ER works by reading the logical logs, testing if a log record needs to be replicated, and finally sending that information to the appropriate participants.
ER首先读取逻辑日志，检验日志记录是否需要复制，最后将这些信息发送给相应的参与节点。
While this section is far from complete, it should be a good starting reference to be supplemented by additional reading in the freely available source change logs.
虽然本节的内容还远远不够完全，但它应该是一个不错的起点参考资料，通过另外阅读一些可免费获得的源代码修改日志，可以补充这方面的知识。
HDR secondary goes to standard mode after reading all logs from staged.
在从暂存日志读取所有数据之后，HD r次要服务器将回到标准模式下。
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