每个资源有一个主节点实例,这个实例记录了它当前的状态。
Each resource has a master instance that records its current status.
但是如果任何实例记录了错误,在关闭网格之前下载它们非常重要,否则测试结果将丢失。
But if any of the instances logged errors, it's important to download them before shutting down the grid or the test results will be lost.
一个活动记录的每个实例都关系到数据库内的特定行。
Each instance of an active record class is tied to a specific row in a database.
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