HDFS, by default, replicates each data block _____ times on different nodes and on at least ____ racks.(a) 3, 2(b) 1, 2(c) 2, 3(d) All of the mentionedI have been asked this question in unit test.My doubt is from Data Integrity in division Hadoop I/O of Hadoop

HDFS, by default, replicates each data block _____ times on different

1.	HDFS, by default, replicates each data block _____ times on different nodes and on at least ____ racks.(a) 3, 2(b) 1, 2(c) 2, 3(d) All of the mentionedI have been asked this question in unit test.My doubt is from Data Integrity in division Hadoop I/O of Hadoop
Answer» The correct CHOICE is (a) 3, 2 The best I can explain: HDFS has a simple yet robust architecture that was explicitly designed for DATA reliability in the face of faults and FAILURES in disks, nodes and NETWORKS.

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HDFS, by default, replicates each data block _ times on different nodes and on at least racks.(a) 3, 2(b) 1, 2(c) 2, 3(d) All of the mentionedI have been asked this question in unit test.My doubt is from Data Integrity in division Hadoop I/O of Hadoop

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