A developer is writing a custom YARN application. They need to understand what resources are encapsulated in a container. Which of the following is a resource that a YARN container encapsulates?

Only memory, as CPU is managed by the operating system

Network bandwidth and disk I/O, but not CPU or memory

Only disk space, as CPU and memory are allocated by the ApplicationMaster

What is the role of the NodeManager in YARN?

To negotiate resources for a specific application

To schedule tasks across the entire cluster

To store application logs in HDFS

To manage containers and monitor resources on a single node

A YARN cluster has been running reliably for months, but the administrator is planning for disaster recovery. The administrator is concerned about the ResourceManager (RM) failing. What is the most effective way to ensure that the cluster can continue to accept and run new applications if the RM fails?

Enable ResourceManager high availability (HA) with an active-standby pair and a shared state store, such as ZooKeeper or a shared filesystem.

Configure the NodeManagers to automatically restart the ResourceManager if it fails.

Rely on the ApplicationMasters to take over ResourceManager responsibilities if it fails.

Set up a cron job to restart the ResourceManager service every hour to prevent failures.

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Domain 1Objective 3

Yet Another Resource Negotiator (YARN) DATA-SCIENCE-OPTIMIZE Practice Questions (Page 1)

Part of the MapReduce domain, which accounts for 15% of the DATA-SCIENCE-OPTIMIZE exam.

31questions here

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9concepts

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Questions 1–5

1application · easy
A developer is writing a custom YARN application. They need to understand what resources are encapsulated in a container. Which of the following is a resource that a YARN container encapsulates?
Select an answer first
2foundation · easy
Which YARN component acts as the per-application master that coordinates the execution of tasks for a single application?
Select an answer first
3foundation · easy
What is the role of the NodeManager in YARN?
Select an answer first
4expert · hard
A YARN cluster has been running reliably for months, but the administrator is planning for disaster recovery. The administrator is concerned about the ResourceManager (RM) failing. What is the most effective way to ensure that the cluster can continue to accept and run new applications if the RM fails?
Select an answer first
5foundation · easy
Which YARN scheduler is best suited for a shared cluster where multiple users need to get a fair share of resources over time?
Select an answer first

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Yet Another Resource Negotiator (YARN) DATA-SCIENCE-OPTIMIZE Practice Questions (Page 1)

Questions 1–5

A developer is writing a custom YARN application. They need to understand what resources are encapsulated in a container. Which of the following is a resource that a YARN container encapsulates?

Which YARN component acts as the per-application master that coordinates the execution of tasks for a single application?

What is the role of the NodeManager in YARN?

Which YARN scheduler is best suited for a shared cluster where multiple users need to get a fair share of resources over time?

Keep studying — MapReduce