By Siddartha Mani

Few would argue with the statement that Hadoop HDFS is in decline. In fact, the HDFS part of the Hadoop ecosystem is in more than just decline - it is in freefall. At the time of its inception, it had a meaningful role to play as a high-throughput, fault-tolerant distributed file system. The secret sauce was data locality. 

By co-locating compute and data on the same nodes, HDFS overcame the limitations of slow network access to data. The…

Hadoop - MapReduce in an easy way

In the previous blog, we discussed about HDFS, one of the main components of Hadoop. I highly recommend going through that blog before moving onto MapReduce. This blog will introduce you to MapReduce, which is…

This blog is to give brief introduction about Hadoop for those who know next to nothing about this technology. Big Data is at the foundation of all the megatrends that are happening today, from social to the cloud to mobile devices to gaming. This blog will help to build the foundation to take the next step in learning this interesting technology. Let's get started:

1. What's Big Data?

Ever since…

In this post I will share some tips I learned after using the Apache Hadoop environment for some years, and  doing many many workshops and courses. The information here considers Apache Hadoop around version 2.9, but it could definably be extended to other similar versions.

These are considerations for when building or using a Hadoop cluster. Some are considerations over the Cloudera distribution. Anyway, hope it…

Imagine there are two girls standing in front of you – The first girl is cute, beautiful, interesting and has the smile that any guy would die for. And the other girl is average-looking, quiet, not-so-impressive… no different from the ones that you usually see in the restaurant cash counter. Which girl will you call out for a date? If you’re like me, you will choose the attractive girl. You see, life is full of options and making the right choice is what matters the…

Technology has remarkably changed the way we live today, there is no denial to it. Compared with our ancestors, we stand far away from them in using different technologies for our day-to-day works.

So many technologies are developed in the past couple of years that have revolutionized our lives, and it’s impossible to list each of them. Though technology changes fast with time, we can observe the trends in which it changes. Last year, 2016 had bought so many fresh…

Over the last few years, organizations have made a strategic decision to turn big data into competitive advantage. Owing to rapid changes in the trends of BI and DW space, Big Data has been driving the organizations to explore the    implementation aspects on how to integrate big data into the existing EDW infrastructure. The process of extracting data from multiple sources such as social media, weblogs, sensor data etc. and transforming that data suit the organization’s analytical needs is…

Hadoop – Introduction & features

Let us start with what is Hadoop and what are Hadoop features that make it so popular.

Hadoop is an open-source software framework for distributed storage and distributed processing of extremely large data sets. Important features of Hadoop are:

Hadoop is an open source project. It means its code can be modified to business requirements.

In Hadoop, data is highly available and…

Q1. What exactly is Hadoop?

A1. Hadoop is a Big Data framework to process huge amount of different types of data in parallel to achieve performance benefits.

Q2. What are 5 Vs of Big Data ?

A2. Volume – Size of the data

Velocity – Speed of change of data

Variety – Different types of data : Structured, Semi-Structured, Unstructured data.

Q3. Give me examples of Unstructured data.

A3. Images, Videos, Audios etc.

Q4. Tell me about Hadoop file system…

Does Big Data mean Hadoop? Not really, however when one thinks of the term Big Data, the first thing that comes to mind is Hadoop along with heaps of unstructured data. An exceptional lure for data scientists having the opportunity to work with large amounts data to train their models and businesses getting knowledge previously never imagined. But has it lived up to the hype? In this article, we will look at a brief history of Hadoop and see how it stands today.

2015 Hype Cycle –…

Hadoop is a big data management tool gaining popularity all over the world due to the need to manage the increasingly voluminous and diverse data. Due to the increasing popularity of social media and various photo sharing websites, the amount of unstructured data generated on the Internet is growing rapidly. This has overburdened the conventional data management…

In the book Hadoop: The definitive guide, Tom white quotes Grace Hopper, “In pioneer days they used oxen for heavy pulling, and when one ox couldn’t budge a log, they didn’t try to grow a larger ox. We shouldn’t be trying for bigger computers, but for more systems of computers.” For long Hadoop has been the data analytics system preferred by businesses all over. The recent entry of the spark engine has however given businesses an option other than Hadoop for data analytics…

Since its inception in the year 2008, the global Hadoop market has observed growth at a tremendous pace. This market, valued US$1.5 billion in 2012, is estimated to grow at a CAGR of 54.7% from 2012 to 2018. By the end of 2018, this market could amass a net worth of US$20.9 billion. With the massive amount of data generated every day across major industries, the global Hadoop market is anticipated to observe significant growth in the future as well.

Why…

For a world, that's churning out and recording infinite volumes of data every second, where dependency on data is steeply rising, the need to implement Big Data architecture becomes natural.

Big Data solutions can resolve specific big data problems and requirements for data analysis, curation, capturing, sharing, searching,…

The ongoing pursuit of data solutions occupies mindshare of consumers, vendors and service providers alike as they invest considerable amount of time, costs and efforts. The past attempts to concur data have resulted in solutions that combined databases, applications and tools with limited success. We are still struggling with a few unresolved, persistent legacy challenges such as - 

Data everywhere

Today, every enterprise has huge data…

Celebrate the Big Data Problems – #2

How to identify the no of buckets for a Hive table while executing the HiveQL DDLs ?

The dataottam team has come up with blog sharing initiative called “Celebrate the Big Data Problems”. In this series of blogs we will share our big data problems using CPS (Context, Problem, Solutions) Framework.

Context:

Bucketing is another…

Celebrate the Big Data Problems – #1

Daily we are facing many big data problems in production, PoC, and more perspective. Do we have any common repo to collect and share?  No, as we know we don’t have any. As always dataottam is looking forward to share the learnings with community to celebrate their similar, same kind of problems.  And…

Big Data is problem statement and it can be solved with one of the tools like Apache Hadoop. But having Apache Hadoop as infra to do our proof of concepts, proof of values is little challenging. Hence we brought 3 click ideas to have your Apache Hadoop installed.

What is Perquisite?

• Ubuntu 14.04
• Internet Connection

Can I have the Script? Yes

How…