MySQL Cluster - node用語変更

MySQL Reference Manual :: 16.1 MySQL Cluster Glossary

• Management (MGM) nodes: Manages the other nodes within the MySQL Cluster. It provides configuration data to the other nodes; starts and stops nodes; insures that transactions are properly committed and logged; creates backups and restores from them, and so forth.
  
• SQL (server) nodes: Instances of MySQL Server which serve as front ends to data kept in the cluster's storage nodes. Clients desiring to store, retrieve, or update data can access an SQL node just as they would any other MySQL Server, employing the usual authentication methods and API's; the underlying distribution of data between node groups is transparent to users and applications. SQL nodes access the cluster's databases as a whole without regard to the data's distribution across different storage nodes or cluster hosts.
  
• Data nodes (also referred to as storage nodes): These nodes store the actual data. Table data fragments are stored in a set of node groups; each node group stores a different subset of the table data. Each of the nodes making up a node group stores a replica of the fragment for which that node group is responsible. Currently a single cluster can support a total of up to 48 data nodes.

用語の変更
日本語で書く際も、
Managementノード
SQLノード
Dataノード
とした方が良さそう。

（managementの略語は、通常はmgmtなのでmgmは　おかしい！というコメントがMySQL再度より　あったので。クラスタチームは英語nativeでは無いために間違えたか？）

Dataノードは、DBノード、Storageノードなど、呼び方が色々変更されて　混乱しそう。