Waiting for Transformations in a Job

Question

I am working with Pentaho Data Integration (aka Kettle) and I have several Transformations, let's call them A, B, C, D, E. B depends on A, D depends on C and E depends on B and D. In a job I'd like to run A, B and C, D in parallel:

           -> A -> B _
    Start<            \
           -> C -> D----> E

where A and C run in parallel. Is there any way to execute E only iff B AND D were successful? Right now, looking at the Job metrics, E gets executed as soon as either B OR D are finished.

Answer 1

I just found http://forums.pentaho.org/showthread.php?t=75425 and it seems like it's not easily possible to achieve what I want.