!

InnoDB is the default storage engine
• ACID Transactions, FKs, Crash Recovery
Improved Performance
• Enhancements in MySQL DB
• Enhancements in InnoDB
• + 360% over 5.1 on Linux
• + 1500% over 5.1 on Windows
Improved Availability
• Semi-synchronous Replication
• Replication Heartbeat
Improved Usability
• SIGNAL/RESIGNAL
• More Partitioning Options
• New PERFORMANCE_SCHEMA
MySQL 5.5 – Best Release Ever

MySQL 5.5 Scales On Multi-Core
SysBench Read Write
MySQL 5.1
MySQL 5.5.3
MySQL 5.5.4
AMD Opteron 7160 (Magny-Cours) @2100 MHz
64 GB memory
2 x Intel X25E SSD drives
OS is Oracle Enterprise Linux with the Enterprise Kernel
4 sockets with a total of 48 cores.
Transactions/Second

• MySQL 5.6 builds on MySQL 5.5 by improving:
• Performance and Scalability
• Optimizer for better query execution times, diagnostics
• Performance Schema for better instrumentation
• InnoDB for better transactional throughput
• Replication for higher availability, data integrity
• “NotOnlySQL” options for better flexibility
• 5.6.5 m8 latest DMR -- 2012
MySQL Database 5.6: A Better MySQL.

Model: Development Milestone Releases (“DMR”)
• New DMR every 3-6 months
• Accumulating features for Next GA (5.6)
• New features integrated on stable trunk
• Features signed off by QA and tested together
• Close to Release Quality
• Next GA cut from one upcoming DMR
Model: MySQL Labs “Early Access” features
• Previews, not on trunk
• No promise of making GA release
MySQL “Early Access” Release Models
Database and Cluster

MySQL 5.6.5 – Optimizer Enhancements
• Subquery Optimizations
• File sort optimizations with small limit
• 3X better execution time – 40s to 10s
• Index Condition Pushdown
• Better execution time – 15s to 90ms
• Batched Key Access and Multi Range Read
• Better execution time – 2000s to 10s
• Postpone Materialization of views/subqueries in FROM
• 240X better execution time for EXPLAIN - 8m to 2s

MySQL 5.6.5 – Optimizer
Postpone materialization of views/subqueries
Late materialization
• Allows fast EXPLAINs for views/subqueries
• Avoid materialization when possible, faster bail out
A key can be generated for derived tables
=> 240X better execution time (drops from ~8 min to ~2 sec)
EXPLAIN SELECT * FROM (SELECT * FROM a_big_table);
SELECT … FROM derived_table AS dt
join table AS t WHERE dt.fld = t.dlf

EXPLAIN in MySQL 5.5: Room for Improvement
●
SELECT statements only
●
What about INSERT, UPDATE, DELETE ?
●
Tabular output
●
Difficult to see the structure of the query plan
●
More information would be useful
●
E.g., When are the WHERE conditions evaluated?
●
Shows the chosen plan, but does not tell you why this plan
was chosen.

• Long standing feature request from customers and users
mysql> EXPLAIN UPDATE t1 SET c1 = 10 WHERE c2 = 1;
+----+-------------+-------+-------+---------------+------+---------+------+------+-------------+
| id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra |
+----+-------------+-------+-------+---------------+------+---------+------+------+-------------+
| 1 | SIMPLE | t1 | range | c2,c2_2 | c2 | 5 | NULL | 1 | Using where |
+----+-------------+-------+-------+---------------+------+---------+------+------+-------------+
1 row in set (0.00 sec)
MySQL 5.6.5 – Optimizer
Add EXPLAIN for INSERT/UPDATE/DELETE
CREATE TABLE t1(c1 INT, c2 INT, KEY(c2), KEY(c2, c1));
EXPLAIN UPDATE t1 SET c1 = 10 WHERE c2 = 1;

MySQL 5.6: EXPLAIN for Data-Modifying
Statements
EXPLAIN UPDATE t1 SET b = 'b' WHERE a > 2 G
id: 1
select_type: SIMPLE
table: t1
type: range
possible_keys: a,a_2
key: a
key_len: 16
ref: null
rows: 2
Extra: Using where; Using temporary

MySQL 5.6: EXPLAIN for Data-Modifying
Statements, cont.
EXPLAIN INSERT INTO t1
SELECT * FROM t2 WHERE a IN (1, 3, 5) G
id: 1
select_type: SIMPLE
table: t2
type: range
possible_keys: t2i1
key: t2i1
key_len: 4
ref: null
rows: 3
Extra: Using index condition

MySQL 5.6: Structured EXPLAIN
EXPLAIN FORMAT=JSON
SELECT * FROM t2 WHERE i > 1 AND j < 3;
{
"query_block": {
"select_id": 1,
"table": {
"table_name": "t2",
"access_type": "range",
"possible_keys": [
"PRIMARY"
] /* possible_keys */,
...

