Hadoop Yarn and Its Commands
YARN stands for Yet Another Resource Negotiator. It is a centralized cluster resource management and job scheduling platform to deliver scalable operations across the cluster. It was introduced in Hadoop…
Introduction to Hive Query Language(HQL)
Apache Hive is a data warehouse software project built on top of Apache Hadoop for providing data summarization, query and analysis. Hive Query Language is SQL like query language which is used to query data from hive tables.
How can anyone Navigate on Linux using CD Command?
cd command, also known as chdir​ (change directory), is a command-line shell command. It is used in navigating the Linux/Unix system and is widely used when writing Shell Script. Change…
Introduction to Apache Hive
Apache Hive is a Data Warehousing Infrastructure built on top of Hadoop and provides table abstraction on top of data resident in HDFS as explained in their official page. It is used for providing data summarization ,query and analysis for large data sets.
Most Useful Database Queries
A query is a request for data or information from a database table or combination of tables. This data may be generated as results returned by Structured Query Language (SQL) or as pictorials, graphs or complex results, e.g., trend analyses from data-mining tools.This blog post gives an introduction to some of the useful database queries.
Introduction to Apache Kafka
Apache Kafka is an open source project for a distributed publish-subscribe messaging system rethought as a distributed commit log. Kafka stores messages in topics that are partitioned and replicated across multiple brokers in a cluster. Producers send messages to topics from which consumers read.
Scala Variables
Variable in Scala is defined as memory locations reserved to store values. When a variable is created, some memory is reserved for the space it will use. Scala has mainly…
Java Data Types
As Java is a strongly typed language, everything has a type in Java. Here, strongly typed means every variable/expression has a type and every type is strictly defined. Java compiler…
Introduction to Java Programming Language
Java is a general-purpose computer-programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible.
What is a Relational Database Management System(RDBMS)? Definitions and Types
Relational database is a computer-software application that interacts with end-users, other applications, and the database itself to capture and analyze data. A general-purpose DBMS allows the definition, creation, querying, update, and administration of databases.