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https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-start-phases.html
This occurs either when the cluster started for the very first time, or when all data nodes are restarted using the --initial option. This section provides a simplified outline of the steps involved when NDB Cluster data nodes are started. More ...
https://dev.mysql.com/doc/refman/8.0/en/load-data-local-security.html
(This is a change from previous versions of MySQL.) To cause the server to refuse or permit LOAD DATA LOCAL statements explicitly (regardless of how client programs and libraries are configured at build time or runtime), start mysqld with ...In this ... The LOAD DATA statement loads a data file into a ...
https://dev.mysql.com/doc/refman/8.0/en/error-lost-connection.html
Sometimes the “during query” form happens when millions of rows are being sent as part of one or more queries. If you know that this is happening, you should try increasing net_read_timeout from its default of 30 seconds to 60 seconds or longer, ...Usually it indicates network connectivity trouble and you should check the condition of your network if this error occurs ...
https://dev.mysql.com/doc/refman/8.0/en/faqs.html
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https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-backup-configuration.html
Five configuration parameters are essential for backup: BackupDataBufferSize The amount of memory used to buffer data before it is written to disk. BackupLogBufferSize The amount of memory used to buffer log records before these are written to disk. BackupMemory The total memory allocated in a data node for ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-backup-parallel-data-nodes.html
It is possible in NDB 8.0 to take a backup with multiple local data managers (LDMs) acting in parallel on the data nodes. For this to work, all data nodes in the cluster must use multiple LDMs, and each data node must use the same number of LDMs.
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-backup-troubleshooting.html
If an error code is returned when issuing a backup request, the most likely cause is insufficient memory or disk space. You should check that there is enough memory allocated for the backup. Important If you have set BackupDataBufferSize and ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-backup-using-management-client.html
Before starting a backup, make sure that the cluster is properly configured for performing one. If an existing backup_id value is used, the backup fails with the error Backup failed: file already exists. If used, the backup_id must follow ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-backup.html
To distinguish this type of backup from a backup made using mysqldump, we sometimes refer to it as a “native” NDB Cluster backup. The next few sections describe how to prepare for and then to create an NDB Cluster backup using the functionality ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-computer-definition.html
The [computer] section has no real significance other than serving as a way to avoid the need of defining host names for each node in the system. Id Version (or later) NDB 8.0.13 Type or units string Default [...] Range ... Restart Type Initial ...