CCD-410 · Question #4
Identify the MapReduce v2 (MRv2 / YARN) daemon responsible for launching application containers and monitoring application resource usage?
The correct answer is B. NodeManager. Nodemanager is launching the containers themselves. The container can be an ApplicationMaster or a child. AM is only asking other nodes' Nodemanager to launch the taskattempts, but it e.g. cannot directly monitor their resource usage…
Question
Identify the MapReduce v2 (MRv2 / YARN) daemon responsible for launching application containers and monitoring application resource usage?
Options
- AResourceManager
- BNodeManager
- CApplicationMaster
- DApplicationMasterService
- ETaskTracker
- FJobTracker
How the community answered
(20 responses)- B80% (16)
- C5% (1)
- E10% (2)
- F5% (1)
Explanation
Nodemanager is launching the containers themselves. The container can be an ApplicationMaster or a child. AM is only asking other nodes' Nodemanager to launch the taskattempts, but it e.g. cannot directly monitor their resource usage. phpapp02/95/hadoop-tutorial-mapreduce-part-6-job-execution-on-yarn-8-638.jpg
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