Q. Which of the following is the default Partitioner for Mapreduce?

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Q. Which of the following partitions the key space?

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Q. ____________ is a generalization of the facility provided by the MapReduce framework to collect data output by the Mapper or the Reducer.

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Q. __________ is the primary interface for a user to describe a MapReduce job to the Hadoop framework for execution.

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Q. The ___________ executes the Mapper/ Reducer task as a child process in a separate jvm.

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Q. Maximum virtual memory of the launched child-task is specified using _________

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Q. Which of the following parameter is the threshold for the accounting and serialization buffers?

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Q. ______________ is percentage of memory relative to the maximum heap size in which map outputs may be retained during the reduce.

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Q. ____________ specifies the number of segments on disk to be merged at the same time.

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Q. Map output larger than ___________ percent of the memory allocated to copying map outputs.

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Q. Jobs can enable task JVMs to be reused by specifying the job configuration _________

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Q. During the execution of a streaming job, the names of the _______ parameters are transformed.

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Q. The standard output (stdout) and error (stderr) streams of the task are read by the TaskTracker and logged to _________

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Q. ____________ is the primary interface by which user-job interacts with the JobTracker.

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Q. The _____________ can also be used to distribute both jars and native libraries for use in the map and/or reduce tasks.

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Q. __________ is used to filter log files from the output directory listing.

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Q. Which of the following class provides access to configuration parameters?

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Q. ___________ gives site-specific configuration for a given hadoop installation.

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Q. Administrators typically define parameters as final in __________ for values that user applications may not alter.

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Q. _________ method clears all keys from the configuration.

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