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__________ support storing a copy of data at a particular instant of time.

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+1 vote
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in Hadoop by (122k points)
__________ support storing a copy of data at a particular instant of time.

(a) Data Image

(b) Datanots

(c) Snapshots

(d) All of the mentioned

I had been asked this question during an interview for a job.

Query is from Data Integrity topic in section Hadoop I/O of Hadoop

1 Answer

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Best answer
The correct choice is (c) Snapshots

To elaborate: One usage of the snapshot feature may be to roll back a corrupted HDFS instance to a previously known good point in time.

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