Github user jteagles commented on the issue:
https://github.com/apache/tez/pull/33
@yingdachen, a few other considerations. 1)Normally, a feature like this
could be a candidate for feature branch. Do to the low risk interaction with
Systems and backwards compatible API, I think we could allow develop in trunk.
It may cause some coordinating with ongoing 0.10 build to prevent delay of that
release line. 2) Please provide some input on fault tolerance of AM and attempt
in the presence of Concurrent Edges. Specifically, we will want to provide
fault tolerance guarantees and possible interactions with AM recovery and
assign component responsibilities and interactions where needed.
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