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Rahul Anand's Blog If my mind can conceive it, and my heart can believe it, I know I can achieve it.
Before we delve into the IDE and start writing code lets understand a bit more about the MapReduce. The MapReduce computation takes a set of input key/value pairs, and produces a set of output key/value pairs. The user of the MapReduce library expresses the computation as two functions: Map and Reduce. Map takes an input pair and produces a set of intermediate ......

The best way to learn about Hadoop is getting your hands dirty with real Hadoop programs and their execution. In order to do so we first need a Hadoop installation in local development box. Steps to install Hadoop: 1. Download and install the Oracle Virtual Box https://www.virtualbox.org/... 2. Download and install Hortonworks Sandbox virtual ......

Apache Hadoop is a framework which supports distributed processing and distributed storage of very large data sets on clusters of commodity computers. The distributed processing is achieved through MapReduce and distributed storage is achieved through HDFS (Hadoop Distributed File System). The Hadoop framework is created especially for the clusters ......

Most of the JAVA IDE like Eclipse or InteliJ allow configuring the application through Debug configuration to attach a remote JVM and debug the code libraries. Let’s walk over this configuration and understand how this debugging works. Coming from MS Visual Studio background, I always missed the easy way of attaching your code by launching the Debug ......

Coming from C# background I assumed certain behavior while using split() method on strings that no matter what the returned array will have delimiter count + 1 elements. And my assumption cost me few hours of debugging to fix a simple issue!! Java behaves differently with split() and provides many possible options configurable through second parameter. ......

JavaBeans are reusable software components written in Java. It is only a standard defined to follow a convention of class design. It enables the ability to transform Java Bean objects into a single object (bean), which can be passed around easily using the serializable feature. A JavaBean is a Java Object that is serializable, has a 0-argument constructor, ......

Linux/Unix offers many text processing tools which are very powerful and can be used together to process data and extract information from files. Some of these are listed below with few commonly used examples: head -- display first lines of a file tail -- display the last part of a file cat -- concatenate and print files less – paged output, with support ......

I was looking for a feature in Ingre Vectorwise similar to ‘Linked Server’ in MS SQL Server and ‘Database Link’ in Oracle. But unfortunately it seems Ingre Vectorwise 2.5 does not offer anything similar. The Ingres has ‘Register Table as Link’ (Ingres Star) which is currently not supported in Vectorwise. So I think the only available option as of today ......

There are different tools available to connect to the Ingres Vectorwise database server. Actian (the parent company) offers following tools: 1. DBA Tools (current version is 10.1.0) 2. Director Client (current version is 1.0.0) These can be downloaded from http://esd.actian.com/platf... With the server installation ......

I have been programming in C# and .NET for a decade now. I loved the concept of LINQ and Lambda Expression which brings a layer of separation between the user request to process a task and the real execution of the task which can be made to execute differently in different systems. This is specially beneficial in todays world with multi-core machines. ......

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