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Point out the correct statement.

(a) When there is enough space, block replicas are stored according to the storage type list

(b) One_SSD is used for storing all replicas in SSD

(c) Hot policy is useful only for single replica blocks

(d) All of the mentioned

The question was asked in homework.

My question is based upon MapReduce Job topic in chapter Working of MapReduce of Hadoop

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Correct option is (a) When there is enough space, block replicas are stored according to the storage type list

The best explanation: The first phase of Heterogeneous Storage changed datanode storage model from a single storage.

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