Global factory for vertex IDs?

[Christian Krause]

Hi,

I was wondering if there is a way to register a global factory for new 
vertex IDs. Currently, I have to come up with new IDs in my compute 
method which does work, but with the penality that the required memory 
for vertex IDs is unnecessarily high. If there was a global vertex ID 
factory I could just keep a global counter and increase it by one when I 
need a new ID. Is something like that possible, or does it conflict with 
the BSP computation model? The thing is, in the end vertex ID collisions 
are detected by Giraph, so why not allow also a global vertex ID factory...

Cheers,
Christian