This article takes you through an example how to query, transform and visualize data from social media. We are going to collect tweets from twitter, store them in HDFS (Hadoop distributed file system) and use JAQL and Java MapReduce application to manipulate and transform the data. Finally, we will visualize the results using a spreadsheet-style […]
Jaql is one of the languages that helps to abstract complexities of MapReduce programming framework within Hadoop. It’s a loosely typed functional language with lazy evaluation (it means that Jaql functions are not materialized until they are needed). Jaql’s data model is based on JSON Query Language, it’s a fully expressive programming language (compared to […]
This article contains code example of searching and saving GPS coordinates for an addresses stored in the database. For this purpose we will use Google Maps API and Geocoding Service (Geocoding is process of converting addresses into geographic coordinates).