Which three basic configuration parameters must you set to migrate your cluster from MapReduce
1 (MRv1) to MapReduce V2 (MRv2)?
A.
Configure the NodeManager to enable MapReduce services on YARN by setting the following
property in yarn-site.xml:
<name>yarn.nodemanager.hostname</name>
<value>your_nodeManager_shuffle</value>
B.
Configure the NodeManager hostname and enable node services on YARN by setting the
following property in yarn-site.xml:
<name>yarn.nodemanager.hostname</name>
<value>your_nodeManager_hostname</value>
C.
Configure a default scheduler to run on YARN by setting the following property in mapredsite.xml:
<name>mapreduce.jobtracker.taskScheduler</name>
<Value>org.apache.hadoop.mapred.JobQueueTaskScheduler</value>
D.
Configure the number of map tasks per jon YARN by setting the following property in mapred:
<name>mapreduce.job.maps</name>
<value>2</value>
E.
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_resourceManager_hostname</value>
F.
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>
correct answer is A, E and F ……
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A,E nd F
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should be B,E and F ?
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I dont think A is needed. I have cluster running without setting nodemanager in yarn-site.xml, Also I dont think question itself is correct.
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2) On each slave node, edit the following properties in yarn-site.xml. Do not edit master’s yarn-site.xml.
yarn.nodemanager.hostname = $LOCAL_IP
yarn.resourcemanager.hostname = $MASTER_IP
https://forge.gluster.org/hadoop/pages/Cloudera
and to make it possible to run MR1 on Yarn:
mapreduce.framework.name
yarn
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I guess A, E & F
http://www.cloudera.com/content/www/en-us/documentation/enterprise/latest/topics/cdh_ig_mapreduce_to_yarn_migrate.html#concept_wy1_kmy_xl_unique_2
https://www.ibm.com/developerworks/library/ba-mrv1-yarn/
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For the test, the option A given above is as follows
———————————-
Configure the NodeManager to enable MapReduce services on YARN by setting the following
property in yarn-site.xml:
yarn.nodemanager.aux-services
mapreduce_shuffle
———————————
(I tried the test on 22-Nov-2015 and scored 87%. Same questions and options were asked but in different order. I chose the answers based on the discussion in this site)
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AEF
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A,E,F
http://www.cloudera.com/content/www/en-us/documentation/enterprise/latest/topics/cdh_ig_mapreduce_to_yarn_migrate.html#concept_wy1_kmy_xl_unique_2
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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Why not B . I think answer is BEF.
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AEF
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http://www.cloudera.com/documentation/cdh/5-1-x/CDH5-Installation-Guide/cdh5ig_mapreduce_to_yarn_migrate.html
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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A,E,F
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AEF
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I have the same idea. ABD
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