Changes in MySQL 5.5.37 (2014-03-27, General Availability)

• Functionality Added or Changed

• Bugs Fixed

Functionality Added or Changed

• Solaris: On Solaris, mysql_config --libs now includes -R/path/to/library so that libraries can be found at runtime. (Bug #18235669)

Bugs Fixed

• InnoDB: A regression introduced by Bug #14329288 would result in a performance degradation when a compressed table does not fit into memory. (Bug #18124788, Bug #71436)

  References: This issue is a regression of: Bug #14329288.

• InnoDB: The maximum value for innodb_thread_sleep_delay is now 1000000 microseconds. The previous maximum value (4294967295 microseconds on 32-bit and 18446744073709551615 microseconds on 64-bit) was unnecessarily large. Because the maximum value of innodb_thread_sleep_delay is limited by the value set for innodb_adaptive_max_sleep_delay (when set to a nonzero value), the maximum value for innodb_thread_sleep_delay is now the same as the maximum value for innodb_adaptive_max_sleep_delay. (Bug #18117322)

• InnoDB: In debug builds, creating a unique index on a binary column, with input data containing duplicate keys, would cause an assertion. (Bug #18010711)

• InnoDB: InnoDB failed to start when innodb_data_file_path specified the data file size in kilobytes by appending K to the size value. (Bug #16287752)

• InnoDB: An insert buffer merge would cause an assertion error due to incorrectly handled ownership information for externally stored BLOBs.

  InnoDB: Assertion failure in thread thread_num in file ibuf0ibuf.cc line 4080
  InnoDB: Failing assertion: rec_get_deleted_flag(rec, page_is_comp(page))

  (Bug #14668683)

• InnoDB: Decreasing the auto_increment_increment value would have no affect on the next auto-increment value. (Bug #14049391, Bug #65225)

• Replication: The server did not handle correctly the insertion of a row larger than 4 GB when using row-based replication. (Bug #17081415)

• Replication: When using row-based replication, an additional auto-increment column on the slave version of a table was not updated correctly; a zero was inserted instead. (Bug #17066269, Bug #69680)

• Replication: Statements involving the Performance Schema tables should not be written to the binary log, because the content of these tables is applicable only to a given MySQL Server instance, and may differ greatly between different servers in a replication topology. The database administrator should be able to configure (INSERT, UPDATE, or DELETE) or flush (TRUNCATE TABLE) performance schema tables on a single server without affecting others. However, when replicating from a MySQL 5.5 master to a MySQL 5.5 or later slave, warnings about unsafe statements updating Performance Schema tables were elevated to errors. For MySQL 5.6 and later slaves, this prevented the simultaneous use of performance_schema and GTIDs (see Replication with Global Transaction Identifiers, in the MySQL 5.6 Manual).

  This fix causes all updates on tables in the performance_schema database to be filtered on the master and not replicated, regardless of the type of logging that is in effect. Prior to this fix, statements using were handled by being marked as unsafe for replication, which caused warnings during execution; the statements were nonetheless written to the binary log, regardless of the logging format in effect.

  Existing replication behavior for tables in the INFORMATION_SCHEMA database is not changed by this fix.

  For more information, see MySQL Performance Schema. (Bug #16814264)

  References: See also: Bug #14741537, Bug #18259193.

• While printing the server version, the mysql client did not check for buffer overflow in a string variable. (Bug #18186103)

• Compilation failed if MySQL was configured with CFLAGS set to include a -Werror option with an argument. (Bug #18173037)

• A shared libmysqld embedded server library was not built on Linux. A new WITH_EMBEDDED_SHARED_LIBRARY CMake option now makes this possible. (Bug #18123048, Bug #16430656, Bug #68559)

• Contraction information in a collation could be mishandled, resulting in incorrect decisions about whether a character is part of a contraction, and miscalculation of contraction weights. (Bug #17760379)

• DROP TRIGGER succeeded even with the read_only system variable enabled. (Bug #17503460)

• Updating the setup_instruments Performance Schema table on a replication master caused a slave to exit. (Bug #14539290)

• When run by root, mysqld --help --verbose exited with a nonzero error code after displaying the help message. (Bug #70058, Bug #17324415)

• A deadlock error occurring during subquery execution could cause an assertion to be raised. (Bug #69969, Bug #17307201)

• For system variables that take a string value, SET statements permitted an unquoted value, but values that contained dots were parsed incorrectly and only part of the value was assigned. For example, SET GLOBAL slow_query_log_file = my_slow.log assigned the value my_slow. Now such values must be quoted or an error occurs. (Bug #69703, Bug #17075846)

• MySQL client programs from a Community Edition distribution could not connect using SSL to a MySQL server from an Enterprise Edition. This was due to a difference in certificate handling by yaSSL and OpenSSL (used for Community and Enterprise, respectively). OpenSSL expected a blank certificate to be sent when not all of the --ssl-ca, --ssl-cert, and --ssl-key options were specified, and yaSSL did not do so. To resolve this, yaSSL has been modified to send a blank certificate when an option is missing. (Bug #68788, Bug #16715064)

• Due to a race condition, it was possible for two threads to end up with the same query ID for different queries. (Bug #58785, Bug #11765785)

• On Windows, mysql_install_db.pl could be run only from within the bin directory under the installation directory. (Bug #42421, Bug #11751526)