Hadoop Interview Questions and Answers

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Point out the wrong statement. a) Replication Factor can be configured at a cluster level (Default is set to 3) and also at a file level

asked Oct 23, 2022 in Hadoop by DavidAnderson

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________ NameNode is used when the Primary NameNode goes down.

asked Oct 23, 2022 in Hadoop by DavidAnderson

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HDFS works in a __________ fashion.

asked Oct 23, 2022 in Hadoop by DavidAnderson

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Point out the correct statement. a) DataNode is the slave/worker node and holds the user data in the form of Data Blocks

asked Oct 23, 2022 in Hadoop by DavidAnderson

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A ________ serves as the master and there is only one NameNode per cluster.

asked Oct 23, 2022 in Hadoop by DavidAnderson

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

asked Oct 23, 2022 in Hadoop by DavidAnderson

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

asked Oct 23, 2022 in Hadoop by DavidAnderson

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

asked Oct 23, 2022 in Hadoop by DavidAnderson

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

asked Oct 23, 2022 in Hadoop by DavidAnderson

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The ________ option allows you to copy jars locally to the current working directory of tasks and automatically unjar the files. a) archives b) files c) task d) none of the mentioned

asked Oct 23, 2022 in Hadoop by DavidAnderson

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Point out the wrong statement. a) Hadoop has a library package called Aggregate

asked Oct 23, 2022 in Hadoop by DavidAnderson

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To set an environment variable in a streaming command use ____________

asked Oct 23, 2022 in Hadoop by DavidAnderson

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Which of the following Hadoop streaming command option parameter is required? a) output directoryname b) mapper executable c) input directoryname d) all of the mentioned

asked Oct 23, 2022 in Hadoop by DavidAnderson

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Point out the correct statement. a) You can specify any executable as the mapper and/or the reducer

asked Oct 23, 2022 in Hadoop by DavidAnderson

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

asked Oct 23, 2022 in Hadoop by DavidAnderson

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__________ represent the logical computations of your Crunch pipelines.

asked Oct 22, 2022 in Hadoop by DavidAnderson

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___________ executes the pipeline as a series of MapReduce jobs.

asked Oct 22, 2022 in Hadoop by DavidAnderson

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Hive, Pig, and Cascading all use a _________ data model.

asked Oct 22, 2022 in Hadoop by DavidAnderson

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Crunch was designed for developers who understand __________ and want to use MapReduce effectively.

asked Oct 22, 2022 in Hadoop by DavidAnderson

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Point out the wrong statement. a) Crunch pipeline written by the development team sessionizes a set of user logs generates are then processed by a diverse collection of Pig scripts and Hive queries

asked Oct 22, 2022 in Hadoop by DavidAnderson

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The Crunch APIs are modeled after _________ which is the library that Google uses for building data pipelines on top of their own implementation of MapReduce.

asked Oct 22, 2022 in Hadoop by DavidAnderson

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Point out the correct statement. a) Scrunch’s Java API is centered around three interfaces that represent distributed datasets

asked Oct 22, 2022 in Hadoop by DavidAnderson

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The Apache Crunch Java library provides a framework for writing, testing, and running ___________ pipelines.

asked Oct 22, 2022 in Hadoop by DavidAnderson

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In which year Apache Mahout started?

asked Oct 7, 2022 in Hadoop by Robin

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What are the main configuration files in Hadoop?

asked May 22, 2022 in Hadoop by AdilsonLima

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Which of the following options are the characteristics of Sqoop

asked Mar 2, 2022 in Hadoop by DavidAnderson

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Which of the following is the component of YARN?

asked Jul 28, 2021 in Hadoop by SakshiSharma

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How many major component Yarn has?

asked Jul 28, 2021 in Hadoop by SakshiSharma

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YARN is the one who helps to manage the resources across the ________.

asked Jul 28, 2021 in Hadoop by SakshiSharma

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What is the full form of YARN?

asked Jul 28, 2021 in Hadoop by SakshiSharma

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