Online Access Free CCA-500 Exam Questions

During the execution of a MapReduce v2 (MRv2) job on YARN, where does the Mapper place the intermediate data of
each Map Task?

• A.The Mapper stores the intermediate data on the underlying filesystem of the local disk in the directories
  yarn.nodemanager.locak-DIFS
• B.The Mapper stores the intermediate data in HDFS on the node where the Map tasks ran in the HDFS
  /usercache/&(user)/apache/application_&(appid) directory for the user who ran the job
• C.The Mapper transfers the intermediate data immediately to the reducers as it is generated by the Map Task
• D.YARN holds the intermediate data in the NodeManager's memory (a container) until it is transferred to the Reducer
• E.The Mapper stores the intermediate data on the node running the Job's ApplicationMaster so that it is available to
  YARN ShuffleService before the data is presented to the Reducer

Your company stores user profile records in an OLTP databases. You want to join these records with web server logs
you have already ingested into the Hadoop file system. What is the best way to obtain and ingest these user records?

• A.Ingest using the HDFS put command
• B.Ingest with Hadoop streaming
• C.Ingest with sqoop import
• D.Ingest using Hive's IQAD DATA command
• E.Ingest with Pig's LOAD command

Which process instantiates user code, and executes map and reduce tasks on a cluster running MapReduce v2 (MRv2)
on YARN?

• A.NameNode
• B.NodeManager
• C.ApplicationMaster
• D.ResourceManager
• E.TaskTracker
• F.JobTracker
• G.DataNode

Table schemas in Hive are:

• A.Stored along with the data in HDFS
• B.Stored in ZooKeeper
• C.Stored in the Metadata
• D.Stored as metadata on the NameNode

Your cluster is running MapReduce version 2 (MRv2) on YARN. Your ResourceManager is configured to use the
FairScheduler. Now you want to configure your scheduler such that a new user on the cluster can submit jobs into
their own queue application submission. Which configuration should you set?

• A.You can specify new queue name when user submits a job and new queue can be created dynamically if the
  property yarn.scheduler.fair.allow-undecleared-pools = true
• B.You can specify new queue name per application in allocations.xml file and have new jobs automatically assigned
  to the application queue
• C.You can specify new queue name when user submits a job and new queue can be created dynamically if yarn
  .schedule.fair.user-as-default-queue = false
• D.Yarn.scheduler.fair.user.fair-as-default-queue = false and yarn.scheduler.fair.allowundecleared-
  pools = true