"Zhao, Tina" <tina.z...@intel.com> writes:

> QA will perform nightly auto testing on every Canary build, but if
> nothing changes comparing with the last canary build, QA would skip
> the nightly testing. I wonder if the Canary version update even no new
> comments since the last build? Or how would QA know if there is no
> change between two Canary binaries?

Right now, there is no way to know if two canary builds differ other
than looking at the commit logs in the crosswalk repository and checking
if there are any commits between two subsequent ones made by "Crosswalk
Release Engineering". In other words, if a commit saying "Bump version
to 1.29.6.0"'s direct ancestor is one saying "Bump version to 1.29.5.0"
then these two canaries are identical except for the version numbers.

Not building canaries when there have been no changes since the previous
ones is something in the TODO list, but I chose to let the system go
live without it because these days there are commits getting in almost
every day anyway (last week was a bit unusual due to the holiday in
PRC). Only canaries generated during the weekend have a higher
likelihood of containing no new changes.
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