Comment 25 for bug 1593828

The outcome of bug #1604644 is that the mgo patch didn't make it into beta12. An updated version of that patch is landed now and will be in beta13.

The new version of the patch has logging that will let us verify that it's applied to the binary that's running, which was a big part of the difficulty to working out what was happening. It also has a fix for the bug when the retry limit is hit, although we haven't seen that happen anywhere - I only found it when I changed the retry limit to 0.