oslo.cache 2.1.0 breaks oslo_cache.memcache_pool

Herve Beraud hberaud at redhat.com
Wed Mar 4 12:35:37 UTC 2020


`dead_timeout` [1] looks more appropriate in this case.

[1]
https://github.com/pinterest/pymemcache/blob/master/pymemcache/client/hash.py#L58

Le mer. 4 mars 2020 à 13:28, Herve Beraud <hberaud at redhat.com> a écrit :

> What do you think about adding a mapping between `retry_timeout` [1] and
> `dead_retry` [2]?
>
> [1]
> https://github.com/pinterest/pymemcache/blob/master/pymemcache/client/hash.py#L56
> [2]
> https://github.com/linsomniac/python-memcached/blob/bad41222379102e3f18f6f2f7be3ee608de6fbff/memcache.py#L183
>
> Le mer. 4 mars 2020 à 13:20, Herve Beraud <hberaud at redhat.com> a écrit :
>
>> I think our issue is due to the fact that python-memcached accept a param
>> named `dead_retry` [1] which is not defined in pymemcache.
>>
>> We just need to define it in our oslo.cache mapping. During testing we
>> faced the same kind of issue with connection timeout.
>>
>> [1]
>> https://github.com/linsomniac/python-memcached/blob/bad41222379102e3f18f6f2f7be3ee608de6fbff/memcache.py#L183
>> [2]
>> https://github.com/openstack/oslo.cache/blob/8a8248d764bbb1db6c0089a58745803c03e38fdb/oslo_cache/_memcache_pool.py#L193,L201
>>
>> Le mer. 4 mars 2020 à 12:21, Radosław Piliszek <
>> radoslaw.piliszek at gmail.com> a écrit :
>>
>>> Please be informed that oslo.cache 2.1.0 breaks oslo_cache.memcache_pool
>>>
>>> Kolla-Ansible gate is already RED and a quick codesearch revealed
>>> other deployment methods might be in trouble soon as well.
>>>
>>> This does not affect devstack/tempest as they use
>>> dogpile.cache.memcached instead.
>>>
>>> The error is TypeError: __init__() got an unexpected keyword argument
>>> 'dead_retry'
>>>
>>> For details see: https://bugs.launchpad.net/oslo.cache/+bug/1866008
>>>
>>> -yoctozepto
>>>
>>>
>>
>> --
>> Hervé Beraud
>> Senior Software Engineer
>> Red Hat - Openstack Oslo
>> irc: hberaud
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>
> --
> Hervé Beraud
> Senior Software Engineer
> Red Hat - Openstack Oslo
> irc: hberaud
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-- 
Hervé Beraud
Senior Software Engineer
Red Hat - Openstack Oslo
irc: hberaud
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