Indentify which best defines a SequenceFile?

The correct answer is D. A SequenceFile contains a binary encoding of an arbitrary number key-value pairs. Each key must be the. SequenceFile is a flat file consisting of binary key/value pairs. There are 3 different SequenceFile formats: Uncompressed key/value records. Record compressed key/value records - only 'values' are compressed here. Block compressed key/value records - both keys and values are…

Hadoop Ecosystem Fundamentals

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Options

AA SequenceFile contains a binary encoding of an arbitrary number of homogeneous Writable objects
BA SequenceFile contains a binary encoding of an arbitrary number of heterogeneous Writable objects
CA SequenceFile contains a binary encoding of an arbitrary number of WritableComparable objects, in sorted
DA SequenceFile contains a binary encoding of an arbitrary number key-value pairs. Each key must be the

How the community answered

(42 responses)

A
2% (1)
B
7% (3)
C
10% (4)
D
81% (34)

Explanation

SequenceFile is a flat file consisting of binary key/value pairs. There are 3 different SequenceFile formats: Uncompressed key/value records. Record compressed key/value records - only 'values' are compressed here. Block compressed key/value records - both keys and values are collected in 'blocks' separately and compressed. The size of the 'block' is configurable.

Topics

#SequenceFile#binary format#key-value pairs#HDFS file formats

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