MySQL Forums
Forum List  »  Announcements

MySQL Community Server 5.5.62 has been released
Posted by: Jocelyn Ramilison
Date: October 22, 2018 10:26AM

Dear MySQL users,

MySQL Server 5.5.62 is a new version of the 5.5 production release of
the world's most popular open source database. MySQL 5.5.62 is
recommended for use on production systems.

MySQL 5.5 includes several high-impact enhancements to improve the
performance and scalability of the MySQL Database, taking advantage of
the latest multi-CPU and multi-core hardware and operating systems. In
addition, with release 5.5, InnoDB is now the default storage engine for
the MySQL Database, delivering ACID transactions, referential integrity
and crash recovery by default.

MySQL 5.5 also provides a number of additional enhancements including:

  - Significantly improved performance on Windows, with various Windows
    specific features and improvements
  - Higher availability, with new semi-synchronous replication and
    Replication Heartbeat
  - Improved usability, with Improved index and table partitioning,
    SIGNAL/RESIGNAL support and enhanced diagnostics, including a new
    Performance Schema monitoring capability.

For a more complete look at what's new in MySQL 5.5, please see the
following resources:


If you are running a MySQL production level system, we would like to
direct your attention to MySQL Enterprise Edition, which includes the
most comprehensive set of MySQL production, backup, monitoring,
modeling, development, and administration tools so businesses can
achieve the highest levels of MySQL performance, security and uptime.

For information on installing MySQL 5.5.62 on new servers, please see
the MySQL installation documentation at

For upgrading from previous MySQL releases, please see the important
upgrade considerations at:

MySQL Database 5.5.62 is available in source and binary form for a
number of platforms from our download pages at:

The following link lists the changes in the MySQL source code since the
previous released version of MySQL 5.5. It may also be viewed online at:

This is the last update to be published for MySQL Server 5.5. To
continue receiving updates for this product, you will need to upgrade to
at least version 5.6.


Changes in MySQL 5.5.62 (2018-10-22, General availability)

Functionality Added or Changed

     * Previously, file I/O performed in the I/O cache in the
       mysys library was not instrumented, affecting in
       particular file I/O statistics reported by the
       Performance Schema about the binary log index file. Now,
       this I/O is instrumented and Performance Schema
       statistics are accurate. Thanks to Yura Sorokin for the
       contribution. (Bug #27788907, Bug #90264)

     * The zlib library version bundled with MySQL was raised
       from version 1.2.3 to version 1.2.11. MySQL implements
       compression with the help of the zlib library.
       The zlib compressBound() function in zlib 1.2.11 returns
       a slightly higher estimate of the buffer size required to
       compress a given length of bytes than it did in zlib
       version 1.2.3. The compressBound() function is called by
       InnoDB functions that determine the maximum row size
       permitted when creating compressed InnoDB tables or
       inserting rows into compressed InnoDB tables. As a
       operations with row sizes very close to the maximum row
       size that were successful in earlier releases could now

Bugs Fixed

     * MySQL Server and test RPM packages were missing
       perl-Data-Dumper as a dependency. (Bug #28144933, Bug

     * For the mysql client, the -b short option was associated
       with two long options, --no-beep and --binary-as-hex. The
       -b option now is associated only with --no-beep. (Bug

     * During server startup/shutdown, PID files could be
       mishandled. (Bug #27919254)

     * For MEMORY tables, memory overflow errors could occur.
       (Bug #27799513)

     * When converting from a BLOB (or TEXT) type to a smaller
       BLOB (or TEXT) type, no warning or error was reported
       informing about the truncation or data loss. Now an
       appropriate error is issued in strict SQL mode and a
       warning in nonstrict SQL mode. (Bug #27788685, Bug

     * ALTER TABLE ... REORGANIZE PARTITION ... could result in
       incorrect behavior if any partition other than the last
       was missing the VALUES LESS THAN part of the syntax. (Bug

On Behalf of the MySQL/Oracle Release Engineering Team,
Hery Ramilison

Options: ReplyQuote

Written By
MySQL Community Server 5.5.62 has been released
October 22, 2018 10:26AM

Sorry, you can't reply to this topic. It has been closed.

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.