This doesn't sound right to me. If you can get the keys and app IDs of some objects that are being "rolled back" we can take a look to see if there's something inherently wrong with those entities. There's a known issue with objects that are too large - for instance, objects with lots of list properties.
-- Ikai Lan Developer Programs Engineer, Google App Engine plus.ikailan.com | twitter.com/ikai On Sun, Aug 14, 2011 at 3:21 AM, Raymond C. <[email protected]> wrote: > I have recently ran into a problem after migrating to HRD: > > My application is a social online game which I have recently migrated from > M/S to HR Datastore around 3 weeks ago. Since 2 weeks ago I have started > receiving reports from players which their game progress are rolled back > suddenly while playing, which progress made in the recent few days are > missing. I have verified the problem through data on other entities (in > different entity group) that the reports are actually legit and at least > several days of progress are actually rolled back (with updates to the > entities in the last few days are all missing). > > Player's data in the game are retrieved through id ( > Player.get_by_id(player_id) ) and because the gap is so large (days) I > believe it is not a problem on my code (nowhere in my code cache player's > data). > > It has never happened before for nearly 1 year so I am guessing if it is > related to HRD. I remember there was a thread here before which reported > data being rolled back on HRD but I can not find it anymore. > > As you know with AppEngine datastore's distributed nature, it is so hard to > monitor this kind of problem to ensure the problem exist. I would like to > ask if anyone has ran into this problem as well or suspect that you have had > this problem before with your HRD application? > > -- > 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/-/hC-TziRgSkUJ. > 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.
