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MySQL Community Server 5.6.41 has been released




Dear MySQL users,

MySQL Server 5.6.41, a new version of the popular Open Source Database
Management System, has been released. MySQL 5.6.41 is recommended for
use on production systems.

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

http://dev.mysql.com/doc/refman/5.6/en/mysql-nutshell.html

     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
     downloaded.

For information on installing MySQL 5.6.41 on new servers or upgrading
to MySQL 5.6.41 from previous MySQL releases, please see

http://dev.mysql.com/doc/refman/5.6/en/installing.html

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

http://dev.mysql.com/downloads/

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:

https://wikis.oracle.com/display/mysql/Contributing

The following link lists the changes in the MySQL 5.6 since the release
of MySQL 5.6.40. It may also be viewed online at

http://dev.mysql.com/doc/relnotes/mysql/5.6/en/news-5-6-41.html

Enjoy!

Changes in MySQL 5.6.41 (2018-07-27, General Availability)


     * Security Notes

     * Functionality Added or Changed

     * Bugs Fixed

Security Notes


     * The linked OpenSSL library for the MySQL Commercial
       Server has been updated to version 1.0.2o. Issues fixed in the
       new OpenSSL version are described at
http://www.openssl.org/news/vulnerabilities.html. This change
       does not affect the Oracle-produced MySQL Community build of
       MySQL Server, which uses the yaSSL library instead. (Bug
       #28025379)

Functionality Added or Changed


     * Previously, for the --ssl-verify-server-cert option, the
       client checked whether the host name that it used for connecting
       matched the Common Name value in the certificate but not the
       Subject Alternative Name value.  Now, if MySQL was built using
       OpenSSL 1.0.2 or higher, the client checks whether the host name
       matches either the Subject Alternative Name value or the Common
       Name value in the server certificate. (Bug #16211011, Bug #68052,
       Bug #27511233, Bug #89578)

Bugs Fixed


     * InnoDB: A schema mismatch error reported during an import
       tablespace operation failed to print mismatched table flags in a
       readable format. (Bug #27542720)

     * InnoDB: A DDL operation failed to wait for a FULLTEXT
       index optimization operation to finish. (Bug #27326796)
       References: This issue is a regression of: Bug #24938374.

     * InnoDB: A failing assertion occurred after initiating a
       memcached get operation. (Bug #26876594)

     * InnoDB: A corrupt index ID encountered during a foreign
       key check raised an assertion. (Bug #26654685)

     * Replication: When a transaction larger than the binary
       log transaction cache size (binlog_cache_size) was flushed to a
       temporary file during processing, and the flush failed due to a
       lack of space in the temporary directory, the flush error was not
       handled correctly. No message was written to the error log, and
       the binary log cache was not cleared after the transaction was
       rolled back. Now, in this situation, the server takes an
       appropriate action based on the binlog_error_action setting (shut
       down the server or halt logging), and writes a message to the
       error log. When the transaction is rolled back, the server checks
       for flush errors and clears the binary log cache if any occurred.
       (Bug #27399620, Bug #89272)

     * Replication: When GTIDs are in use for replication,
       replicated transactions that are filtered out on the slave are
       persisted. If binary logging is enabled on the slave, the
       filtered-out transaction is written to the binary log as a
       Gtid_log_event followed by an empty transaction containing only
       BEGIN and COMMIT statements.  If binary logging is disabled, the
       GTID of the filtered-out transaction is written to the
       mysql.gtid_executed table. This process ensures that there are no
       gaps in the set of executed GTIDs, and that the filtered-out
       transactions are not retrieved again if the slave reconnects to
       the master. Previously, this process was not done for CREATE
       DATABASE, ALTER DATABASE, and DROP DATABASE statements, but it is
       now carried out for those statements as well as for others. (Bug
       #27308751, Bug #88891)

     * Replication: On a multithreaded slave, when a STOP SLAVE
       statement is executed on the slave, followed by a START SLAVE
       statement, the error log can report a different position in the
       binary log for the slave SQL thread when exiting, compared to the
       position reported for the slave SQL thread at the subsequent
       initialization.  For a multithreaded slave, the position reported
       for the SQL thread on exit is a low water mark, up to which the
       replication stream is consistent and has no gaps.  Transactions
       appearing before the position are guaranteed to have committed,
       but transactions after the position may have committed or not.
       However, this low water mark was being reported before the
       process to stop the worker threads was actually carried out, and
       the low water mark was subsequently updated by a checkpoint
       routine during that process. The timing of the log message has
       now been changed so that the final low water mark is reported as
       the position for the SQL thread on exit. (Bug #27300658)

     * A heap overflow vulnerability in the MySQL client library
       was fixed. (Bug #27980823)

     * An unencrypted connection could result from a client
       connection attempt specifying that an encrypted connection was
       required, if the server was not configured to support SSL. (Bug
       #27759871)

     * On Windows, if the Visual C++ Redistributable for Visual
       Studio had been removed, MySQL uninstallation using the MSI
       installer failed. (Bug #27621546)

     * A memory leak in the pfs-t unit test was fixed. Thanks to
       Yura Sorokin for the patch. (Bug #27440735, Bug #89384)

     * With automatic_sp_privileges enabled, the EXECUTE and
       ALTER ROUTINE privileges were not correctly granted to routine
       creators. (Bug #27407480)

     * Mishandling of internal privilege structures could cause
       a server exit. (Bug #27230925)

     * The UNION of a user-defined variable and a DECIMAL column
       produced an incorrect result when using a UTF8 character set.
       (Bug #27197235)

     * mysqldump exited abnormally for large --where option
       values. (Bug #26171967, Bug #86496, Bug #27510150)

     * For MyISAM tables, particular sequences of INSERT and
       DELETE statements could cause table corruption. (Bug #25541037)

     * FORCE INDEX had no effect on a query that used GROUP BY,
       ORDER BY, and LIMIT together. (Bug #90817, Bug #27998526)

On Behalf of MySQL Release Engineering Team,
Surabhi Bhat


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