Which three basic configuration parameters must you set to migrate your cluster from
MapReduce1 (MRv1) to MapReduce v2 (MRv2)?
A.
Configure the NodeManager hostname and enable services on YARN by setting the following
property in yarn-site.xml:
<name>yarn.nodemanager.hostname</name>
<value>your_nodeManager_hostname</value>
B.
Configure the number of map tasks per job on YARN by setting the following property in
mapred-site.xml:
<name>mapreduce.job.maps</name>
<value>2</value>
C.
Configure MapReduce as a framework running on YARN by setting the following property in
mapred-site.xml:
<name>mapreduce.framework.name</name>
<value>yarn</value>
D.
Configure the ResourceManager hostname and enable node services on YARN by setting the
following property in yarn-site.xml:
<name>yarn.resourcemanager.hostname</name>
<value>your_responseManager_hostname</value>
E.
Configure a default scheduler to run on YARN by setting the following property in sapred
site.xml:
<name>mapreduce.jobtracker.taskScheduler</name>
<value>org.apache.hadoop.mapred.JobQueueTaskScheduler</value>
F.
Configure the NodeManager to enable MapReduce services on YARN by adding following
property in yarn-site.xml:
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
See http://www.cloudera.com/content/cloudera/en/documentation/core/latest/topics/cdh_ig_mapreduce_to_yarn_migrate.html#concept_e4c_3my_xl_unique_1
Answers are: C, D, F
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A minimal configuration required to run MRv2 jobs on YARN is:
yarn-site.xml configuration
yarn.resourcemanager.hostname
you.hostname.com
yarn.nodemanager.aux-services
mapreduce_shuffle
mapred-site.xml configuration
mapreduce.framework.name
yarn
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I have the same idea. ABD
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