oslo.cache 2.1.0 breaks oslo_cache.memcache_pool

Herve Beraud hberaud at redhat.com
Wed Mar 4 12:28:58 UTC 2020


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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