Understanding Scala Collections

Post author:nitendratech
Post category:Scala
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Post published:November 27, 2019

Scala is a general-purpose programming language providing support for functional programming and a strong static type system

Apache Sqoop Tutorial

Post author:nitendratech
Post category:Big Data
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Post published:November 4, 2019

Sqoop is a command-line interface application for transferring data between relational databases and Hadoop.This blog post will teach you basic tasks that you can perform with Sqoop.

Rest API HTTP Response and Request Codes

Post author:nitendratech
Post category:Programming
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Post published:November 3, 2019

HTTP Status codes are standard codes and refer to the predefined status of tasks done at the server. For example, HTTP Status 404 states that the requested resource is not…

Difference between Overloading Vs Overriding in Java

Post author:nitendratech
Post category:Java
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Post published:October 20, 2019

This is one of the most common interview questions of all time when applying for a Java developer position. We will see the difference between Overloading and Overriding in this…

Hive Vectorization Technique

Post author:nitendratech
Post category:Hive
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Post published:October 17, 2019

The hive Vectorization technique is a feature (in both MapReduce and Tez Engine) that greatly reduces the CPU usage for typical query operations like scans, filters, aggregates, and joins. A…

Difference between Abstract Class and Interfaces in Java

Post author:nitendratech
Post category:Java
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Post published:October 13, 2019

An abstract class is a java class that has one or more abstract methods (nobody). It cannot be instantiated and defines an interface that has to be implemented by all…

Caching and Persisting Mechanism in Spark

Post author:nitendratech
Post category:Spark
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Post published:October 1, 2019

Caching and persistence are optimization techniques for (iterative and interactive) Apache Spark computations. This technique helps to save interim partial results, which can be reused in subsequent stages. These results,…

Linux Networking Commands

Post author:nitendratech
Post category:Linux
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Post published:September 27, 2019

Linux is a family of free and open-source software operating systems built around the Linux kernel.This post includes some of the important Linux networking commands

Linux Admin Commands

Post author:nitendratech
Post category:Linux
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Post published:September 27, 2019

It contains list of Linux Admin commands useful Process Monitoring

Data Locality in Spark

Post author:nitendratech
Post category:Spark
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Post published:September 24, 2019

Data locality refers to how close data is to the code processing it. Having the code and the data together tends to make computations faster in Apache Spark. If the…