Explanation:MapReduce framework and the Hadoop Distributed File System are running on the same set of nodes. 6. The key and value classes have to be _________ by the Mapreduce framework.
A. collected
B. serializable
C. compacted
D. None of the mentioned
Answer:A
Explanation:MapReduce framework and the Hadoop Distributed File System are running on the same set of nodes. 6. The key and value classes have to be _________ by the Mapreduce framework.
A. collected B. serializable C. compacted D. None of the mentioned
Explanation:Writable interface need to be implemented for key classes. 7. Key classes have to implement the __________ interface to facilitate sorting by the framework.