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What is the maximum amount of virtual memory allocated for each map before YARN will kill its Container?

Your cluster’s mapped-site.xml includes the following parameters
<name>mapreduce.map.memory.mb</name>
<value>4096<value/>
<name>mapreduce.reduce.memory,mb</name>
<value>8192</value>
And your cluster’s yarn-site.xml includes the following parameters
<name>yarn.nodemanager/vmen-pmem-ratio</name>
<value>2.1</value>
What is the maximum amount of virtual memory allocated for each map before YARN will kill its
Container?

Which is the most efficient process to gather these web server logs into your Hadoop cluster for analysis?

You want to understand more about how users browse you public website. For example, you want
to know which pages they visit prior to placing an order. You have a server farm of 200 web
servers hosting your website. Which is the most efficient process to gather these web server logs
into your Hadoop cluster for analysis?


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