tree 4aefd8112a6f64f52066e080f71b409caeb147df
parent 6173fb3949f29794e7f29274af3dc6d7c7bf1cab
author Clark Boylan <clark.boylan@gmail.com> 1342136686 -0700
committer Clark Boylan <clark.boylan@gmail.com> 1342482423 -0700

Cancel jobs behind a failed change.

Jobs behind a failed change will need to be rerun so cancel them
to free up resources at the front of the change queue. When a change
at the front of the queue fails it is dequeued and all the jobs behind
it are rerun. When a change in the middle of the queue fails all the
jobs behind it are cancelled. Then the jobs will be rerun when a
change at the front of the queue is dequeued for failure (which may
end up being the change that caused the initial cancellation, or it
may be a change further up in the queue).

Change-Id: Ic0ebe15ec1a8d3a21ff04a6769243729683807ed