CCA-410 · Question #79
Which three distcp features can you utilize on a Hadoop cluster?
The correct answer is B. Use distcp to copy HBase table files. D. Use distcp to copy data between directories inside the same cluster. E. Use distcp to run an internal MapReduce job to copy files. DistCp (distributed copy) is a tool used for large inter/intra-cluster copying. It uses Map/Reduce to effect its distribution, error handling and recovery, and reporting. It expands a list of files and directories into input to map tasks, each of which will copy a partition of…
Question
Which three distcp features can you utilize on a Hadoop cluster?
Options
- AUse distcp to copy files only between two clusters or more. You cannot use distcp to copy data between
- BUse distcp to copy HBase table files.
- CUse distcp to copy physical blocks from the source to the target destination in your cluster.
- DUse distcp to copy data between directories inside the same cluster.
- EUse distcp to run an internal MapReduce job to copy files.
How the community answered
(24 responses)- A17% (4)
- B71% (17)
- C13% (3)
Explanation
DistCp (distributed copy) is a tool used for large inter/intra-cluster copying. It uses Map/Reduce to effect its distribution, error handling and recovery, and reporting. It expands a list of files and directories into input to map tasks, each of which will copy a partition of the files specified in the source list. Its Map/Reduce pedigree has endowed it with some quirks in both its semantics and
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