Practical Graph Analytics with Apache Giraph

CHAPTER 7

Graph IO Formats

This chapter covers

• Graph representations
• Reading input graphs in different formats
• Saving the result of your analysis

So far, you have familiarized yourself with the concept of graphs and their constituents—vertices and edges—through a variety of use cases. In Chapter 5, you learned how Giraph uses the corresponding Vertex and Edge objects to represent a graph and to programmatically manipulate Vertex and Edge objects and compute useful graph metrics. But before Giraph creates Vertex and Edge objects for you to use, a graph is stored on a storage system in different formats: for instance, plain text files or a binary ...