MySQL 5.6: Structured EXPLAIN, cont.
...
"key": "PRIMARY",
"key_length": "4",
"rows": 2,
"filtered": 100,
"index_condition": "(`test`.`t2`.`i` > 1)",
"attached_condition": "(`test`.`t2`.`j` < 3)"
} /* table */
} /* query_block */
}

SET SESSION.OPTIMIZER_TRACE=‘enabled=on’;
SELECT v FROM t1 WHERE i1 = 1 AND v = 'a';
SELECT * FROM INFORMATION_SCHEMA.OPTIMIZER_TRACE; "rows_estimation": [
{
"table": "`t1`",
"range_analysis": {
"table_scan": {
"rows": 5,
"cost": 4.1
},
"potential_range_indices": [
{
"index": "v_idx",
"usable": true,
"key_parts": [
"v",
"i1"
]
}
],
"best_covering_index_scan": {
"index": "v_idx",
"cost": 2.0063,
"chosen": true
},
• EXPLAIN shows the generated plan
• TRACE shows how the plan was generated,
decision points etc.
• JSON format
• Developers, support, advanced customers
Query Plan Debugging
MySQL 5.6.5 – Optimizer Traces

testpe
r
CREATE TABLE person (
personid INTEGER PRIMARY KEY,
firstname CHAR(20),
lastname CHAR(20),
postalcode INTEGER,
age INTEGER,
address CHAR(50),
KEY k1 (postalcode,age)
) ENGINE=InnoDB;
SELECT lastname, firstname FROM person
WHERE postalcode BETWEEN 5000 AND 5500 AND age BETWEEN 21 AND 22;
• With ICP Disabled
• 15 s (buffer pool 128 Mb)
• 1.4 s (buffer pool 1.5 Gb)
Index Condition Pushdown (ICP)
• With ICP Enabled
⇒ Execution time drops to 90 ms for both

0 8 16 24 32 40 48 56 64
5
50
500
5000
1225
9.63
2821
No BKA
BKA
Join Buffer Size (MB)
QueryTime(secs)
Batched Key Access (BKA) and Multi Range Read
Improves performance of disk-bound join queries
Execution time
without BKA + MRR
Execution time
with BKA + MRR
DBT3 Q3: “Customer Distribution Query”

• Statements/Stages
• What are my most resource intensive queries? Where do they spend
time?
• Table/Index I/O, Table Locks
• Which application tables/indexes cause the most load or contention?
• Users/Hosts/Accounts
• Which application users, hosts, accounts are consuming the most
resources?
• Network I/O
• What is the network load like? How long do sessions idle?
• Summaries
• Aggregated statistics grouped by thread, user, host, account or object
MySQL 5.6.5 – Performance Schema Instrumentation
Improved Database Profiling/Application Tuning

MySQL 5.6.5 – InnoDB Enhancements
• Better Performance, Scale
• Improved performance on multi-core/CPU servers
• Improved thread scheduling
• Reduced contention during file extension
• Deadlock detection now non-recursive
• Improve LRU flushing
• Increase max redo log size
• Separate tablespaces for undo log
• Fast checksum
• Better recovery
• Dump and restore buffer pool
• Better Usability
• Full-text Search
• Variable page sizes – 4k, 8k
• Larger limit of index key prefixes (3072 bytes)

MySQL 5.6.5 – Replication Enhancements
• High Availability and Fail-over
• Global Transaction Ids
• Replication Administration and Fail-over Utilities
• Better Data Integrity
• Crash-Safe Slaves, Replication Checksums, Crash-Safe Binlog
• Better Performance, Scale
• Multi-threaded slaves
• Reduced Binlog size for RBR
• Extra flexibility
• Time-delayed replication
• Simpler troubleshooting
• Row-based repl. logging of original query
• Enhanced Monitoring/Management

