Yes, we absolutely are building tools to allow self service migrations. However, there will be downtime. I don't think there is any way around this unless you are willing to accept data loss (the data that is written to the M/S app while the migration is happening that is not copied over). Fortunately, the downtime can be minimized to under a few hours.
We will not disable applications on master/slave. We just cannot provide an SLA for master/slave apps. In the long term, we *may* disable the option to create new master/slave applications. Ikai Lan Developer Programs Engineer, Google App Engine Blog: http://googleappengine.blogspot.com Twitter: http://twitter.com/app_engine Reddit: http://www.reddit.com/r/appengine On Fri, Jul 8, 2011 at 11:53 AM, Ronoaldo José de Lana Pereira < [email protected]> wrote: > Ikay, > > You said "for everyone who deploys using High Replication datastore". Is > this a hint that the Master/Slave will be discontinued when AppEngine leaves > preview? > > I know that you and the AppEngine team are very busy, but are you planning > to build tools to help us migrate a live app from MS to HR? My app has > around 5G of stored data, and is heavily used all day (around 150 reqs/sec), > so there is almost no room for a downtime migration period if that takes too > long to complete. Does it takes too long or is there any way to ask for help > when migrating this so it will be faster? Also, we had the bad idea to store > the encoded key strings to reference other objects in the datastore. If we > migrate the app from one appid to another, all those references will break, > right? Can we do something like migrate the storage but keep the appid? That > wold be great! > > Thanks, > > Ronoaldo > > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/google-appengine/-/EveQd_kfG40J. > > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
