Hi Jeff, To clarify, the last_nudged_at property *is* changed, but the entity stays at the top of the stack.
Ben On Apr 14, 12:26 pm, Jeff S <[email protected]> wrote: > Hi Ben, > > If you are experiencing write contention on some of these updates, > then that may explain why the last_nudged_at property is not changed > and an entity tends to stay at the top of the stack. Do you see > datastore timeout errors in these cases (I imagine the exception may > be hidden somewhere in the JavaScript <--> server exchange)? > > Thank you, > > Jeff > > On Apr 14, 11:48 am, Ben Nevile <[email protected]> wrote: > > > > > bump. I have observed this many times over the past few days. Maybe > > has to do with transactions and/or write contention, since there is a > > lot of that in my app. > > > Ben > > > On Apr 1, 8:23 pm, Ben Nevile <[email protected]> wrote: > > > > Hi GAE team and devotees, > > > > I have a entity that looks like > > > > class FacebookUser(db.Model): > > > expired_fotm = db.BooleanProperty() > > > last_nudged_at = db.DateTimeProperty() > > > > and an index that looks like > > > > - kind: FacebookUser > > > properties: > > > - name: expired_fotm > > > - name: last_nudged_at > > > > Unbeknownst to the users of my application, some javascript is > > > constantly polling a worker handler that finds the first entity in the > > > index, operates on it, then sets "last_nudged_at" to the current > > > time. There are more than a million of these entities so it takes > > > some time to go through them all. > > > > This afternoon using the Data Viewer and the GQL query "SELECT * FROM > > > FacebookUser where expired_fotm=True order by last_nudged_at" I > > > observed several times that an entity would remain "stuck" in the > > > first position in the index after it was processed. Usually it would > > > remain there only for 10-30 seconds. However this evening one entity > > > stayed in an incorrect index position for several hours. I put() it > > > again and it properly indexed itself. > > > > Has anyone ever observed anything like this? Let me know if I'm not > > > making myself clear. > > > > Ben <3 GAE --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
