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https://dev.mysql.com/doc/ndbapi/en/overview-cluster-concepts.html
When an application executes a transaction, it connects to one transaction coordinator on one data node. Even though a single TC is responsible for the transaction, several ACCs and TUPs on other data nodes might be involved in that transaction's ...
https://dev.mysql.com/doc/refman/8.4/en/sys-innodb-lock-waits.html
blocking_trx_age How long the blocking transaction has been executing, as a TIME value. The innodb_lock_waits and x$innodb_lock_waits views have these columns: wait_started The time at which the lock wait started. wait_age How long the lock has been ... These views summarize the InnoDB locks that transactions are waiting ...
https://dev.mysql.com/doc/workbench/en/wb-migration-install-odbc-drivers.html
Typically you need to provide a name for the data source (the DSN), in addition to the database server IP, port, username, and sometimes the database the user has access to. For each RDBMS, you need its corresponding ODBC driver, which must also be ...
https://dev.mysql.com/doc/internals/en/delete-row.html
Synopsis virtual int delete_row ( buf); const byte * buf ; Description This is the delete_row method. buf will contain a copy of the row to be deleted. The server will call this right after the current row has been called (from either a previous ...
https://dev.mysql.com/doc/internals/en/handler-instantiation.html
The first method call your storage engine needs to support is the call for a new handler instance. Before the handlerton is defined in the storage engine source file, a method header for the instantiation method must be defined. Here is an example ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-limitations-syntax.html
Some SQL statements relating to certain MySQL features produce errors when used with NDB tables, as described in the following list: Temporary tables. Trying either to create a temporary table that uses the NDB storage engine or to alter an ...Keys ...
https://dev.mysql.com/doc/refman/8.4/en/version-tokens-reference.html
Timeout values are nonnegative integers representing the time in seconds to wait to acquire locks before timing out with an error. mysql> SELECT version_tokens_lock_exclusive('lock1', 'lock2', 10); ...(It is not an error to delete nonexisting ...
https://dev.mysql.com/doc/internals/en/source-files-related-to-the-binary-log.html
rpl_utility.h /rpl_utility.cc: Contains auxiliary classes and functions used for Table_map_events, and also an auxiliary class for smart pointers sql_binlog.cc : Code to execute BINLOG statements (the base64-encoded values that mysqlbinlog prints ...
https://dev.mysql.com/doc/relnotes/mysql-cluster/8.4/en/news-8-4-4.html
Replica skip error functionality was also affected in that it attempted to skip only the error that occurred when a transaction was committed a second time. Handling of DBTC and API state alignment errors has been improved by this set of fixes, as ...(Bug #37201922) NDB Replication: The replication applier normally retries temporary errors occurring while applying ... MySQL NDB Cluster 8.4.4 is a new LTS release of NDB 8.4, based on MySQL Server 8.4 and including ...
https://dev.mysql.com/doc/relnotes/heatwave/en/news-8-0-30.html
Recommendations are based on performance models that use query execution data. (Bug #34145862) MySQL HeatWave AutoML You can now train MySQL HeatWave AutoML models on tables containing DATE, TIME, DATETIME, TIMESTAMP, and YEAR data types. MySQL ...