May 24, 2012

Post: Add an option to Fail on Innodb Initialize failure, Please ?

… so now MySQL does not stop if Innodb storage engine failed to initialize but starts properly… just having Innodb tables unavailable. I honestly do not….frm’ How this supposed to tell you Innodb (or for that sake any other Storage Engine) failed to initialize ? This error suppose to mean .frm file…

Comment: Add an option to Fail on Innodb Initialize failure, Please ?

… so recovery does not work Innodb will in most cases assert and crash, ie due to page read failed. Innodb fails to initialized and is disabled typically in case of configuration changes permission problems etc. Now even imagine if you have Innodb

Post: InnoDB memory allocation, ulimit, and OpenSUSE

… was an assert due to a failed malloc() in ut_malloc_low() in ut/ut0mem.c inside InnoDB source code. InnoDB wraps the majority… successfully. What was failing is the allocation of 3.37GB after that. What in the world could InnoDB need that was 3… failed right in malloc(), did not even get to initialization. I tested it with allocating 70 GB concurrently in each process so as to

Post: MySQL Error control changes

… regards to storage engine initialization. Previously if you start MySQL and Innodb storage engine fails to initialize (ie you resized log file but forgot to delete old… One thing I’m happy tables from storage engines which failed to initialize are not automatically replaced with empty MyISAM tables of the…

Comment: Innodb Performance Optimization Basics

To change innodb_log_file_size you need to shut down mysql clearly remove old log files and start it again with new value so MySQL will create new log files otherwise it will complain about wrong log file size and Innodb will fail to initialize.

Comment: MySQL Error control changes

[...] of storage engines, on the MySQL Performance Blog, Peter Zaitsev reports on changes to error control in MySQL 5.0. “Previously if you start MySQL and Innodb storage engine fails to initialize … MySQL [...]

Comment: Should you have your swap file enabled while running MySQL ?

… HugePages: 110518 11:28:32 InnoDB: Initializing buffer pool, size = 4.0G 110518 11:28:32 InnoDB: Completed initialization of buffer pool If I…: 110518 11:33:40 InnoDB: Initializing buffer pool, size = 4.0G InnoDB: HugeTLB: Warning: Failed to allocate 4412407808 bytes. errno 12 InnoDB HugeTLB: Warning: Using conventional…

Post: Optimizing InnoDB for creating 30,000 tables (and nothing else)

… would have been considered madness to even attempt to create 30,000 tables in InnoDB. That time is …in 15 minutes) hit that and the test is failed for taking too long. With libeatmydata the …higher innodb-autoextend-increment and a larger initial size. This also did not help. So how fast is InnoDB

Comment: Add an option to Fail on Innodb Initialize failure, Please ?

[...] Add an option to Fail on Innodb Initialize failure, Please ? | MySQL Performance Blog – So if a storage engine in MySQL fails to load correctly there isn’t even so much as a log entry about it? Yuck! Tags: mysql error [...]

Post: Hijacking Innodb Foreign Keys

… ! Now back to HardCore MySQL business – foreign Keys. MySQL supported Foreign Keys for Innodb for many years, yet rudimentary support initially added in… add or update a child row: a foreign key constraint fails (`test`.`child`, CONSTRAINT `child_ibfk_1` FOREIGN KEY (`parent_id…) will update references to point to new table, while you can drop Moreover Innodb is very protective when it comes to foreign constraints and…