The purpose of this paper is to explain what is Inemuri, the cause of Inemuri, what is the uniqueness of Inemuri and the benefits of Inemuri. Inemuri is a testament to the efforts and hard work of Japanese society. Inemuri became a unique phenomenon and became a habit of Japanese people. Inemuri is a Japanese practice of sleeping in public places. The title of this research is The Unique Sleep Culture of Japan (Inemuri). Opinions expressed by DZone contributors are their own.BibTex Citation Data : = , Published at DZone with permission of Peter Zaitsev, DZone MVB. Is everything rosy when using both GTIDs and MTS? Not exactly… But that will be the topic for a separate post!īy the way, if you are in the Brussels area this weekend, come see me and other great speakers at the MySQL and friends devroom at FOSDEM! But although GTIDs are not technically necessary, you’ll be exposed to tricky situations if you If your application uses several databases and if you’re fighting with replication lag, MTS can be a great feature for you. They also help for backups because mysqldump takes the position from gtid_executed which is updated at each transaction commit (XtraBackup does that too). It doesn’t matter whether there are execution holes. Specify the transaction you will be skipping.

They help when you want to skip an event because when using GTIDs, you must explicitly The solution for both issues is to use GTIDs. The only option then seems to be: run STOP SLAVE followed by START SLAVE UNTIL SQL_AFTER_MTS_GAPS, followed by mysqldump while replication is stopped. Is stopping the slave sufficient to avoid execution gaps? Actually, no. If you cannot trust the output of SHOW SLAVE STATUS to get the current binlog position, it means that taking a backup from a slave with parallel replication is tricky.įor instance, if you run mysqldump -dump-slave=2 to get the binlog position of the master, mysqldump will first run The last thing to do is of course to resync the slave. There is a specific statement for the first part: mysql> start slave until sql_after_mts_gaps Īnd now I can finally skip the error and restart replication: So the solution to my problem is first to make sure that there is no execution gap, and only then to skip the offendingĮvent. Because the current implementation allows execution of transactions on different databases in a different order on the slave than on the master, this is not necessarily the position of the most recently executed transaction.

When using a multi-threaded slave (by setting slave_parallel_workers to a nonzero value in MySQLĥ.6.3 and later), the value in this column actually represents a “low-water” mark, before which no uncommitted transactions remain. Quoting the documentation about Exec_Master_Log_Pos: The issue is that the positions reported by SHOW SLAVE STATUS are misleading when using MTS. Note that the position reported with Exec_Master_Log_Pos has moved forward, but I still have my duplicate key error. Mysql> set global sql_slave_skip_counter=1 Last_SQL_Error: Worker 0 failed executing transaction '' at master log mysql-bin.000017, end_log_pos 1216451 Error 'Duplicate entry '1001' for key 'PRIMARY'' on query.

Bobok siang dengan