Released recently; http://google-opensource.blogspot.co.uk/2015/02/mapreduce-for-c-run-native-code-in.html
Looks like it doesn't need a special compiler or anything. Is there anything beyond needing to port C API that means one couldn't use it with D? Any reason why it wouldn't be something one could find quite useful ?
I can't type much at the moment so not in a position to try.