主复制要求所有节点通过访问主节点来获得关于表、列和主键的字典信息。

Master replicates require all nodes to access the master node to obtain the dictionary information about tables, columns, and primary keys.

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每个节点通过此节点的properties属性声明当前安装的那个执行环境。

Every node declares the execution environment currently installed by way of the properties attribute of the node.

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图4 . Delimited——FileInput节点通过确定分隔符来拆分每次传播。

Figure 4. Delimited — Each propagation is split from the next by the FileInput node identifying delimiter characters.

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