Explanation:A RecordReader is little more than an iterator over records, and the map task uses one to generate record key-value pairs. 9. __________ controls the partitioning of the keys of the intermediate map-outputs.
A. Collector
B. Partitioner
C. InputFormat
D. None of the mentioned
Answer:A
Explanation:A RecordReader is little more than an iterator over records, and the map task uses one to generate record key-value pairs. 9. __________ controls the partitioning of the keys of the intermediate map-outputs.
A. Collector B. Partitioner C. InputFormat D. None of the mentioned
Explanation:The output of the mapper is sent to the partitioner. 10. Output of the mapper is first written on the local disk for sorting and _________ process.