Standalone mode: Does not start all components and works on a single node.
单机模式：不启动所有组件，在一个节点上工作。
Pseudo-distributed mode: Hadoop can also be run in a single node pseudo-distributed mode.
伪分布模式：Hadoop还可以以单节点的伪分布模式运行。
If you only provision a Hadoop Master node, and therefore only work on that single node, you are working in pseudo-distributed mode.
如果您只提供一个Hadoop Master节点，那么只能在一个节点上工作，即在伪分布模式下工作。
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