Hello Marko, Alexander, Thanks for your quick analysis. As I be able to reproduce crash with parallel "delete / insert", does it mean that "delete" act as truncate when there is no clause ?
Feel free to ask me if you want me to test patches. Alexander, there is nothing specific to sql_mode=ORACLE. Best regards, Jérôme. > -----Message d'origine----- > De : Alexander Barkov [mailto:b...@mariadb.org] > Envoyé : lundi 3 avril 2017 06:24 > À : Marko Mäkelä > Cc : jerome brauge; MariaDB Developers (maria- > develop...@lists.launchpad.net); Sergey Vojtovich > Objet : Re: [Maria-developers] Database corruption > > Hello Marko, Jerome, > > > Marko, thanks for your comments. > > On 04/03/2017 08:17 AM, Marko Mäkelä wrote: > > I wonder if this could be caused by missing MDL protection around > > TRUNCATE TABLE, which would then incorrectly allow concurrent INSERT > > and TRUNCATE. > > One place where MDL is definitely missing is DROP DATABASE (reported > > as > > MDEV-11342 <https://jira.mariadb.org/browse/MDEV-11342>). > > This is assigned to Sergey Vojtovich. Sergey is currently on vacation and will > be back in the last decade of April. > > Marko, do you think it is something hard to fix? > > (Sorry, I'm not strong in this area of the code) > > > > > That said, the InnoDB in MariaDB 10.2 is based on MySQL 5.7, and one > > difference between MySQL 5.6 and 5.7 is that InnoDB supports > > crash-safe atomic TRUNCATE TABLE for .ibd files (WL#6501 > > <http://dev.mysql.com/worklog/task/?id=6501>). > > > > Best regards, > > > > Marko > > -- > > DON’T MISS > > M|17 > > April 11 - 12, 2017 > > The Conrad Hotel > > New York City > > https://m17.mariadb.com/ > > > > Marko Mäkelä, Lead Developer InnoDB > > MariaDB Corporation _______________________________________________ Mailing list: https://launchpad.net/~maria-developers Post to : maria-developers@lists.launchpad.net Unsubscribe : https://launchpad.net/~maria-developers More help : https://help.launchpad.net/ListHelp