•Foundation for reliable, automatic failover & recovery
• Unique identifier for each replication event written to the Binlog
•Simple to track & compare replication across the cluster
•Automatically identify the most up-to-date slave for failover
•Deploy complex replication topologies
•Eliminates Dev/Ops overhead
Master
GTID=123456
GTID=123456
GTID=123456 GTID=123456
MySQL 5.6.5 - Global Transaction Ids

MySQL Utilities
• Automate common Dev/Ops tasks
• Replication: provisioning, testing, monitoring and failover
• Database comparisons: consistency checking
• Database administration: users, connections, tables, etc
• New utilities in development, ie log analysis
• Implemented as Python scripts, executed within MySQL
Workbench
• Extensible to include custom scripting
• Resources: Documentation & Community Forum
• http://dev.mysql.com/doc/workbench/en/mysql-utils-man.html
• http://forums.mysql.com/list.php?155

Utility Workflow for Replication
• Check: Verifies pre-requisites for Replication
• Repl: Initiates Replication to the new slave
• Show: Display Replication topology
• Fail-Over & Admin: Detects and failovers (or switches)
from master to slave. Status monitoring
Check Repl Show
Fail-Over
& Admin

•Automatic failover & slave promotion
• Continuous health monitoring & recovery
•Default is to promote most up-to-date
slave, based on GTID
• Slave promotion policies are fully
configurable
•Never lose replication events
• Nominated slave automatically retrieves
updates from later slaves
Replication Failover Utility
Failover
Utility
Monitoring
Fail-
Over
Master
Slaves
Auto-Failover &
Slave Promotion

Replication Administration Utility
•Perform switchover to eliminate
downtime during planned
maintenance
•Start and stop slaves
•Slave discovery & monitoring
• Slave status, thread status
• Replication processing, including any lag
• Configure slave promotion policies
Master
Slaves
Administration
Utility
Status &
Switchover
Admin

Copyright Oracle Corporation 2012
MySQL <5.6
Transaction Data: in tables
Replication Info: in files
MySQL 5.6
Transaction Data: in tables
Replication Info: in tables
Slave Tables for Replication Information


System tables:

slave_master_info (mysql.slave_master_info)

--master-info-repository=TABLE

slave_relay_log_info (mysql.slave_relay_log_info)

--relay-log-info-repository=TABLE

mysql_slave> stop slave;

mysql_slave> SET GLOBAL master_info_repository = 'TABLE';

mysql_slave> SET GLOBAL relay_log_info_repository = 'TABLE';

mysql_slave> start slave;

Make sure you add to my.cnf

master-info-repository =TABLE

relay-log-info-repository =TABLE

Transactional tables enables transactional slave positions

Automatic conversion between files and tables on startup

Long time awaited feature
http://dev.mysql.com/doc/refman/5.6/en/replication-options-binary-log.html

mysql_slave> select * from slave_master_info G

*************************** 1. row ***************************

Master_id: 2

Number_of_lines: 22

Master_log_name: yoda-bin.000003

Master_log_pos: 323

Host: yoda

User_name: replication

User_password: slavepass

Port: 3306

Connect_retry: 10

Enabled_ssl: 0

Ssl_ca:

Ssl_capath:

Ssl_cert:

Ssl_cipher:

Ssl_key:

Ssl_verify_server_cert: 0

Heartbeat: 1800

Bind:

Ignored_server_ids: 0

Uuid: 75d407df-2be4-11e1-9668-b4be9bce39b0

Retry_count: 86400

Ssl_crl:

Ssl_crlpath:



Detects corrupt replication events before they are
applied

Guards against bugs and disk or network corruptions

CRC-32 checksum, more precisely ISO-3309 (supplied
with zlib)

New mysqld options:

binlog-checksum= NONE or CRC32 generated
by the session thread and written to the binary log

SET GLOBAL binlog_checksum = 1;

master-verify-checksum= 0 or 1 Master
validates checksum read from the binary log

SET GLOBAL master_verify_checksum = 1;

slave-sql-verify-checksum= 0 or 1 SQL
thread should verify the checksum when reading it
from the relay log on the slave

mysql> SET GLOBAL slave_sql_verify_checksum=1;
http://mysqlmusings.blogspot.com/2011/04/replication-event-checksum.html
Replication Event Checksums

