51. You can delete a column family from a table using the method . . . . . . . . of HBAseAdmin class. A. delColumn() B. removeColumn() C. deleteColumn() 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
52. . . . . . . . . is percentage of memory relative to the maximum heap size in which map outputs may be retained during the reduce. A. mapred.job.shuffle.merge.percent B. mapred.job.reduce.input.buffer.percen C. mapred.inmem.merge.threshold D. io.sort.factor 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
53. . . . . . . . . is the primary interface for a user to describe a MapReduce job to the Hadoop framework for execution. A. JobConfig B. JobConf C. JobConfiguration 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
54. The standard output (stdout) and error (stderr) streams of the task are read by the TaskTracker and logged to . . . . . . . . A. ${HADOOP_LOG_DIR}/user B. ${HADOOP_LOG_DIR}/userlogs C. ${HADOOP_LOG_DIR}/logs 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
55. Which of the following is the default Partitioner for Mapreduce? A. MergePartitioner B. HashedPartitioner C. HashPartitioner D. None 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
56. The . . . . . . . . class provides the getValue() method to read the values from its instance. A. Get B. Result C. Put D. Value 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
57. Users can control which keys (and hence records) go to which Reducer by implementing a custom? A. Partitioner B. OutputSplit C. Reporter D. All 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
58. . . . . . . . . is the primary interface by which user-job interacts with the JobTracker. A. JobConf B. JobClient C. JobServer 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
59. Maximum virtual memory of the launched child-task is specified using . . . . . . . . A. mapv B. mapred C. mapvim 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
60. . . . . . . . . is used to filter log files from the output directory listing. A. OutputLog B. OutputLogFilter C. DistributedLog D. DistributedJars 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
