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MySQL Community Server 5.6.37 has been released
Posted by: Nawaz Nazeer ahamed
Date: July 17, 2017 05:45PM

Dear MySQL users,

MySQL Server 5.6.37, a new version of the popular Open Source Database
Management System, has been released. MySQL 5.6.37 is recommended for
use on production systems.

For an overview of what's new in MySQL 5.6, please see

     Starting with 5.6.11, Microsoft Windows packages for MySQL 5.6 are
     available both as a "full" installer and as a "web" installer.  The
     full installer is significantly larger and comes bundled with the
     latest software releases available. This bundle makes it easy to
     download and configure a full server and development suite.

     The web installer doesn't come bundled with any actual products and
     instead relies on download-on-demand to fetch only the products you
     choose to install. This makes the initial download much smaller but
     increases install time as the individual products will need to be

For information on installing MySQL 5.6.37 on new servers or upgrading
to MySQL 5.6.37 from previous MySQL releases, please see

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

Not all mirror sites may be up to date at this point in time, so if you
can't find this version on some mirror, please try again later or choose
another download site.

We welcome and appreciate your feedback, bug reports, bug fixes,
patches, etc:

The following link lists the changes in the MySQL 5.6 since the
release of MySQL 5.6.36. It may also be viewed online at


Changes in MySQL 5.6.37 (2017-07-17, General Availability)

     * Packaging Notes

     * Security Notes

     * Platform-Specific Notes

     * Functionality Added or Changed

     * Bugs Fixed

   Packaging Notes

     * mysqladmin was added to Docker/Minimal packages because
       it is needed by InnoDB Cluster. (Bug #25998285)

   Security Notes

     * Security Fix: The linked OpenSSL library for the MySQL
       Commercial Server has been updated to version 1.0.2l.  Issues
       fixed in the new OpenSSL version are described at  This change
       does not affect the Oracle-produced MySQL Community build of
       MySQL Server, which uses the yaSSL library instead. (Bug

   Platform-Specific Notes

     * Linux: The generic Linux build for MySQL 5.6 is now built
       on Oracle Linux 6 using glibc 2.12. Systems that use the build
       need to have glibc 2.12 or later installed on them.  (Bug

   Functionality Added or Changed

     * For Windows, MSI installer packages now include a check
       for the required Visual Studio redistributable package, and
       produce a message asking the user to install it if it is missing.
       (Bug #25658832)

     * The mysql client now supports a --binary-as-hex option
       that causes display of binary data using hexadecimal notation
       (0xvalue). Thanks to Daniƫl van Eeden for the patch. (Bug
       #25340722, Bug #84391)

     * mysqlaccess now looks for its configuration file only in
       the SYSCONFDIR directory and /etc. (Bug #25043674)

   Bugs Fixed

     * InnoDB: The server allocated memory unnecessarily for an
       operation that rebuilt the table. (Bug #25573565, Bug #85043)

     * InnoDB: When using an index merge optimizer switch, a
       SELECT COUNT(*) operation sometimes returned 0.  Partitioning
       code incorrectly performed a memcpy instead of a column copy of
       columns read by the index, causing the wrong records to be
       copied. (Bug #25332330, Bug #81031)

     * Replication: A USE statement that followed a SET
       GTID_NEXT statement sometimes had no effect. (Bug #26128931)

     * Replication: If the binary log on a master server was
       rotated and a full disk condition occurred on the partition where
       the binary log file was being stored, the server could stop
       unexpectedly. The fix adds a check for the existence of the
       binary log when the dump thread switches to next binary log file.
       If the binary log is disabled, all binary logs up to the current
       active log are transmitted to slave and an error is returned to
       the receiver thread. (Bug #25076007)

     * Replication: If a relay log index file named relay log
       files that did not exist, RESET SLAVE ALL sometimes did not fully
       clean up properly. (Bug #24901077)

