Each node in your Hadoop cluster, running YARN, has 64 GB memory and 24 cores. Your
yarn-site.xml has the following configuration: <property>
<name>yarn.nodemanager.resource.memory-mb</name> <value>32768</value>
</property> <property> <name>yarn.nodemanager.resource.cpu-vcores</name>
<value>23</value> </property> You want YARN to launch no more than 16 containers per
node. What should you do?
A.
No action is needed: YARN’s dynamic resource allocation automatically optimizes the
node memory and cores
B.
Modify yarn-site.xml with the following property:
<name>yarn.nodemanager.resource.cpu-vcores</name> <value>16</value>
C.
Modify yarn-site.xml with the following property:
<name>yarn.scheduler.minimum-allocation-mb</name> <value>2048</value>
D.
Modify yarn-site.xml with the following property:
<name>yarn.scheduler.minimum-allocation-mb</name> <value>4096</value>
C
#Containers=yarn.nodemanager.resource.memory-mb/size of container(default 1024) = 32768/1024=32
for 16 containers set min container size i.e. yarn.scheduler.minimum-allocation-mb to 32768/16 = 2048
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C is correct
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