Now that we know how to use Hadoop to perform a simple word count on a fairly large text file, we can take a step further and use Hadoop for quantitative analysis. For a start, we can count the number of historical intraday percentage price changes of a stock.
To obtain a dataset, we can use the historical stock prices available from Yahoo! Finance. Using Firefox or any web browser in your CentOS environment, you can download the historical daily prices for a stock counter as a CSV file using the following link
In this example, we will use IBM as our example stock. Download the file to the
Downloads folder of your home ...