Problem: events get corrupted while en route from master to slave.
Why and where it got corrupted?
Disk corruption, network, bugs in replication, faulty memory, cosmic ray, act of God?
Solution: include in each event its control checksum and verify it before:
sending it to the slave (master - dump thread)
storing it in the relay log (slave - IO thread)
applying it (slave - SQL thread)
several verification points: flexibility
mysql> show global variables like '%checksum%';
+---------------------------+--------+
| Variable_name | Value |
+---------------------------+--------+
| binlog_checksum | CRC32 |
| innodb_checksum_algorithm | innodb |
| innodb_checksums | ON |
| master_verify_checksum | ON |
| slave_sql_verify_checksum | ON |
+---------------------------+--------+
Replication Event Checksums

Throughput of slave increased by allowing multiple slave threads:

0 - functionality disabled

0 to 1024
Exec_Master_Log_Posn in SHOW SLAVE STATUS represents a “low-
water” mark, before which no uncommitted transactions remain.
Configure using:

slave-parallel-workers=4
On a per-database basis

can process successive transactions on a given database without
waiting for updates on other databases to complete
http://dev.mysql.com/doc/refman/5.6/en/replication-options-slave.html#sysvar_slave_parallel_workers
Multi-Threaded Slave

mysql_luke> show slave statusG
*************************** 1. row ***************************
....
Exec_Master_Log_Pos: 114
mysql> show global variables like '%workers%';
+------------------------+-------+
+------------------------+-------+
| slave_parallel_workers | 0 |
+------------------------+-------+
mysql> SET GLOBAL slave_parallel_workers=4;
Query OK, 0 rows affected (0.00 sec)
mysql> show global variables like '%workers%';
+------------------------+-------+
+------------------------+-------+
| slave_parallel_workers | 4 |
+------------------------+-------+
http://dev.mysql.com/doc/refman/5.6/en/replication-options-slave.html#sysvar_slave_parallel_workers
Multi-Threaded Slave

In MySQL row-based replication (RBR), each row change event contains two images, a
“before” image whose columns are matched against when searching for the row to be
updated, and an “after” image containing the changes.

can often save disk, memory, and network usage by logging only those columns which
are actually required.

Default is full : Log all columns in both the before image and the after image.

New option: binlog-row-image= minimal

no effect when the binary logging format is STATEMENT. When binlog_format is MIXED,
the setting for binlog_row_image is applied to changes that are logged using row-based
format, but this setting no effect on changes logged as statements.

mysql> show global variables like '%binlog_row_image%';

mysql> SET GLOBAL binlog_row_image=minimal;
http://d2-systems.blogspot.com/2011/04/mysql-562-dm-optimized-row-based.html
http://dev.mysql.com/doc/refman/5.6/en/replication-options-binary-log.html#sysvar_binlog_row_image
Optimized Row Based Replication

Problem: Make replication slave to lag a specified amount of time behind
the master to:

To protect against user mistakes on the master.

To test how the system behaves when there is a lag.

To inspect what the database looked like long ago, without having to
reload a backup.
Solution: The slave waits until a given number of seconds elapses before
applying the changes:

Delays configured per slave: flexible deployment;

Are implemented in the SQL thread layer.

Rolling Database Backups with Relayed Replication
Time Delayed Replication

User interface:

CHANGE MASTER TO MASTER_DELAY = <NUM_SECONDS>;

mysql> stop slave;

mysql> CHANGE MASTER TO MASTER_DELAY=86400; start slave;

SHOW SLAVE STATUS:

SQL_Delay: 86400

SQL_Remaining_Delay: 86395

Slave_SQL_Running_State: Waiting until MASTER_DELAY seconds after master
executed event

RESET SLAVE clears the configured delay;
Rolling forward delayed slaves until bad event:
START SLAVE [SQL_THREAD] UNTIL MASTER_LOG_FILE = 'log_name',
MASTER_LOG_POS = log_pos
http://dev.mysql.com/doc/refman/5.6/en/replication-delayed.html
http://dev.mysql.com/doc/refman/5.6/en/start-slave.html

86400 seconds in a day.
slave2> CHANGE MASTER TO
-> MASTER_HOST = 'localhost',
-> MASTER_PORT = 3306,
-> MASTER_USER = 'repl_user',
-> MASTER_PASSWORD = 'pw',
-> MASTER_DELAY = 86400;
slave2> START SLAVE;

mysql_luke> STOP SLAVE;
mysql_luke>SHOW RELAYLOG EVENTS FROM 2337G
*************************** 4. row ***************************
Log_name: luke-relay-bin.000005
Pos: 2674
Event_type: Query
Server_id: 1
End_log_pos: 2623
Info: drop database Tatooine
mysql_luke> START SLAVE UNTIL
-> MASTER_LOG_FILE='luke-relay-bin.000005',
-> MASTER_LOG_POS=2674;

