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https://dev.mysql.com/doc/relnotes/mysql/8.4/en/news-8-4-0.html
(Bug #36118772) Warnings for unused variables are turned into compilation errors when compiling with -DMYSQL_MAINTAINER_MODE=1. Firewall Notes Following an upgrade, some MySQL Firewall stored procedures were not updated as expected. Firewall stored ...(Bug #36301441) Audit log filtering by type, using error as the type, did not work ...
https://dev.mysql.com/doc/refman/8.4/en/insert.html
| TABLE table_name | VALUES row_constructor_list } [ON DUPLICATE KEY UPDATE assignment_list] value: {expr | DEFAULT} value_list: value [, value] ... INSERT with an ON DUPLICATE KEY UPDATE clause enables existing rows to be updated if a row to be ...
https://dev.mysql.com/doc/refman/8.4/en/faqs-replication.html
This means that you should not chain two servers together in a two-way replication relationship unless you are sure that your updates can safely happen in any order, or unless you take care of mis-ordered updates somehow in the client code. For ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-option-tables.html
ndb-log-apply-status: Cause MySQL server acting as replica to log mysql.ndb_apply_status updates received from its immediate source in its own binary log, using its own server ID. ndb-log-empty-epochs: When enabled, causes epochs in which there were ... The following list includes command-line options, system variables, and status variables applicable within mysqld when it is running as an SQL node in an NDB ...
https://dev.mysql.com/doc/mysql-cluster-manager/8.4/en/mcm-attribute-tables-mysqld.html
ndb-log-apply-status: Cause MySQL server acting as replica to log mysql.ndb_apply_status updates received from its immediate source in its own binary log, using its own server ID. ndb-log-empty-epochs: When enabled, causes epochs in which there were ...ndb-blob-read-batch-bytes: Specifies size in bytes that large BLOB reads should be batched ...
https://dev.mysql.com/doc/refman/8.4/en/linux-installation-sles-repo.html
Adding the MySQL SLES Repository Add or update the official MySQL SLES repository for your system's repository list: Note The beginning part of the configuration file name, such as mysql84, describes the default MySQL series that is enabled for ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-replication-issues.html
Examples of incidents are server failures, database resynchronization, some software updates, and some hardware changes.) When the replica encounters a gap in the replication log, it stops with an error message. All SQL nodes acting as sources and ... This section discusses known problems or issues when using replication with NDB ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-programs-ndb-restore.html
Note Before using ndb_restore, it is recommended that the cluster be running in single user mode, unless you are restoring multiple data nodes in parallel. See Section 25.6.6, “NDB Cluster Single User Mode”, for more information. Important When ... The NDB Cluster restoration program is implemented as a separate command-line utility ndb_restore, which can normally be found in the MySQL bin ...
https://dev.mysql.com/doc/refman/8.4/en/replication-features-transactions.html
In general, you should avoid transactions that update both transactional and nontransactional tables in a replication environment. Otherwise, they are discarded.) For statement-based logging, logging of nontransactional statements is affected by the ...You should also avoid using any statement that accesses both transactional (or temporary) and nontransactional tables and writes to any of ...
https://dev.mysql.com/doc/ndbapi/en/ndb-ndboperation.html
To start with, use one of updateTuple(), writeTuple(), or deleteTuple() to define the operation as an operation of a given type (update, write, or delete). The steps required to release these locks are listed here: Define the primary key read ...