don,
my appid is bubblesixapp, it used to work before the 8/18 maintenance
with 200 keys in the datastore.delete(listKey). Then i lowered it to
100 today and still got the exception, then I lowered it to 5 keys and
it worked. this mean the latency on datastore.delete is much much
longer now. I think there is a performance degradation on delete that
no one is detecting. below is my code. can you try to insert 1000
objects then try to delete 200 keys at a time. Do you guys have a
guide line on how 'slow' is normal? can you please check? let's not
have any system performance degradation go unnoticed. thanks.
......
int batchSize = 5;
DatastoreService datastore =
DatastoreServiceFactory.getDatastoreService();
com.google.appengine.api.datastore.Query myquery = new
com.google.appengine.api.datastore.Query(className).setKeysOnly();
myquery.addFilter("vendorID",
com.google.appengine.api.datastore.Query.FilterOperator.EQUAL ,
vendorID);
List<Key> listKey=new ArrayList<Key>(batchSize);
int counter=0;
int fullcounter=0;
Iterable<Entity> entities=datastore.prepare(myquery).asIterable
();
for (Entity entity : entities ) {
listKey.add(entity.getKey());
counter++;
fullcounter++;
if (counter==batchSize) {
datastore.delete(listKey);
counter=0;
listKey.clear();
}
}
datastore.delete(listKey);
On Aug 18, 3:25 pm, Don Schwarz <[email protected]> wrote:
> On Tue, Aug 18, 2009 at 4:28 PM, repairman <[email protected]> wrote:
>
> > guys,
> > after your 8/18 maintenance my datastore.delete(listKey); call now
> > returns the exception below EVERYTIME. It works fine on local
> > server. I bet you guys turned write on but forgot to turn on the
> > delete permission after your maintenance. Can anyone please check?
>
> I'm going to choose to ignore the tone of your post and just assure you that
> this is not the case.
>
> Can you please write a sample program that deletes an entity on GAE
>
> > (not your local dev server) to see if it works for you?
>
> http://code.google.com/status/appengine/detail/datastore/2009/08/18#a...http://code.google.com/status/appengine/detail/datastore/2009/08/18#a...
>
> What is your app ID and how many datastore keys are you trying to delete at
> once? Have you tried reducing the number of keys in each call?
>
> Thanks,
> Don
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