1.

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 mentionedThe question was posed to me during an online exam.Question is taken from Data Integrity topic in division Hadoop I/O of Hadoop

Answer»

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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