. . . . . . . . operator is used to review the schema of a relation.
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Hadoop · all questionsData Processing with Pig
Data Processing with Pig
practice.
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Point out the correct statement.
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Which of the following operator is used to view the map reduce execution plans?
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. . . . . . . . operator is used to view the step-by-step execution of a series of statements.
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Point out the wrong statement.
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. . . . . . . . is a framework for collecting and storing script-level statistics for Pig Latin.
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The . . . . . . . . class mimics the behavior of the Main class but gives users a statistics object back.
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. . . . . . . . is a simple xUnit framework that enables you to easily test your Pig scripts.
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Which of the following will compile the Pigunit?
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PigUnit runs in Pig's . . . . . . . . mode by default.
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. . . . . . . . abstract class has three main methods for loading data and for most use cases it would suffice to extend it.
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Which of the following has methods to deal with metadata?
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. . . . . . . . method will be called by Pig both in the front end and back end to pass a unique signature to the Loader.
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Point out the wrong statement.
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. . . . . . . . return a list of hdfs files to ship to distributed cache.
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The loader should use . . . . . . . . method to communicate the load information to the underlying InputFormat.
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. . . . . . . . method enables the RecordReader associated with the InputFormat provided by the LoadFunc is passed to the LoadFunc.
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. . . . . . . . method tells LoadFunc which fields are required in the Pig script.
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A loader implementation should implement . . . . . . . . if casts (implicit or explicit) from DataByteArray fields to other types need to be supported.
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