Guess I forgot about the "EntitiesByKind" index: http://code.google.com/appengine/articles/storage_breakdown.html
Yes, the correct number should be 22 datastore writes. -- Ikai Lan Developer Programs Engineer, Google App Engine plus.ikailan.com | twitter.com/ikai On Tue, Dec 20, 2011 at 4:58 AM, Brian Quinlan <[email protected]> wrote: > I think that Ikai made an off-by-one-error: it requires 22 writes > assuming that every property is indexed :-) > > Check out "Entity Delete (per entity)" at: > > http://code.google.com/appengine/docs/billing.html#Billable_Resource_Unit_Cost > > Cheers, > Brian > > On Tue, Dec 20, 2011 at 11:47 PM, supercobra <[email protected]> wrote: > > Could you explain (again?) how a deletion of an entity w/ 10- property > is 21 > > writes? > > > > > > On Mon, Dec 19, 2011 at 3:18 PM, Ikai Lan (Google) <[email protected]> > > wrote: > >> > >> One thing you can do is making this really slow. The free quota actually > >> gives you quite a bit of quota (if your app is relatively small) so if > you > >> can stretch out your job you can purge a relatively small datastore at > low > >> cost. > >> > >> I suspect what makes this expensive is datastore ops, not instance > hours. > >> Deleting an entity with 10 properties is 21 writes! There's not a lot > we can > >> do there ... > >> > >> -- > >> Ikai Lan > >> Developer Programs Engineer, Google App Engine > >> plus.ikailan.com | twitter.com/ikai > >> > >> > >> > >> On Mon, Dec 19, 2011 at 9:50 AM, Patrick Twohig > >> <[email protected]> wrote: > >>> > >>> Hi, > >>> > >>> I have a bit of old data that I want to clean out. I tried to write a > >>> fanout operation to clean out some of the old data, but it's actually > manged > >>> to run out my budget in a few hours. I'm curious if there would be a > way to > >>> delete huge amounts of old data that isn't needed anymore. Is there a > tool > >>> or something that i can use to efficiently purge entity groups from my > >>> application? Any help would be greatly appreciated. > >>> > >>> Thanks, > >>> Patrick. > >>> > >>> -- > >>> Patrick H. Twohig. > >>> > >>> Namazu Studios > >>> P.O. Box 34161 > >>> San Diego, CA 92163-4161 > >>> > >>> -- > >>> 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. > >> > >> > >> -- > >> 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. > > > > > > -- > > 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. > > -- > 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. > > -- 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.
