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https://dev.mysql.com/doc/mysql-monitor/8.0/en/duplicateserverid-advisor-ref.html
Tracks instances whose UUID is duplicated or becomes associated with multiple, different host names, or connections, over a specific time period. These changes are measured by rate, that is, by a defined number of changes over the defined time ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-ndbinfo-transporter-details.html
sendbuffer_max_used_bytes The maximum amount, in bytes, of signal data awaiting send at any one time by this transporter. sendbuffer_max_alloc_bytes Maxmimum amount of send buffer, in bytes, allocated for signal data storage at any one time for this ... This table contains information about individual NDB transporters, rather than aggregate information as shown by the transporters ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-ndbinfo-locks-per-fragment.html
This table also shows the total time spent waiting for locks successfully and unsuccessfully since fragment or table creation, or since the most recent restart. This is also true for the time values shown in the wait_ok_millis and wait_fail_millis ... The locks_per_fragment table provides information about counts of lock claim requests, and the outcomes of these requests on a per-fragment basis, serving as a companion table to operations_per_fragment and ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-programs-ndb-waiter.html
ndb_waiter repeatedly (each 100 milliseconds) prints out the status of all cluster data nodes until either the cluster reaches a given status or the --timeout limit is exceeded, then exits. --connect-retries Command-Line Format --connect-retries=# ...By default, it waits for the cluster to achieve STARTED status, in which all nodes have started and connected to the ...
https://dev.mysql.com/doc/relnotes/connector-python/en/news-9-2-0.html
Functionality Added or Changed Bugs Fixed Functionality Added or Changed Added two new connection options: read_timeout (time limit to receive a response from the server) and write_timeout (time limit to send data to the server). Both options ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-shm-definition.html
For optimum performance, you can define a spin time for the SHM transporter (ShmSpinTime parameter); this affects both the data node receiver thread and the poll owner (receive thread or user thread) in NDB. ShmSpinTime Version (or later) NDB 8.4.0 ... Communications between NDB cluster nodes are normally handled using ...
https://dev.mysql.com/doc/internals/en/join-buffer-size.html
(In other words, we store the same row combination several times into different buffers.) . Basic information about the join buffer cache: The size of each join buffer is determined by the value of the join_buffer_size system variable. This buffer ...
https://dev.mysql.com/doc/relnotes/connector-cpp/en/news-8-0-21.html
(WL #13061) Functionality Added or Changed The MySQL_Connection_Options enumeration is no longer sensitive to the order in which the underlying options are declared in the C API source. (Bug #30799197) Connector/C++ now implements blocking of failed ... Configuration Notes JSON Notes Security Notes X DevAPI Notes Functionality Added or Changed Bugs Fixed Configuration Notes The CMake configuration files were revised to work better when Connector/C++ is used as a subproject of application ...
https://dev.mysql.com/doc/relnotes/connector-python/en/news-8-0-16.html
(WL #12863) For X DevAPI applications, Connector/Python now supports the ability to send connection attributes (key-value pairs that application programs can pass to the server at connect time). An example connection string: ... Functionality Added ...
https://dev.mysql.com/doc/relnotes/connector-python/en/news-8-0-31.html
(Bug #21529893) The MySQLConnection.set_charset_collation() method returned an UnboundLocalError exception when given a empty character set name; now the default character set is used in such cases. (Bug #107406, Bug #34217492) The binary protocol ... Functionality Added or Changed Bugs Fixed Functionality Added or Changed Added support for Python ...