On Wed, Mar 08, 2017 at 10:09:52AM +1100, Xidorn Quan wrote: > On Wed, Mar 8, 2017, at 09:59 AM, Jan Varga wrote: > > On 07/03/17 23:43, Robert Strong wrote: > > > Are there any problems experienced by clients that downgrade to an > > > older version after their profile has been upgraded? > > > > > This major version change is downgrade-incompatible, so IndexedDB and > > DOM cache won't work in an older version if their profile has been > > upgraded. > > IndexedDB is also used internally, so stuff that depends on it likely > > won't work too. > > There's bug 1246615 [2] where you can find a discussion related to this > > issue. > > It would probably be a good idea to backup the old files when upgrading, > so that old version can at least pick the backup file to use. > > It is important especially given that we don't use a separate profile > for Nightly and Beta (which I think we really should!), but we sometimes > ask people to test them. It is very bad that we put users who want to > help us in risk of destroying their daily profile.
While talking about this... I think it's about time we had an actual plan for data cleanup. Last week, when the cloudflare thing happened, I went through the files in my profile looking for all my password-manager-managed passwords and the domains associated with them. They used to be in a sqlite db, and are now in json. The change happened 3 years ago, in Firefox 32. Guess what? the sqlite db is still there in my profile, with old, stale, data in it. Mike _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
