I do use namespaces. Indeed, I tried to set it explicitally as you said and
it worked!
So will the issue be resolved? Should I set the namespace explicitally on
my code just in case?
Em segunda-feira, 13 de fevereiro de 2017 15:38:25 UTC-2, Nicholas (Google
Cloud Support) escreveu:
>
> I appreciate the extra troubleshooting. We've noticed an internal issue
> with memcache that may be related but require additional information to
> confirm.
>
> Are you using namespaces? If so, can you try setting the namespace in
> each method call explicitly?
>
> from google.appengine.api import memcache
> ns = "simple-namespace"
> memclient = memcache.Client()
> memclient.add("key", "A", namespace=ns)
> val = memclient.get("key", for_case=True, namespace=ns)
> result = memclient.cas("key", "B", namespace=ns)
> print result
>
> The purpose is to test the above instead of using:
> from google.appengine.api import namespace_manager
> namespace_manager.set_namespace(ns)
>
> I look forward to your feedback while I attempt a few more tests of my own.
>
> On Sunday, February 12, 2017 at 12:16:37 PM UTC-5, Carlos wrote:
>>
>> For what it's worth, I have an application where the "client.cas(key,
>> counter+1)" which has worked for years, and it practically a direct copy of
>> Guido's code on the page below, is suddenly failing in the past few days.
>>
>> http://neopythonic.blogspot.com/2011/08/compare-and-set-in-memcache.html
>>
>> I've debugged the code extensively. It isn't that complex. But
>> something certainly changed on App Engine.
>> I've tried variations of setting the initial value.
>> I've tried cas_reset().
>> I've tried flushing the cache just before the request.
>> "client.cas(key, counter+1)" is simply returning False every time during
>> the while True loop, eventually timing out after 30 seconds.
>>
>>
>> On Friday, February 10, 2017 at 1:43:22 PM UTC-6, Nicholas (Google Cloud
>> Support) wrote:
>>>
>>> Hey adriano_brasileiro,
>>>
>>> I was not able to reproduce the results you describe. This might
>>> require additional investigation which is better suited to the App Engine
>>> public issue tracker. I recommend that you file an issue there and posting
>>> a link to that issue here so that others may follow.
>>>
>>> When doing so, please include the following:
>>>
>>> - Timestamps for when you first and last noticed this issue occurring
>>> - Does it happen only when reaching a certain load?
>>> - Are there any other modules contending with this memcache?
>>>
>>> Also, I'd suggest using the *memcache.Client().add()* rather than the
>>> static *memcache.add()*. Lastly, the code you provide suggests that
>>> *memcache.Client().get()* returns a dict but it in fact returns the
>>> value of a key
>>> <https://cloud.google.com/appengine/docs/python/refdocs/google.appengine.api.memcache#google.appengine.api.memcache.Client.get>
>>>
>>> or *None*.
>>>
>>> I look forward to seeing you issue report.
>>>
>>> On Thursday, February 9, 2017 at 11:45:16 AM UTC-5,
>>> [email protected] wrote:
>>>>
>>>> I have an application in which I use the memcache to avoid race
>>>> conditions by retrieving keys using get(..., for_cas=True) and saving
>>>> using
>>>> cas. However, ever since yesterday 18:00 (GMT-02) cas is always returning
>>>> False for me. Even a code as simple as this:
>>>>
>>>> memcache.add('key', 'A')
>>>> memclient = memcache.Client()
>>>> dict = memclient.get('key', for_cas=True)
>>>> result = memclient.cas('key', 'B')
>>>>
>>>> print result
>>>>
>>>> always returns False on a clean memcache. I have tried to run this code
>>>> in different applications and result is always False. If i change the code
>>>> to use traditional get() and set(), result returns True. I havent done a
>>>> deploy in three days, so the code haven't changed as the problem started
>>>> to
>>>> appear. Did something change in the sdk?
>>>>
>>>
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