Sunday, May 17, 2015

HOW HADOOP SOLVES THE ISSUES PRESENT IN TRADITIONAL DISTRIBUTED SYSTEM

12:26 PM - By ajay desai 0

                                     
                                                    I Node Failure

In hadoop environment, node failure cannot cause any downtime, as every part of the distributed data is replicated i.e. a copy of the data present on one node is there on some other node. So, if the node fails then the other can be contacted and processing takes place on that copy of data. So here, application is moving towards data unlike traditional Distributed Systems where is fetched to some other computing node where the application is running.


                                                  II Data Loss

 We need not worry about loss of data, as the data is replicated.

                                                III Network and Bandwidth issues

These issues are significantly reduced as hadoop follows master - slave architecture where the master node assigns tasks to slave nodes and coordinates with them to collect their outputs unlike traditional distributed systems where each slave node has to intimate about its task completion to the other slave node.

                                               IV Horizontal Scalability Problems

Adding nodes to the existing Hadoop system is very easy as Hadoop requires inexpensive software and commodity hardware.

                                            V Slow Processing
All the slave nodes concentrate only on their assigned data processing tasks instead of coordinating and communication with each other as all that work is taken care by the master node. So, data processing becomes very fast.

Thus Hadoop is a modern distributed system used for storing and analyzing Big data. Huge volume of data which cannot be stored and processed by using some technology is Big data for that technology, For ex: - Oracle can process data present in GBs but not PBs. So PBs of data is Bigdata for Oracle.

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I am Azeheruddin Khan having more than 6 year experience in c#, Asp.net and ms sql.My work comprise of medium and enterprise level projects using asp.net and other Microsoft .net technologies. Please feel free to contact me for any queries via posting comments on my blog,i will try to reply as early as possible. Follow me @fresher2programmer
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