61. The output of the reduce task is typically written to the FileSystem via . . . . . . . . A. OutputCollector.collect B. OutputCollector.get C. OutputCollector.receive D. OutputCollector.put 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
62. The . . . . . . . . executes the Mapper/ Reducer task as a child process in a separate jvm. A. JobTracker B. TaskTracker C. TaskScheduler 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
63. Point out the correct statement. A. The number of sorted map outputs fetched into memory before being merged to disk B. The memory threshold for fetched map outputs before an in-memory merge is finished C. The percentage of memory relative to the maximum heap size in which map outputs may not be retained during the reduce 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
64. . . . . . . . . communicate with the client and handle data-related operations. A. Master Server B. Region Server C. Htable 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
65. During the execution of a streaming job, the names of the . . . . . . . . parameters are transformed. A. vmap B. mapvim C. mapreduce D. mapred 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
66. Point out the wrong statement. A. The Mapper outputs are sorted and then partitioned per Reducer B. The total number of partitions is the same as the number of reduce tasks for the job C. The intermediate, sorted outputs are always stored in a simple (key-len, key, value-len, value) format 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
67. Point out the correct statement. A. The right number of reduces seems to be 0.95 or 1.75 B. Increasing the number of reduces increases the framework overhead C. With 0.95 all of the reduces can launch immediately and start transferring map outputs as the maps finish 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. The number of reduces for the job is set by the user via . . . . . . . . A. JobConf.setNumTasks(int) B. JobConf.setNumReduceTasks(int) C. JobConf.setNumMapTasks(int) 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
69. The framework groups Reducer inputs by key in . . . . . . . . stage. A. sort B. shuffle C. reduce 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
70. Point out the wrong statement. A. To read data from an HBase table, use the get() method of the HTable class B. You can retrieve data from the HBase table using the get() method of the HTable class C. While retrieving data, you can get a single row by id, or get a set of rows by a set of row ids, or scan an entire table or a subset of rows 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
