MapReduce Features MCQ

Test your knowledge with important MapReduce Features MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more MapReduce Features MCQs on Bissoy. Bissoy App

• __________ is used to filter log files from the output directory listing.
  ক

  OutputLog

  খ

  OutputLogFilter

  গ

  DistributedLog

  ঘ

  DistributedJars
• The _____________ can also be used to distribute both jars and native libraries for use in the map and/or reduce tasks.
  ক

  DistributedLog

  খ

  DistributedCache

  গ

  DistributedJars

  ঘ

  None of the mentioned
• ____________ is the primary interface by which user-job interacts with the JobTracker.
  ক

  JobConf

  খ

  JobClient

  গ

  JobServer

  ঘ

  All of the mentioned
• The standard output (stdout) and error (stderr) streams of the task are read by the TaskTracker and logged to _________
  ক

  ${HADOOP_LOG_DIR}/user

  খ

  ${HADOOP_LOG_DIR}/userlogs

  গ

  ${HADOOP_LOG_DIR}/logs

  ঘ

  None of the mentioned
• During the execution of a streaming job, the names of the _______ parameters are transformed.
  ক

  vmap

  খ

  mapvim

  গ

  mapreduce

  ঘ

  mapred
• Jobs can enable task JVMs to be reused by specifying the job configuration _________
  ক

  mapred.job.recycle.jvm.num.tasks

  খ

  mapissue.job.reuse.jvm.num.tasks

  গ

  mapred.job.reuse.jvm.num.tasks

  ঘ

  all of the mentioned
• Map output larger than ___________ percent of the memory allocated to copying map outputs.
  ক

  10

  খ

  15

  গ

  25

  ঘ

  35
• ____________ specifies the number of segments on disk to be merged at the same time.
  ক

  mapred.job.shuffle.merge.percent

  খ

  mapred.job.reduce.input.buffer.percen

  গ

  mapred.inmem.merge.threshold

  ঘ

  io.sort.factor
• ______________ is percentage of memory relative to the maximum heap size in which map outputs may be retained during the reduce.
  ক

  mapred.job.shuffle.merge.percent

  খ

  mapred.job.reduce.input.buffer.percen

  গ

  mapred.inmem.merge.threshold

  ঘ

  io.sort.factor
• Which of the following parameter is the threshold for the accounting and serialization buffers?
  ক

  io.sort.spill.percent

  খ

  io.sort.record.percent

  গ

  io.sort.mb

  ঘ

  None of the mentioned
• Maximum virtual memory of the launched child-task is specified using _________
  ক

  mapv

  খ

  mapred

  গ

  mapvim

  ঘ

  All of the mentioned
• The ___________ executes the Mapper/ Reducer task as a child process in a separate jvm.
  ক

  JobTracker

  খ

  TaskTracker

  গ

  TaskScheduler

  ঘ

  None of the mentioned
• __________ is the primary interface for a user to describe a MapReduce job to the Hadoop framework for execution.
  ক

  JobConfig

  খ

  JobConf

  গ

  JobConfiguration

  ঘ

  All of the mentioned
• ____________ is a generalization of the facility provided by the MapReduce framework to collect data output by the Mapper or the Reducer.
  ক

  OutputCompactor

  খ

  OutputCollector

  গ

  InputCollector

  ঘ

  All of the mentioned
• Which of the following partitions the key space?
  ক

  Partitioner

  খ

  Compactor

  গ

  Collector

  ঘ

  All of the mentioned
• Which of the following is the default Partitioner for Mapreduce?
  ক

  MergePartitioner

  খ

  HashedPartitioner

  গ

  HashPartitioner

  ঘ

  None of the mentioned