Problem: no way to send informational events down the replication stream.
Solution: Create a class of events that carry information from master to slave(s):

Use case: log the query that originated several rows events up-front as an
informational event;

Feature often requested for debugging.
http://d2-systems.blogspot.com/2011/04/mysql-562-dm-binlog-informational.html
http://dev.mysql.com/doc/refman/5.6/en/replication-options-binary-log.html#option_mysqld_binlog-rows-query-log-events
Informational Log Events

Enhances auditing and debugging when using Row-Based Replication by writing
the original query to the binary log, which is then replicated with its associated
row-based event to the slave.
write informational log events such as row query log events into its binary log.
sysvar_binlog_rows_query_log_events must be disabled during logging.
Logs the query that originated the subsequent rows changes.
Shows up in mysqlbinlog and SHOW SLAVE STATUS output.
New variable:
--binlog-rows-query-log-events= ON|OFF (default: OFF)
mysql> SET GLOBAL binlog_rows_query_log_events=ON;
mysql> show global variables like '%binlog_rows_query_log_events%';
+------------------------------+-------+
+------------------------------+-------+
| binlog_rows_query_log_events | ON |
+------------------------------+-------+

mysql> SET binlog_format=ROW;
mysql> SET SESSION binlog_rows_query_log_events=ON;
mysql> CREATE TABLE t1 (a INT);
mysql> INSERT INTO t1 VALUES (1), (2), (3);
Records: 3 Duplicates: 0 Warnings: 0
mysql> SHOW BINLOG EVENTS;
+-------------------+-----+-------------+-----------+-------------+-----------------------------------------------+
| Log_name | Pos | Event_type | Server_id | End_log_pos | Info |
+-------------------+-----+-------------+-----------+-------------+-----------------------------------------------+
| master-bin.000001 | 4 | Format_desc | 1 | 114 | Server ver: 5.6.3-m5-debug-log, Binlog ver: 4 |
| master-bin.000001 | 114 | Query | 1 | 200 | use `test`; CREATE TABLE t1 (a INT) |
| master-bin.000001 | 200 | Query | 1 | 268 | BEGIN |
| master-bin.000001 | 268 | Rows_query | 1 | 323 | # INSERT INTO t1 VALUES (1), (2), (3) |
| master-bin.000001 | 323 | Table_map | 1 | 364 | table_id: 54 (test.t1) |
| master-bin.000001 | 364 | Write_rows | 1 | 408 | table_id: 54 flags: STMT_END_F |
| master-bin.000001 | 408 | Query | 1 | 477 | COMMIT |
+-------------------+-----+-------------+-----------+-------------+-----------------------------------------------+
7 rows in set (0.00 sec)
http://d2-systems.blogspot.com/2011/04/mysql-562-dm-binlog-informational.html

Problem: There is no way to create real-time backups of the master's binary logs.
Solution: Make use of mysqlbinlog facilities that retrieve and dump remote
MySQL log contents as SQL statements to make it output in raw format:

DBAs don't need to do remote logins to retrieve master's binlogs or setup
an intermediate slave.
Remote Backup of Binary logs

Make use of mysqlbinlog facilities that retrieve and dump remote MySQL log contents.
Writes to a local file with the same name as the original.
DBAs don't need to do remote logins to retrieve master's binlogs or setup an
intermediate slave.
Relevant new options for mysqlbinlog:

raw: dump in raw format

stop-never: waits for new data upon reaching the end of the log

stop-never-slave-server-id: id that mysqlbinlog will use to emulate itself as a slave.
Raw format use cases:

make a static backup

backing up a set of log files and stopping when the end of the last file is reached

continuous (“live”) backup
$> mysqlbinlog --read-from-remote-server –raw -h secret_server -P 3306 -u root mysql-bin.000001
http://dev.mysql.com/doc/refman/5.6/en/mysqlbinlog-backup.html
Remote Backup of Binary logs

MySQL 5.6.5 – Other Enhancements
• TIME/TIMESTAMP/DATETIME – fractional second precision
• Ipv6 improvements
• Support Unicode for Windows command client
• Import/export tables to/from partitioned tables
• Explicit partition selection
• GIS/MyISAM: Precise spatial operations
Get it now!
dev.mysql.com/downloads/mysql/

