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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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BUG#35823 "Maria: log handler assertion (page[page_offset] & (3 << 6)) == 0x00... fails" Both random problems can be explained by the REDO phase starting from a log horizon which is not a LSN, which is the bug fixed here. storage/maria/ma_recovery.c: In Recovery, REDO phase needs to start log reading from a LSN, not a log horizon: start_address was only guaranteed to be a horizon, not necessarily a LSN. On some machine and test, it happened that start_address was only a log horizon, and run_redo_phase() tried to read from there, and log handler naturally refused that: ma_loghandler.c:6797: translog_read_record_header_from_buffer: Assertion `translog_is_LSN_chunk(page[page_offset])' failed. And in non-debug build, just the "redo phase failed" message in the error log. This was random, because depended on amount of checkpoints which is timing-dependent; also depended on Maria tests ran or skipped (so, debug or non-debug builds)... Bad code was introduced by me end of December so it's likely to explain lots of random log handler errors we observed since. |
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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.