The secondary node is promoted to primary if the clustering solution detects that the primary node is down.
如果集群解决方案检测到主节点故障,辅助节点升为主节点。
2
One of the servers is commonly defined as the primary and the other secondary (typically as part of a clustering solution).
其中一个服务器被定义为主服务器,另一个是辅助服务器(通常是集群解决方案的一部分)。
3
Although relatively young in open source terms, Mahout already has a large amount of functionality, especially in relation to clustering and CF. Mahout's primary features are.