Scaling down is like a failback operation without the task of bringing the primary node up.

In the example environment, running lspv on the primary node confirms the shared volume group is in concurrent mode.

在示例环境中，在主节点上运行lspv以确认共享卷组处于并发模式。

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The middle column should be the hostname of the primary node.

中间一列应该是主节点的主机名。

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The DB2 database installed with the primary node is automatically used by all other nodes in the cluster.

与主节点安装在一起的DB2数据库自动被集群中所有其他节点使用。

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Instead, every time a disk write is issued, that write is done on the primary node and sent over to the backup node and written to disk there, as well.

相反，每次有一个磁盘写入操作发出时，就会在主节点上执行该操作，并且也会被发送到备份节点，在那里的磁盘上完成此写入操作。

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Use the ps command to make sure WebSphere MQ is running on the primary node.

可以使用ps命令来确认WebSphere MQ正在主节点上运行。

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Note that I am using the cluster address in the above URLs and not the address of the primary node.

注意，在上面我使用的是群集地址，而不是主节点的地址。

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This is usually easiest by focusing on the primary node of a domain.

这可以通过聚焦域中的主要节点实现。

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Allow the secondary node to access objects backed up on the primary node ( this has to be done on the primary machine)

允许辅助节点访问备份在主节点上的对象（必须在主机器上完成）

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Every node has one and only one primary node type.

每个节点都有且只有一个主节点类型。

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Upon failure of the primary node the redundant node takes over.

在主节点发生故障时，冗余节点可以接管。

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There can be up to7 servers in a cluster, and any node can be the primary node.

一个集群最多可以支持7个服务器，并且任意节点都可以是主节点。

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It is understood that the lymphoma is a primary node or other lymphoid tissues of malignant tumors, is a system originated in hematopoietic malignancies, the disease can occur at any age.

据了解，淋巴癌是原发于淋巴结或其他淋巴组织的恶性肿瘤，是一种起源于造血系统的恶性肿瘤，这种病可发生于任何年龄。

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All probes will be active, but only the primary node will forward monitored transactions.

所有探测器都是活跃的，但是只有主节点会转发监视的事务。

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The increasing CPU utilization is attributed to unnecessary node hops for interrupts being taken on Ethernet adapters on non-primary nodes but being processed on CPUs on the primary node.

CPU利用率快速增加的原因是，在非主节点上的以太网适配器中接收的中断却在主节点的CPU上处理，这导致了不必要的节点跳转。

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Change the hostname of the secondary node to the primary node's hostname.

把辅助节点的主机名改为主节点的主机名。

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Once the MapReduce operation for a particular search key is completed, the NameNode returns the output value to the server and in turn to the client.

完成特定的搜索关键字MapReduce操作之后，NameNode将输出值返回到服务器并交付客户端。

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At this point, the NameNode commits the file creation operation into a persistent store.

此时Namenode才将文件创建操作提交到持久存储。

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You'll find one namenode and one secondary namenode in a Hadoop cluster.

在每个Hadoop集群中可以找到一个namenode和一个secondary namenode。

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For this reason, the NameNode can be configured to support maintaining multiple copies of the FsImage and EditLog.

因而，Namenode可以配置成支持维护多个FsImage和Editlog的拷贝。

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The NameNode uses a transaction log called the EditLog to persistently record every change that occurs to file system metadata.

对于任何对文件元数据产生修改的操作，Namenode都使用一个称为Editlog的事务日志记录下来。

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