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How to Upgrade Apache Tomcat

The Apache Tomcat® software is an open source implementation of the Java Servlet, JavaServer Pages, Java Expression Language and Java WebSocket technologies 1. The tools Apache Tomcat 8 Apache Tomcat 9 2. Introduction In this tutorial we are going to learn how to upgrade the Tomcat Server 8 to the new Tomcat Server 9.   3. Prerequisites Tomcat 8 installed ...

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Difference Between Bigdata and Hadoop

In this article, we will understand the very basic question which the beginners in the field of Big Data have. That is What is the difference between Big Data and Apache Hadoop.                  1. Introduction The difference between Big Data and Apache Hadoop is distinct and quite fundamental. But most of the people ...

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Apache Hadoop RecordReader Example

In this example,we will have a look at and understand the concept of RecordReader component of Apache Hadoop. But before digging into the example code, we would like look at the theory behind the InputStream and RecordReader to better understand the concept.                   1. Introduction To better understand RecordReader, we have to ...

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Apache Tomcat Manager Tutorial

The Apache Tomcat® software is an open source implementation of the Java Servlet, JavaServer Pages, Java Expression Language and Java WebSocket technologies Table Of Contents 1. The tools 2. Introduction 3. Prerequisites 4. Launch Tomcat 5. Tomcat manager User 6. Launch the manager 7. Manager Application 8. Create a test application 9. Create a deployable war file for our application ...

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Hadoop Sequence File Example

In the article we will have a look at Hadoop Sequence file format. Hadoop Sequence Files are one of the Apache Hadoop specific file formats which stores data in serialized key-value pair. We have look into details of Hadoop Sequence File in the subsequent sections. 1. Introduction Apache Hadoop supports text files which are quite commonly used for storing the ...

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Difference Between Apache Web Server and Tomcat

Apache Tomcat and the Apache httpd server, were created for two different tasks but sometimes We can confuse the functionality of each other just because they could solve the same problems. 1. The tools Apache Tomcat 8 Apache Httpd server 2.4 2. Introduction In this article we are going to discover some key differences between Tomcat and httpd servers and ...

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Apache Tomcat Connector Example

The Apache Tomcat connector allows to use the Apache httpd server as a front-end for Apache Tomcat applications. With this configuration you can get some features like Clustering, Load Balancing, and enhanced Security, provided by the httpd server. 1. The tools Java JDK Apache Tomcat Apache httpd server mod_jk connector 2. Introduction In this example we are going to use the ...

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The Best Hadoop Analytics Solutions

Data Analytics using Hadoop is one of the most important requirement in businesses today due to the amount of data being generated and the value the businesses can generate from this data. We will look into some of the best Hadoop Analytics Solutions available in the market which can be used for data analysis.             ...

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How to Start and Restart Tomcat Server as a Service

Apache Tomcat is a web server and servlet container that is used to serve Java applications. A servlet is a Java technology-based Web component, managed by a container, that generates dynamic content. 1. The tools Debian based Linux distribution Microsoft Windows Java JDK Apache Tomcat 2. Introduction When you download Apache Tomcat binary distribution, you need to unzip the folder. Every time ...

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GWT AsyncCallback Example

In previous GWT tutorials we have seen how to setup basic project, how to create GUI using GWT Widgets and few more GUI related chapters. As part of this tutorial we are going to look into how GWT Web Application interacts with a backend server. GWT provides a couple of different ways to communicate with a server via HTTP. We ...

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