Q. Mapper and Reducer implementations can use the ________ to report progress or just indicate that they are alive.

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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. ________ systems are scale-out file-based (HDD) systems moving to more uses of memory in the nodes.

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Q. Hadoop data is not sequenced and is in 64MB to 256MB block sizes of delimited record values with schema applied on read based on ____________

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Q. __________ are highly resilient and eliminate the single-point-of-failure risk with traditional Hadoop deployments.

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Q. HDFS and NoSQL file systems focus almost exclusively on adding nodes to ____________

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Q. Which is the most popular NoSQL database for scalable big data store with Hadoop?

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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. HBase provides ___________ like capabilities on top of Hadoop and HDFS.

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Q. __________ refers to incremental costs with no major impact on solution design, performance and complexity.

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Q. Streaming supports streaming command options as well as _________ command options.

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Q. Which of the following Hadoop streaming command option parameter is required?

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Q. To set an environment variable in a streaming command use ____________

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Q. The ________ option allows you to copy jars locally to the current working directory of tasks and automatically unjar the files.

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Q. ______________ class allows the Map/Reduce framework to partition the map outputs based on certain key fields, not the whole keys.

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Q. Which of the following class provides a subset of features provided by the Unix/GNU Sort?

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Q. Which of the following class is provided by the Aggregate package?

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Q. Hadoop has a library class, org.apache.hadoop.mapred.lib.FieldSelectionMapReduce, that effectively allows you to process text data like the unix ______ utility.

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Q. ___________ generates keys of type LongWritable and values of type Text.

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