61. Point out the wrong statement. A. A MapReduce job usually splits the input data-set into independent chunks which are processed by the map tasks in a completely parallel manner B. The MapReduce framework operates exclusively on <key, value> pairs C. Applications typically implement the Mapper and Reducer interfaces to provide the map and reduce methods D. None of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
62. . . . . . . . . is the primary interface for a user to describe a MapReduce job to the Hadoop framework for execution. A. Map Parameters B. JobConf C. MemoryConf D. None of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
63. Which of the following Hadoop streaming command option parameter is required? A. output directoryname B. mapper executable C. input directoryname D. all of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
64. . . . . . . . . maps input key/value pairs to a set of intermediate key/value pairs. A. Mapper B. Reducer C. Both Mapper and Reducer D. None of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
65. Hadoop has a library class, org.apache.hadoop.mapred.lib.FieldSelectionMapReduce, that effectively allows you to process text data like the unix . . . . . . . . utility. A. Copy B. Cut C. Paste D. Move Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
66. Point out the correct statement. A. Applications can use the Reporter to report progress B. The Hadoop MapReduce framework spawns one map task for each InputSplit generated by the InputFormat for the job C. The intermediate, sorted outputs are always stored in a simple (key-len, key, value-len, value) format D. All of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
67. The . . . . . . . . can also be used to distribute both jars and native libraries for use in the map and/or reduce tasks. A. DataCache B. DistributedData C. DistributedCache D. All of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
68. To set an environment variable in a streaming command use . . . . . . . . A. -cmden EXAMPLE_DIR=/home/example/dictionaries/ B. -cmdev EXAMPLE_DIR=/home/example/dictionaries/ C. -cmdenv EXAMPLE_DIR=/home/example/dictionaries/ D. -cmenv EXAMPLE_DIR=/home/example/dictionaries/ Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
69. Streaming supports streaming command options as well as . . . . . . . . command options. A. generic B. tool C. library D. task Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
70. . . . . . . . . is a generalization of the facility provided by the MapReduce framework to collect data output by the Mapper or the Reducer. A. Partitioner B. OutputCollector C. Reporter D. All of the mentioned Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
