In this layer, they also run a second HDFS installation (with a separate name node), which acts as a hot standy - if the primary HDFS is down, the system writes to the backup HDFS.

在这个层次，运行第二个HDFS实例(使用单独的名字节点)，作为热备份——如果主HDFS宕机，系统将向备份的HDFS写入。

youdao

In this layer, they also run a second HDFS installation (with a separate name node), which acts as a hot standy - if the primary HDFS is down, the system writes to the backup HDFS.

在这个层次，运行第二个HDFS实例(使用单独的名字节点)，作为热备份——如果主HDFS宕机，系统将向备份的HDFS写入。

youdao