Rest API HTTP Response and Request Codes
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
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
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
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
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
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
It contains list of Linux Admin commands useful Process Monitoring
Data Locality in Spark
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…
How to Improve Data Quality in an Organization?
As data is frequently updated within an organization, achieving quality data requires constant monitoring and measurement as well as improvement actions. In addition to defect correction for quality data, it…
What is Entity and Table Relationship in Database?
When we design tables in a relational database, different tables can hold different information. This information is held in the form of an entity. So an entity can be defined…
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