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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=-Xmx3072m
B. yarn.application.child.java.opts=-Xsx3072m
C. mapreduce.map.java.opts=-Xms3072m
D. yarn.application.child.java.opts=-Xmx3072m
Answer: C
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Reference: http://hortonworks.com/blog/how-to-plan-and-configure-yarn-in-hdp-2-0/
NO.2 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 with Hadoop streaming
B. Ingest using the HDFS put command
C. Ingest using Hive's IQAD DATA command
D. Ingest with Pig's LOAD command
E. Ingest with sqoop import
Answer: E
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Exam Code: CCA-500Exam Name: Cloudera Certified Administrator for Apache Hadoop (CCAH)
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CCA-500 Free Demo Total Q&A: 60 Questions and Answers
Last Update: 2016-10-09
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