Posts

Showing posts from July, 2013

How to Pick Best Stocks in Share Market

Image
When thinking about investments, 3 things come to my mind, in Sri Lankan context. Buy real state in a suburb or a town that is fast growingPut in a Fixed Deposit in a bankInvest in the stock market As the current FD rates are in declining phase, it did not really come as a good option to me at the moment of writing this. Hence I thought to investigate a bit on investing in the share market as it doesn't really need a larger amount of money as to by a property as in option 1.
Below is an insightful speech by the richest person in Sri Lanka, who is known as a business magnate, 'Mr. Dhammika Perera', explaining how he started with share market (while the overall speech highlights many important facts, he specifically talks about share market from 6minutes and 26 seconds. Speech is in Sinhalese).

One thing he said, captured me that do not enter a business if you do not know about it. He also emphasized that it's the knowledge we should seek, not money, which surprised me t…

Hadoop Multi Node Set Up

With this post I am hoping to share the procedure to set up Apache Hadoop in multi node and is a continuation of the post, Hadoop Single Node Set-up. The given steps are to set up a two node cluster which can be then expanded to more nodes according to the volume of data. The unique capabilities of Hadoop can be well observed when performing on a BIG volume of data in a multi node cluster of commodity hardware.    It will be useful to have a general idea on the HDFS(Hadoop Distributed File System) architecture which is the default data storage for Hadoop, before proceed to the set up, that we can well understand the steps we are following and what is happening at execution. In brief, it is a master-slave architecture where master act as the NameNode which manages file system namespace and slaves act as the DataNodes which manage the storage of each node. Also there are JobTrackers which are master nodes and TaskTrackers which are slave nodes.    This Hadoop document inc…