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The Hadoop locality-aware scheduler is trying to assign a map task T to the best server. The cluster has 3 racks R1, R2, and R3. Each rack Ri has 3 servers Si1, Si2, Si3. Right now, the only servers that have free containers are: S13, S31, and S32. The input file (or block) for map task T has three replicas, which HDFS has replicated at the following servers: S12, S21, and S23. Then the map task T will be scheduled at

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The Hadoop locality-aware scheduler is trying to assign a map task T to the best server. The cluster...

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