有两个 INFORMATION_SCHEMA 表提供的信息在管理 NDB Cluster 时特别有用。FILES 表提供关于 NDB Cluster 磁盘数据文件的信息(见 第 25.6.11.1 节,“NDB Cluster 磁盘数据对象”)。ndb_transid_mysql_connection_map 表提供事务、事务协调器和 API 节点之间的映射关系。Two INFORMATION_SCHEMA tables provide
information that is of particular use when managing an NDB
Cluster. The FILES table provides
information about NDB Cluster Disk Data files (see
Section 25.6.11.1, “NDB Cluster Disk Data Objects”). The
ndb_transid_mysql_connection_map
table provides a mapping between transactions, transaction
coordinators, and API nodes.
关于 NDB 集群事务、操作、线程、块以及性能的其他方面的统计数据和其他数据,可以从 ndbinfo 数据库中的表中获取。有关这些表的信息,请参见 第 25.6.15 节,“ndbinfo: NDB 集群信息数据库”。Additional statistical and other data about NDB Cluster
transactions, operations, threads, blocks, and other aspects of
performance can be obtained from the tables in the
ndbinfo database. For
information about these tables, see
Section 25.6.15, “ndbinfo: The NDB Cluster Information Database”.