1.

_________ is adata migration tool added for archiving data.(a) Mover(b) Hiver(c) Serde(d) None of the mentionedThis question was addressed to me during an online interview.Query is from MapReduce Job in division Working of MapReduce of Hadoop

Answer»

Right option is (a) MOVER

The best explanation: Mover periodically scans the FILES in HDFS to check if the block PLACEMENT satisfies the STORAGE policy.



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