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 YARN process run as “container 0” of a submitted job and is responsible for resource qrequests?
Which YARN process run as “container 0” of a submitted job and is responsible for resource
qrequests?
Which Linux commands help you to identify whether swapping is occurring?
You suspect that your NameNode is incorrectly configured, and is swapping memory to disk.
Which Linux commands help you to identify whether swapping is occurring?
What is the result when you execute: hadoop jar samplejar.jar MyClass on a client machine?
Your cluster is configured with HDFS and MapReduce version 2 (MRv2) on YARN. What is the
result when you execute: hadoop jar samplejar.jar MyClass on a client machine?
Which scheduler would you deploy to ensure that your cluster allows short jobs to finish within a reasonable t
Which scheduler would you deploy to ensure that your cluster allows short jobs to finish within a
reasonable time without starting long-running jobs?
Which three basic configuration parameters must you set to migrate your cluster from MapReduce1 (MRv1) to MapR
Which three basic configuration parameters must you set to migrate your cluster from
MapReduce1 (MRv1) to MapReduce v2 (MRv2)?
What is the result when you execute: hadoop jar SampleJar MyClass on a client machine?
Your cluster is configured with HDFS and MapReduce version 2 (MRv2) on YARN. What is the
result when you execute: hadoop jar SampleJar MyClass on a client machine?
how do you increase JVM heap property to 3GB to optimize performance?
You are running a Hadoop cluster with MapReduce version 2 (MRv2) on YARN. You consistently
see that MapReduce map tasks on your cluster are running slowly because of excessive garbage
collection of JVM, how do you increase JVM heap property to 3GB to optimize performance?
Which ecosystem project should you use to perform these actions?
You are working on a project where you need to chain together MapReduce, Pig jobs. You also
need the ability to use forks, decision points, and path joins. Which ecosystem project should you
use to perform these actions?
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?