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MariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry.
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Main problem: mysql 5.1 cannot read binlogs from 4.1. Subproblem 1: There is a mistake in sql_ex_info::init. The read_str() function updates its first argument to point to the next character to read. However, it is applied only to a copy of the buffer pointer, so the real buffer pointer is not updated. Fix 1: do not take a copy of the buffer pointer. The copy was needed because sql_ex_info::init does not use the const attribute on some of its arguments. So we add the const attribute, too. Subproblem 2: The first BINLOG statement is asserted to be a FORMAT_DESCRIPTION_LOG_EVENT, but 4.1 binlogs begin with START_EVENT_V3. Fix 2: allow START_EVENT_V3 too. mysql-test/suite/binlog/std_data/binlog_old_version_4_1.000001: New BitKeeper file ``mysql-test/suite/binlog/std_data/binlog_old_version_4_1.000001'' mysql-test/suite/binlog/r/binlog_old_versions.result: Updated result file. mysql-test/suite/binlog/t/binlog_old_versions.test: Added a test reading an old 4.1 binlog. sql/log_event.cc: 1. Added const keyword at the following places: - input buffer for pretty_print_str - input buffer for write_str - input buffer, end pointer, and return value from sql_ex_info::init 2. Fixed the bug by not taking a copy of buf before calling read_str in sql_ex_info::init(). sql/log_event.h: Added const keyword to fields of the sql_ex_info struct. Added const keyword to arguments and return value of sql_ex_info::init sql/sql_binlog.cc: The first BINLOG statement must describe the format for future BINLOG statements. Otherwise, we do not know how to read the BINLOG statement. Problem: only FORMAT_DESCRIPTION_EVENT is currently allowed as the first event. Binlogs from 4.1 begin with a START_EVENT_V3, which serves the same purpose. Fix: We now allow the first BINLOG statement to be a START_EVENT_V3, as well as a FORMAT_DESCRIPTION_EVENT. |
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| BitKeeper | ||
| BUILD | ||
| client | ||
| cmd-line-utils | ||
| config/ac-macros | ||
| dbug | ||
| Docs | ||
| extra | ||
| include | ||
| libmysql | ||
| libmysql_r | ||
| libmysqld | ||
| man | ||
| mysql-test | ||
| mysys | ||
| netware | ||
| plugin | ||
| pstack | ||
| regex | ||
| scripts | ||
| server-tools | ||
| sql | ||
| sql-bench | ||
| sql-common | ||
| storage | ||
| strings | ||
| support-files | ||
| tests | ||
| unittest | ||
| vio | ||
| win | ||
| zlib | ||
| .bzrignore | ||
| .cvsignore | ||
| CMakeLists.txt | ||
| configure.in | ||
| COPYING | ||
| EXCEPTIONS-CLIENT | ||
| INSTALL-SOURCE | ||
| INSTALL-WIN-SOURCE | ||
| Makefile.am | ||
| README | ||
This is a release of MySQL, a dual-license SQL database server. MySQL is brought to you by the MySQL team at MySQL AB. License information can be found in these files: - For GPL (free) distributions, see the COPYING file and the EXCEPTIONS-CLIENT file. - For commercial distributions, see the LICENSE.mysql file. For further information about MySQL or additional documentation, see: - The latest information about MySQL: http://www.mysql.com - The current MySQL documentation: http://dev.mysql.com/doc Some manual sections of special interest: - If you are migrating from an older version of MySQL, please read the "Upgrading from..." section first! - To see what MySQL can do, take a look at the features section. - For installation instructions, see the Installing and Upgrading chapter. - For the new features/bugfix history, see the Change History appendix. - For the currently known bugs/misfeatures (known errors) see the Problems and Common Errors appendix. - For a list of developers and other contributors, see the Credits appendix. A local copy of the MySQL Reference Manual can be found in the Docs directory in GNU Info format. You can also browse the manual online or download it in any of several formats at the URL given earlier in this file. ************************************************************ IMPORTANT: Bug or error reports should be sent to http://bugs.mysql.com.