YARN interview questions

12 real YARN questions from the Big Data bank, as asked in Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd — free to start.

1. What is ResourceManager?

Junior
  1. A.the YARN component that globally schedules cluster resources
  2. B.the YARN per-node agent managing containers
  3. C.Spark keeps data in memory across stages instead of writing to disk each step
  4. D.the per-application YARN process negotiating resources and coordinating tasks
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3. Which statement is correct?

Junior
  1. A.ResourceManager — the YARN component that globally schedules cluster resources
  2. B.ResourceManager — Spark keeps data in memory across stages instead of writing to disk each step
  3. C.ResourceManager — the per-application YARN process negotiating resources and coordinating tasks
  4. D.ResourceManager — the YARN per-node agent managing containers
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4. What is NodeManager?

Junior
  1. A.the per-application YARN process negotiating resources and coordinating tasks
  2. B.Spark keeps data in memory across stages instead of writing to disk each step
  3. C.the YARN component that globally schedules cluster resources
  4. D.the YARN per-node agent managing containers
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6. Which statement is correct?

Junior
  1. A.NodeManager — Spark keeps data in memory across stages instead of writing to disk each step
  2. B.NodeManager — the per-application YARN process negotiating resources and coordinating tasks
  3. C.NodeManager — the YARN component that globally schedules cluster resources
  4. D.NodeManager — the YARN per-node agent managing containers
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7. What is ApplicationMaster?

Junior
  1. A.the per-application YARN process negotiating resources and coordinating tasks
  2. B.the YARN component that globally schedules cluster resources
  3. C.the YARN per-node agent managing containers
  4. D.Spark keeps data in memory across stages instead of writing to disk each step
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9. Which statement is correct?

Junior
  1. A.ApplicationMaster — the YARN per-node agent managing containers
  2. B.ApplicationMaster — the per-application YARN process negotiating resources and coordinating tasks
  3. C.ApplicationMaster — Spark keeps data in memory across stages instead of writing to disk each step
  4. D.ApplicationMaster — the YARN component that globally schedules cluster resources
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10. What is why Spark beats MapReduce?

Mid
  1. A.the YARN per-node agent managing containers
  2. B.the per-application YARN process negotiating resources and coordinating tasks
  3. C.the YARN component that globally schedules cluster resources
  4. D.Spark keeps data in memory across stages instead of writing to disk each step
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12. Which statement is correct?

Mid
  1. A.why Spark beats MapReduce — the YARN per-node agent managing containers
  2. B.why Spark beats MapReduce — the YARN component that globally schedules cluster resources
  3. C.why Spark beats MapReduce — Spark keeps data in memory across stages instead of writing to disk each step
  4. D.why Spark beats MapReduce — the per-application YARN process negotiating resources and coordinating tasks
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