Q. ________ is the slave/worker node and holds the user data in the form of Data Blocks.

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Q. HDFS provides a command line interface called __________ used to interact with HDFS.

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Q. HDFS is implemented in _____________ programming language.

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Q. For YARN, the ___________ Manager UI provides host and port information.

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Q. For ________ the HBase Master UI provides information about the HBase Master uptime.

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Q. During start up, the ___________ loads the file system state from the fsimage and the edits log file.

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Q. In order to read any file in HDFS, instance of __________ is required.

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Q. ______________ is method to copy byte from input stream to any other stream in Hadoop.

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Q. _____________ is used to read data from bytes buffers.

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Q. Interface ____________ reduces a set of intermediate values which share a key to a smaller set of values.

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Q. Reducer is input the grouped output of a ____________

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Q. The output of the reduce task is typically written to the FileSystem via ____________

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Q. Applications can use the _________ provided to report progress or just indicate that they are alive.

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Q. Which of the following parameter is to collect keys and combined values?

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Q. ________ is a programming model designed for processing large volumes of data in parallel by dividing the work into a set of independent tasks.

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Q. The daemons associated with the MapReduce phase are ________ and task-trackers.

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Q. The JobTracker pushes work out to available _______ nodes in the cluster, striving to keep the work as close to the data as possible.

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Q. InputFormat class calls the ________ function and computes splits for each file and then sends them to the jobtracker.

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Q. On a tasktracker, the map task passes the split to the createRecordReader() method on InputFormat to obtain a _________ for that split.

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Q. The default InputFormat is __________ which treats each value of input a new value and the associated key is byte offset.

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