Hadoop Interview Questions

What are the most common input formats defined in Hadoop?

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These are the most common input formats defined in Hadoop: TextInputFormat KeyValueInputFormat SequenceFileInputFormat TextInputFormat is a by default input format. In Hadoop, InputFormats define the way in which Hadoop processes input data. Some of the most common InputFormats defined in Hadoop are: TextInputFormat: This is the default input format. It treats each line of the … Read more

What kind of Hardware is best for Hadoop?

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Hadoop can run on a dual processor/ dual core machines with 4-8 GB RAM using ECC memory. It depends on the workflow needs. The hardware requirements for Hadoop can depend on various factors such as the size of your data, the complexity of your processing tasks, and your specific use case. However, in a general … Read more

What platform and Java version are required to run Hadoop?

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Java 1.6.x or higher versions are good for Hadoop, preferably from Sun. Linux and Windows are the supported operating system for Hadoop, but BSD, Mac OS/X, and Solaris are more famous for working. As of my last knowledge update in January 2022, the platform and Java version requirements for running Hadoop may have evolved. However, … Read more

What is Hadoop?

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Hadoop is a distributed computing platform. It is written in Java. It consists of the features like Google File System and MapReduce. Hadoop is an open-source framework designed for the distributed storage and processing of large sets of data using a cluster of commodity hardware. It provides a scalable and fault-tolerant solution for handling big … Read more