89539

System reset (cluster reset).

To reset the cluster because it has reached an undesirable State. In such cases it is often desirable to

reload the data and metadata of one or morę data nodes. This can be done in any of three ways:

•    Start each data node process (ndbd or possibly ndbmtd) with the —initial [2330] option, which

forces the data node to elear its file system and to reload all MySQL Cluster data and

metadata from

the other data nodes.

•    Create a backup using the ndb_mgm Client BACKUP command prior to performing the restart.

Following the upgrade, restore the node or nodes using ndb_restore.

See Section 17.5.3, “Online Backup of MySQL Cluster”, and Section 17.4.19,

^undb_restore —

Restore a MySQL Cluster Backup", for morę information.

•    Use mysąldump to create a backup prior to the upgrade; afterward, restore the dump using LOAD

DATA INF ILE.