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NO.1 You are running a Hadoop cluster with MapReduce version 2 (MRv2) on YARN.
You consistently
see that MapReduce map tasks on your cluster are running
slowly because of excessive garbage
collection of JVM, how do you increase
JVM heap size property to 3GB to optimize performance?
A.
mapreduce.map.java.opts=-Xms3072m
B.
yarn.application.child.java.opts=-Xmx3072m
C.
yarn.application.child.java.opts=-Xsx3072m
D.
mapreduce.map.java.opts=-Xmx3072m
Answer: A
CCA-500 Exam
Cram
NO.2 Which YARN daemon or service monitors a Controller's
per-application resource using (e.g.,
memory CPU)?
A.
ResourceManager
B. NodeManager
C. ApplicationMaster
D.
ApplicationManagerService
Answer: C
CCA-500 exam prep
NO.3
During the execution of a MapReduce v2 (MRv2) job on YARN, where does the Mapper
place
the intermediate data of each Map Task?
A. YARN holds the
intermediate data in the NodeManager's memory (a container) until it
is
transferred to the Reducer
B. 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
C. The Mapper
transfers the intermediate data immediately to the reducers as it is generated
by the
Map Task
D. The Mapper stores the intermediate data on the
underlying filesystem of the local disk in the
directories
yarn.nodemanager.locak-DIFS
E. 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
Answer: D
CCA-500 Test Questions CCA-500
pdf
NO.4 You are working on a project where you need to chain together
MapReduce, Pig jobs. You also
need the ability to use forks, decision points,
and path joins. Which ecosystem project should you use
to perform these
actions?
A. HUE
B. ZooKeeper
C. Oozie
D. HBase
E.
Sqoop
Answer: C
CCA-500
Braindumps CCA-500 Real Questions
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