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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 mentionedI got this question in a national level competition.This intriguing question originated from Data Integrity topic in portion Hadoop I/O of Hadoop

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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