The capacity scheduler is allocating resources. There are two queues Q1 and Q2 at the same level, and their capacities are both 30. Among them, Q1 has used 8 and Q2 has used 14, and resources will be allocated to Q1 first.
In MapReduce programming, code not only describes what to do, but also how to do it.
About HDFSThe function of the NameNode, which one of the following descriptions is wrong?
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