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Hadoop : A wordcount without explicit mapper/reducer
So I was trying out my first hadoop program and I was little wary of writing mapper and reducer. But I still wanted to write the program to give me the word count for all words in the input files So I...
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Hadoop : WordCount with Custom Mapper and Reducer
So here is the next article in series. In the last post we learnt how to write wordcount without using explicit custom mappers or reducers. You can find the post here Today we will go a step ahead and...
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Hadoop : WordCount with Custom Record Reader of TextInputFormat
So far in the series of articles we have seen how to create a mapreduce program without writing explicit mapper or reducer also in the second part we wrote the wordcount with our own custom mapper and...
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Sqoop : Hadoop : Importing data from RDBMS to HDFS
In this article we will go through a very important technique – importing data from SQL table to HDFS. We will do so on a sample database say ‘bigdata’ and a sample table say ’employee’ containing...
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Sqoop : Hadoop : Other Sqoop capabilities explored
In the last article Sqoop : Hadoop : Importing data from RDBMS to HDFS we explored basic feature of importing the data in HDFS using Sqoop. In this article we will try to explore other very important...
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Hadoop : Getting started with Hadoop and Mapreduce
Studying Hadoop or MapReduce can be a daunting task if you get your hand dirty at the start. Some of the prerequisites for learning Hadoop are having a good experience in Java. Good Analytical skills...
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Parallel Computing Solutions to Maze Traversal Problems Using Hadoop Mapreduce
( This was a research paper that we submitted to ICAPADS-2012 an IEEE – Institute of High performance distributed computing conference ) (Authors : Shantanu Deo, Sricharan R, Pradeep Thammaneni,...
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Introduction to Big Data and HDFS
Agenda : Understanding Big Data. Strategies to handle big data. The Apache Hadoop Project Hadoop performance and data scale facts Hadoop HDFS Hadoop Map Reduce ( Next Post ) Role of NoSQL Databases(...
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Hadoop Map Reduce Introduction and Internal Data flow
Agenda : What is Map Reduce Input – Output Data Types Usefulness and Applicability Execution Overview Map Reduce Example Word Count using Map reduce Other Features What’s not in Scope ? Hadoop Coding...
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Installing Hadoop on a Single Node Cluster – A Walkthrough
This article attempts to give a step by step walk through for creating a single Node Hadoop Cluster. It is an hands on tutorial so that even a novice user can follow the steps and create the Hadoop...
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