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VCE
Table schemas in Hive are:
A. Stored as metadata on the NameNode
B. Stored along with the data in HDFS
C. Stored in the Metadata
D. Stored in ZooKeeper
Each node in your Hadoop cluster, running YARN, has 64GB memory and 24 cores. Your yarn.site.xml
has the following configuration:
You want YARN to launch no more than 16 containers per node. What should you do?
A. Modify yarn-site.xml with the following property:
B. Modify yarn-sites.xml with the following property:
C. Modify yarn-site.xml with the following property:
D. No action is needed: YARN's dynamic resource allocation automatically optimizes the node memory and cores
You have just run a MapReduce job to filter user messages to only those of a selected geographical region. The output for this job is in a directory named westUsers, located just below your home directory in HDFS. Which command gathers these into a single file on your local file system?
A. Hadoop fs getmerge R westUsers.txt
B. Hadoop fs getemerge westUsers westUsers.txt
C. Hadoop fs cp westUsers/* westUsers.txt
D. Hadoop fs get westUsers westUsers.txt