• Replication
• Binlog Group Commit
• Binlog API
• InnoDB
• Memcached API for accessing InnoDB data
• Online operations (INDEX add, FK drop, Column rename)
• SSD/Flash Optimizations
• And More...
MySQL Database - Under Development
Early Access Features
labs.mysql.com/
Try it now!
labs.mysql.com

• Fast, simple access to InnoDB
• Accessed via Memcached API
• Use existing Memcached clients
• Bypasses SQL transformations
• NotOnlySQL access
• For key-value operations
• SQL for rich queries, JOINs, FKs, etc.
• Implementation
• Memcached daemon plug-in to mysqld
• Memcached protocol mapped to the
native InnoDB API
• Shared process space for ultra-low
latency
InnoDB Storage Engine
MySQL Server Memcached plugin
Application
SQL
(MySQL Client)
NoSQL
(Memcached
Protocol)
mysqld
MySQL Database – Key-value access for InnoDB
NotOnlySQL: Memcached API
Try it now!
labs.mysql.com

MySQL Database Development Priorities
• Performance/Scale – more threads/cores, SSD
• Cloud/SaaS/DaaS
• Multi-tenancy - Role-based security/ACLs, session/host level
throttling, more authentication options
• Elastic Scale – Auto-sharding/partitioning of data, provisioning of
replicas, load balancing, “elastic” allocation of server/VM resources
• Web-based management, monitoring, backup/recovery
• High Availability
• Multi-source, master replication, conflict detection
• Auto-failover, redundancy
• Management tools and utilities for ease of use
• Pluggable, micro-kernel architecture

• Foreign Keys
• Ease of Use
• Tools for simplified configuration, provisioning &
management
• Enhanced API Support
• New NoSQL Interfaces
• Richer SQL Functionality
• Performance & Capacity Increases
• Optimizations for latest hardware developments
• Wider Deployment Options
• Virtualization
• Cloud
MySQL Cluster Development Priorities

Most secure, scalable MySQL Database, Online Backup,
Development/Monitoring Tools, backed by Oracle Premier
Lifetime Support
Oracle Premier
Support
Oracle Product
Certifications/Integrations
MySQL Enterprise
High Availability
MySQL Enterprise
Security
MySQL Enterprise
Scalability
MySQL Enterprise
Backup
MySQL Enterprise
Monitor/Query Analyzer
MySQL Workbench

• MySQL Enterprise Security
• External Authentication for Windows and PAM
• Integrates MySQL apps with existing infrastructures
• MySQL Enterprise Scalability
• MySQL Thread Pool
• Improves sustained performance/scale as connections grow
• 20x scale improvement in SysBench OLTP R/W benchmarks
• MySQL High Availability
• Oracle VM Template for MySQL
• Windows Clustering
• Oracle Product Certifications
• Manage MySQL with Oracle tools that are already in use
Commercial Extensions Available Now

Connect as
4. Tokens are checked, win_joe
user is authenticated using
Windows login, password with
MySQL specific privs
Connect as
1. MyDomain/joe logs into
environment with Windows
login, password
Connected
Authenticate
CREATE USER win_joe
IDENTIFIED WITH authentication_windows
AS ‘joe';
App
Win OS users,
groups, etc
Windows
Auth
Connect as
2. MyDomainjoe is
authenticated on
Windows OSConnect as
3. MyDomain/joe logs into
application, application
connects to MySQL with user
win_joe.
Connector
Windows Authentication
Example

3. User name/password sent
to the PAM library, yes/no
answer from PAM library
returned to client.
1. Joe logs in using
application user
name/password.
Connected
CREATE USER joe
IDENTIFIED WITH 'authentication_pam'
AS ‘mysql';
App
PAM library
and various
backends
2. Connector sends the user
name/password to the
MySQL server.
Connector
4. PAM library verifies credentials
(using e.g. LDAP or Kerberos etc)
and returns yes/no answer for
delivery to client.
PAM
Authentication
PAM Authentication
Example

Default Thread Handling
Internal Clients
Default
Thread Handling
Connections
/statements
assigned
to Threads
for life
• Connections assigned to 1 thread for the life of the connection, same
thread used for all statements
• No prioritization of threads, statement executions
• Many concurrent connections = many concurrent execution threads to
consume server memory, limit scalability
Connection Execution Threads
External Clients

