CCA-410 · Question #21
Identify which two daemons typically run each slave node in a Hadoop cluster running MapReduce v1 (MRv1)
The correct answer is B. TaskTracker C. DataNode. A TaskTracker is a slave node daemon in the cluster that accepts tasks (Map, Reduce and Shuffle operations) from a JobTracker. The following two daemons run on each Slave nodes: DataNode ?Stores actual HDFS data blocks. TaskTracker - Responsible for instantiating and monitoring…
Question
Identify which two daemons typically run each slave node in a Hadoop cluster running MapReduce v1 (MRv1)
Options
- ANodeManager
- BTaskTracker
- CDataNode
- DNameNode
- ESecondary NameNode
- FJobTracker
How the community answered
(53 responses)- A2% (1)
- B81% (43)
- D4% (2)
- E11% (6)
- F2% (1)
Explanation
A TaskTracker is a slave node daemon in the cluster that accepts tasks (Map, Reduce and Shuffle operations) from a JobTracker. The following two daemons run on each Slave nodes: * DataNode ?Stores actual HDFS data blocks. * TaskTracker - Responsible for instantiating and monitoring individual Map and Reduce tasks. Daemon processes run on a Hadoop system?
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