Cloudera
CCA-500 · Question #30
Your cluster has the following characteristics: - A rack aware topology is configured and on - Replication is set to 3 - Cluster block size is set to 64MB Which describes the file read process when…
The correct answer is B. The client queries the NameNode for the locations of the block, and reads from the first location in. See the full explanation below for the reasoning.
Question
Your cluster has the following characteristics:
- A rack aware topology is configured and on
- Replication is set to 3
- Cluster block size is set to 64MB
Which 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.
- BThe client queries the NameNode for the locations of the block, and reads from the first location in
- CThe client queries the NameNode for the locations of the block, and reads from a random location
- DThe client queries the NameNode which retrieves the block from the nearest DataNode to the
How the community answered
(31 responses)- A3% (1)
- B81% (25)
- C13% (4)
- D3% (1)
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