With Thread Pool Enabled
Internal Clients
Connection Execution Threads
External Clients
Thread Pool
Thread Group 1
Threads 1 - 4096
Thread Group 2
Threads 4097 - 8193
Thread Group N
Threads 8194 - N
• Thread Pool contains configurable number of thread groups (default = 16),
each manages up to 4096 re-usable threads
• Each connection assigned to thread group via round robin
• Threads are prioritized, statements queued to limit concurrent executions,
load on server, improve scalability as connections grow
Thread Group 1
Thread Group 2
Thread Group N

With Thread Pool
MySQL Community Server
Without Thread Pool
20x Better Scalability with Thread Pool
8 32 128 512 1536 2560 3584
0
1000
2000
3000
4000
5000
6000
7000
8000
MySQL 5.5 Sysbench OLTP Read/Write
Simultaneous Database Connections
Transactions Per Second
MySQL 5.5.16
Oracle Linux 6.1, Unbreakable Kernel 2.6.32
2 sockets, 24 cores, 2 X 12-core
Intel(R) Xeon(R) X5670 2.93GHz CPUs
72GB DDR3 RAM
2 X LSI SCSI Disk (MR9261-8i) (597GB)

With Thread Pool
MySQL Community Server
Without Thread Pool
3x Better Scalability with Thread Pool
MySQL 5.5.16
Oracle Linux 6.1, Unbreakable Kernel 2.6.32
2 sockets, 24 cores, 2 X 12-core
Intel(R) Xeon(R) X5670 2.93GHz CPUs
72GB DDR3 RAM
2 X LSI SCSI Disk (MR9261-8i) (597GB)
8 32 128 512 1536 2560 3584
0
2000
4000
6000
8000
10000
12000
MySQL 5.5 Sysbench OLTP Read Only
Simultaneous Database Connections
Transactions Per Second

• MySQL Enterprise Security
• MySQL Database Auditing extension
• More Authentication plug-ins
• Oracle Product Certifications
• Oracle Audit Vault
• MySQL Enterprise High Availability
• Oracle Clusterware
MySQL Enterprise Development Priorities

• Performance – parallel backups, skip empty pages,
more
• Efficiency, Ease of use
• Better PIT recovery
• Remote backup administration (on-premise, Cloud)
• Integration with Enterprise tools
• MySQL Workbench SE
• Schema/data migration from SQL Server
• ER Model Repository
• Code generation – PHP, Python

• Evolve into management
• Instance, Backup, ReplicationHA
• Integration with Oracle Enterprise Manager

Oracle Fusion MiddleWare
• WebLogic Server
• Database Adapter for Oracle
SOA Suite
• Oracle Business Process
Management
• Oracle Virtual Directory
• Oracle Data Integrator
• Oracle Enterprise
Performance Management
• Oracle Identity Analytics
• Open SSO STS, Open SSO
Fedlet
• Oracle Linux
• Oracle VM
• Oracle VM Template for
• Oracle GoldenGate
• Oracle Secure Backup
• Oracle Database Firewall
• MyOracle Online Support
MySQL Enterprise Oracle Certifications
Completed

mysql.com

TCO calculator: http://www.mysql.com/tcosavings/

White Papers: http://www.mysql.com/why-mysql/white-papers/

Customer use cases and success stories:
http://www.mysql.com/why-mysql/case-studies/
dev.mysql.com

Downloads: http://dev.mysql.com/downloads/

Documentation: http://dev.mysql.com/doc/

Forums: http://forums.mysql.com/

PlanetMySQL: http://planet.mysql.com

List of resources (books) : http://dev.mysql.com/resources/
MySQL Resources

eDelivery.com

Download and evaluate all MySQL products
Wiki:
https://wikis.oracle.com/display/mysql/Home
50 things to know before migrating Oracle to MySQL
It is a little old but worth the read
www.xaprb.com/blog/2009/03/13/50-things-to-know-before-migrating-oracle-to-mysql/
MySQL Resources

https://blogs.oracle.com/MySQL/entry/more_early_access_features_in
http://mysqlblog.fivefarmers.com/2012/05/29/overlooked-mysql-5-6-new-features-
timestamp-and-datetime-improvements/
http://mysqlblog.fivefarmers.com/2012/05/23/overlooked-mysql-5-6-new-features-wl5217/
MySQL Resources

https://blogs.oracle.com/MySQL/entry/more_early_access_features_in

68
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My sql 56_roadmap_april2012

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