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Hadoop · all questions

Hadoop Input Output Operations
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Which of the following works well with Avro?

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. . . . . . . . permits data written by one system to be efficiently sorted by another system.

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Avro supports . . . . . . . . kinds of complex types.

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The . . . . . . . . is an iterator which reads through the file and returns objects using the next() method.

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Point out the wrong statement.

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Avro messages are framed as a list of . . . . . . . .

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. . . . . . . . are encoded as a series of blocks.

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. . . . . . . . support storing a copy of data at a particular instant of time.

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. . . . . . . . class accepts the values that the ModelCountMapper object has collected.

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The . . . . . . . . class extends and implements several Hadoop-supplied interfaces.

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We can declare the schema of our data either in a . . . . . . . . file.

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. . . . . . . . are a way of encoding structured data in an efficient yet extensible format.

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Point out the correct statement.

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. . . . . . . . data file takes is based on avro serialization framework which was primarily created for hadoop.

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Point out the correct statement.

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The . . . . . . . . codec from Google provides modest compression ratios.

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The . . . . . . . . method in the ModelCountReducer class "reduces" the values the mapper collects into a derived value.

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How many formats of SequenceFile are present in Hadoop I/O?

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Hadoop I/O Hadoop comes with a set of . . . . . . . . for data I/O.

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. . . . . . . . facilitates construction of generic data-processing systems and languages.

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