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The HDFS client software implements __________ checking on the contents of HDFS files.

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The HDFS client software implements __________ checking on the contents of HDFS files.

(a) metastore

(b) parity

(c) checksum

(d) none of the mentioned

I got this question in a national level competition.

This intriguing question originated from Data Integrity topic in portion Hadoop I/O of Hadoop

1 Answer

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Best answer
Correct option is (c) checksum

Explanation: When a client creates an HDFS file, it computes a checksum of each block of the file and stores these checksums in a separate hidden file in the same HDFS namespace.

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