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CCA-410 · Question #11
CCA-410 Question #11: Real Exam Question with Answer & Explanation
The correct answer is B. The client queries the NameNode for the locations of the block, and reads from the first location in the. See the full explanation below for the reasoning.
Question
Your cluster is running Map v1 (MRv1), with default replication set to 3, and a cluster blocks 64MB. Identify which best describes the file read process when a Client application connects into the cluster and requests a 50MB file?
Options
- AThe client queries the NameNode for the locations of the block, and reads all three copies. The first
- BThe client queries the NameNode for the locations of the block, and reads from the first location in the
- CThe client queries the NameNode for the locations of the block, and reads from a random location in the
- DThe client queries the NameNode and then retrieves the block from the nearest DataNode to the client
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