On Tue, Dec 11, 2012 at 2:14 PM, Oliver Hunt <oli...@apple.com> wrote:

> I don't understand why anyone is _speculatively_ rolling out patches.
>
> You should only be rolling it out if you _know_ the patch is bad.
>

Sometimes something bad happens to the tree, the sheriff doesn't know which
patch is responsible, and the change authors are not present to ask for
help.  In a case like this the sheriff has to either do speculative
rollouts or leave the tree broken.

Ideally, of course, change authors are around when something like this
happens.  But maybe the bustage doesn't happen until much later, due to
some subtle/latent issue, or maybe the change author is in fact
irresponsible.

PK
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