     * Replication: mysqlbinlog, if invoked with the --raw
       option, does not flush the output file until the process
       terminates. But if also invoked with the --stop-never option, the
       process never terminates, thus nothing is ever written to the
       output file. Now the output is flushed after each event. (Bug

     * Replication: Multi-threaded slaves could not be
       configured with small queue sizes using
       slave_pending_jobs_size_max if they ever needed to process
       transactions larger than that size. Any packet larger than
       slave_pending_jobs_size_max was rejected with the error
       ER_MTS_EVENT_BIGGER_PENDING_JOBS_SIZE_MAX, even if the packet was
       smaller than the limit set by slave_max_allowed_packet.  With
       this fix, slave_pending_jobs_size_max becomes a soft limit rather
       than a hard limit. If the size of a packet exceeds
       slave_pending_jobs_size_max but is less than
       slave_max_allowed_packet, the transaction is held until all the
       slave workers have empty queues, and then processed. All
       subsequent transactions are held until the large transaction has
       been completed. The queue size for slave workers can therefore be
       limited while still allowing occasional larger transactions. (Bug
       #21280753, Bug #77406)

     * mysqldump could write database names in USE statements
       incorrectly. (Bug #25998635)

     * If the mysql_stmt_close() C API function was called, it
       freed memory that later could be accessed if mysql_stmt_error(),
       mysql_stmt_errno(), or mysql_stmt_sqlstate() was called. To
       obtain error information after a call to mysql_stmt_close(), call
       mysql_error(), mysql_errno(), or mysql_sqlstate() instead. (Bug

     * Queries could be cached incorrectly, leading to incorrect
       query results, under these circumstances: InnoDB table; rows are
       being inserted but have not yet been committed; a query uses the
       table as a base table in a derived table; the optimizer chooses
       to materialize the derived table. (Bug #25943038, Bug #86047)

     * Man pages for a few utilities were missing from
       Debian/Ubuntu packages. (Bug #25811814)

     * The field-t unit test failed to run with AddressSanitizer
       enabled. Thanks to Laurynas Biveinis for the patch. (Bug
       #25803823, Bug #85678)

     * Debian client packages were missing information about
       conflicts with native packages. (Bug #25799475)

     * The Perl path in #! lines at the beginning of Perl
       scripts has been adjusted to /usr/local/bin/perl for FreeBSD 11.
       (Bug #25719975)

     * The server exited abnormally attempting to access invalid
       memory. (Bug #25501659)

     * A race condition could occur for CREATE TABLE statements
       with DATA DIRECTORY or INDEX DIRECTORY clauses. (Bug #25451091)

     * MySQL compilation in different directories produced
       different builds to leakage of absolute paths into debug
       information and __FILE__. (Bug #25436469, Bug #84608)

     * mysqld_failed to start the server if the --datadir option
       was specified with a relative path name. (Bug #25364806)

     * With read_only enabled, creation of non-TEMPORARY tables
       by non-SUPER users was permitted under certain conditions. (Bug

     * Certain stored functions, if used in a query WHERE
       clause, could be handled using Index Condition Pushdown (which
       should not happen), resulting in a server exit.  (Bug #25196653,
       Bug #25174454)

     * On x86 machines, the uint3korr() macro read 4 bytes of
       data instead of the intended 3 bytes. (Bug #24807826, Bug #83264)

     * An assertion was raised during a fetch operation by the
       memcached plugin. (Bug #24605783)

     * Queries that contained UNION in a subquery and GROUP BY
       could return incorrect results. (Bug #24595639)

     * LOAD XML INFILE performance became noticeably slower when
       the XML file being read contained a great many spaces, such as
       those introduced by indenting or pretty-printing.  Now all
       leading whitespace is trimmed from each such value before reading
       it into memory. (Bug #16212207)

On behalf of the Oracle MySQL Release Engineering Team,
Nawaz Nazeer Ahamed

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Written By
MySQL Community Server 5.6.37 has been released
July 17, 2017 05:45PM

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