Hi Bu, no, currently we do not have a DBInputFormat. We have an open issue with a google summer of code student working on a GoraInputFormat, which supports also reading from RDBMs through Gora. However, if/when it will get it, it will not provide a rich semantic as DBInputFormat, e.g. you'll be able to only provide scan-like/range queries, instead of ANY query like DBInputFormat.
I think that creating an DB[Vertex|Edge]InputFormat starting from the hadoop DBInputFormat should not be too hard and could prove to be a very useful contribution. If you think about providing an implementation, I can provide guidance. Best, Claudio On Fri, Sep 6, 2013 at 1:45 AM, Bu Xiao <[email protected]> wrote: > Hi Girapher, > > I am currently working on algorithm that requires reading the > vertices from MySQL table and not from HDFS. I thought that there has to be > a way of reading data from SQL table since Giraph is built on top of > Hadoop. But I do not seem to figure this part out. Do you have a class > similar to the DBInputFormat in Hadoop? Thank you very much for your help. > > > -- Claudio Martella [email protected]
