Hi,
I am a new to Giraph. I am working on implementing a graph algorithm that first reads vertex values from multiple sources (HDFS, MySQL). So basically, I would have two types of vertices, values of each vertex type can be read from a different data source. I know that, in MR, we can use DBInputFormat to retrieve tuples from RDBMS for example, and then join them with data read from HDFS. My question, can we do that in Giraph? i.e. can the graph be constructed from different data sources? Thanks a lot in advance. Best, Tom