Question

Point out the correct statement.

a.

The number of sorted map outputs fetched into memory before being merged to disk

b.

The memory threshold for fetched map outputs before an in-memory merge is finished

c.

The percentage of memory relative to the maximum heap size in which map outputs may not be retained during the reduce

d.

None of the mentioned

Posted under Hadoop

Answer: (a).The number of sorted map outputs fetched into memory before being merged to disk

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