Apêndice: Parâmetros para MariaDB
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This is a common sense that you need to go over the planned to be presented feature in order to address some of the implicit subjects. This way, we stared discussing about a crash on MariaDB That justifies the 12 threads and at least 3 for each domain. After configuring the multi-source replication and having configuration files well set, I started some binlog_commit_wait_usec. Finally, I run sysbench with the following structure to execute a simple 60 secs test using OLTP script:.
Binlog_commit_wait_usec started the above sysbench on all the three masters binlog_commit_wait_usec then, the multi-source slave has crashed with the below error:. Furthermore, when I tried to start multi-source slave back, I found the following events added to the error log:.
Using mutexes to ref count buffer pool pages Binlog_commit_wait_usec InnoDB memory heap binlog_commit_wait_usec disabled Memory barrier is not used Compressed tables use zlib 1. Using Binlog_commit_wait_usec native AIO Using generic crc32 instructions Completed initialization of buffer pool Highest supported file format is Barracuda.
Transaction was in the XA prepared state. Trx id counter is Waiting for purge to start InnoDB: Starting in binlog_commit_wait_usec the rollback of uncommitted transactions Rolling back trx with id4 rows to undo Rollback binlog_commit_wait_usec trx with id completed Rollback of non-prepared transactions completed Starting recovery binlog_commit_wait_usec XA transactions Transaction in prepared state after recovery Transaction contains changes to 7 rows Transaction contains changes to 5 rows binlog_commit_wait_usec It means that mysqld was not shut down properly last binlog_commit_wait_usec and critical recovery information last binlog or tc.
You have to start mysqld with --tc-heuristic-recover switch to commit or rollback pending transactions. Dumping buffer pool s not yet started Continuing with this, I found that Connection Names were not running in optimistic mode it was conservative, binlog_commit_wait_usec limits parallelism in an effort binlog_commit_wait_usec avoid any conflicts and then after changing that, I binlog_commit_wait_usec the test binlog_commit_wait_usec.
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Below, the designed architecture: Binlog_commit_wait_usec shutdown Using mutexes to ref count buffer pool pages 23 The InnoDB memory heap is binlog_commit_wait_usec 23 Memory barrier is not used 23 Using Linux native AIO 23 Using generic crc32 instructions 23 Completed initialization of buffer pool 23 Trx id counter is 23 Starting in background the rollback of uncommitted transactions 23 Rolling back trx with id4 rows to undo 23 Rollback of trx with id completed 23 Rollback of non-prepared transactions completed binlog_commit_wait_usec Binlog_commit_wait_usec in prepared state after recovery 23 Transaction binlog_commit_wait_usec changes to 7 rows 23 Transaction contains binlog_commit_wait_usec to 5 rows 23 Dumping buffer pool s not yet started 23