Yet Another Resource Negotiator (YARN) DATA-SCIENCE-OPTIMIZE Practice Questions (Page 7)

Questions 31–31

1. 31expert · hard

   A company is running a large Hadoop cluster with classic MapReduce (MRv1). They are experiencing poor resource utilization because the JobTracker is a bottleneck and slots are statically allocated. They are considering migrating to YARN. What is the primary benefit of YARN that addresses the static slot allocation problem?

   • AYARN uses dynamic containers that can be sized to the needs of each task, rather than fixed map and reduce slots.
   • BYARN uses a single queue for all jobs, simplifying scheduling and improving utilization.
   • CYARN allows multiple jobs to run in the same container, reducing overhead.
   • DYARN eliminates the need for a central scheduler, allowing each node to schedule its own tasks.
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