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in Hadoop by (122k points)
Point out the correct statement.

(a) The HDFS architecture is compatible with data rebalancing schemes

(b) Datablocks support storing a copy of data at a particular instant of time

(c) HDFS currently support snapshots

(d) None of the mentioned

The question was posed to me during an online exam.

Question is taken from Data Integrity topic in division Hadoop I/O of Hadoop

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Right choice is (a) The HDFS architecture is compatible with data rebalancing schemes

The explanation: A scheme might automatically move data from one DataNode to another if the free space on a DataNode falls below a certain threshold.

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