Good Gear Guide
In Pictures: 18 essential Hadoop tools for crunchi...
The world is a big place and working with geographic maps is a big job for clusters running Hadoop. The GIS (Geographic Information Systems) tools for Hadoop project has adapted some of the best Java-based tools for understanding geographic information to run with Hadoop. Your databases can handle geographic queries using coordinates instead of strings. Your code can deploy the GIS tools to calculate in three dimensions. The trickiest part is figuring out when the word "map" refers to a flat thing that represents the world and when "map" refers to the first step in a Hadoop job.
The image at left shows several tiers of the tools from the documentation. The tools are available from http://esri.github.io/gis-tools-for-hadoop/.
In Pictures: 18 essential Hadoop tools for crunching big data