May 25, 2012

Post: Troubleshooting Relay Log Corruption in MySQL

…’s relay log, you will be able to know their names by issuing ‘SHOW SLAVE STATUS’ on this slave. This is relay relay log corruption and you can check details in the MySQL Error log file. The error message describes few… to show up in relay logs. Really this is only one of various error messages you could see if relay log corrupted. You could also…

Post: MySQL Crash Recovery

… well as many other operations, so beware. Binary log corruption – Binary log may become corrupted and out of sync with database content. This will… most vulnerable. master.info corruption – If slave happens to crash you can also have relay logs corruption and master.info being corrupted. Not to mention…

Post: Recovery beyond data restore

… seriously behind you’re risking to get major inconsistence because relay logs will be lost if you just re-point slave. So… process all its relay logs before re-pointing it. Interesting enough Google has solution for us again which comes as “log mirroring” patches… as shortcut) – for example you may have master or relay binary log corruption. Master or Slave running out of space, Slave crashing (and…

Post: Percona Server 5.5.10 (Release Candidate)

… Kinoshita) Old system variable log_warnings_silence was renamed to log_warnings_suppress. (Oleg Tsarev) Old system variable log_slow_timestamp_every was…_overwrite_relay_log_info was renamed to innodb_recovery_update_relay_log. (Yasufumi Kinoshita) Old system variable innodb_pass_corrupt_table was renamed to innodb_corrupt

Post: Innodb Undelete and Sphinx Support

log, corrupted binary log and dig into MyISAM tables. You would ask who would ever need such recovery services – should not people just relay…, yet another nice case is weekly backups with no binary log enabled when managed hosting support would happily point to the…

Post: Percona Server 5.5.17-22.1 released

… have SHOW SLAVE STATUS give incorrect output due to a corrupted relay log. Bug Fixed: #860910 (Alexey Kopytov).

Comment: Falcon Storage Engine Design Review

…), some are environment related – log flushing on transaction commit, size of log files etc. Regarding design -… fixed. No Clustered Index: I think you relay on row cache too much. If working …tracing bad memory or hardware melt down before corruption spread all around database. Some other techniques …