Query optimize this an edge count.

[okram]

A query of this form can be made more efficient:

g.V('type', 'person').inE('friends').count()

This can be done in a single MapReduce job as you don't need to traverse out edges given that its the in the same row. The optimal way to write this is:

g.V('type,'person').transform{it.inE('friends').count()}.sum()