Thursday, 2018-08-02

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openstackgerritMerged openstack/oslo.policy master: generator: Reimplement wrapping of 'description'  https://review.openstack.org/48564600:49
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dulekHey, is there a way in oslo.config to deprecate a default value of the option? We want to drop what was initially the default value.09:55
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openstackgerritTheodoros Tsioutsias proposed openstack/taskflow master: Create KazooClient with taskflow logger  https://review.openstack.org/58820010:17
stephenfindulek: You can kind of hack it10:45
stephenfindulek: Remove the default and then check if it's set in code. If it's not set, set it to the old default but emit a warning that the behavior has changed and the default setting will no longer occur in the future10:46
stephenfindulek: There might be a better way to do it, especially with dhellmann's work around identifying where a value is actually configured, but that's how we've done it in nova in the past10:47
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dulekstephenfin: I thought of that, but hoped for automated solution. Thanks! :)11:21
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openstackgerritAndras Kovi proposed openstack/oslo.messaging master: Call listener stop only if listener is initialized  https://review.openstack.org/58821711:28
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openstackgerritBen Nemec proposed openstack/oslo.reports master: Update unit test to reflect latest oslo.config  https://review.openstack.org/58808815:31
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cfriesenkgiusti: sileht: mriedem suggested you folks were the ones to ask....just wanted to confirm that with rabbitmq we default to non-durable queues and non-persistent messages.  (And just for interest, is there even a way to ask for persistent messages with the rabbitmq driver?)15:37
openstackgerritMerged openstack/oslo.messaging master: Call listener stop only if listener is initialized  https://review.openstack.org/58821715:53
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kgiusticfriesen: yes by default non-durable queues and exchanges are used.   This can be overridden by the setting the amqp_durable_queues config item to True (it's in the [oslo_messaging_rabbit] config group)16:13
kgiusticfriesen: as far as message persistence: by default all messages should be marked as persistent16:13
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kgiusticfriesen: whether or not this results in storing to disk depends on how rabbit is configured AFAIKT16:14
cfriesenkgiusti: where is the message persistence set?  I only saw mention of it for pika.16:14
cfriesenkgiusti: also, the help text for amqp_durable_queues seems to say it's no longer applicable for RAbbitMQ 3.016:16
kgiusticfriesen: amqp_durable_queues no longer applicable?  I see a note for rabbit_ha_queues but not for amqp_durable_queues (master) - what release are you using?16:20
cfriesenhttps://github.com/openstack/oslo.messaging/blob/master/oslo_messaging/_drivers/impl_rabbit.py#L17016:21
cfriesenah, right. that's rabbit_ha_queues16:22
kgiusticfriesen: the amqp_durable_queues value is passed to all exchange and queues created by the rabbit driver16:22
kgiusticfriesen: the rabbit driver does not set the "delivery-mode" when publishing - according to the kombu docs it defaults to persistent: http://docs.celeryproject.org/projects/kombu/en/latest/reference/kombu.html?highlight=persistent#kombu.Exchange.delivery_mode16:24
cfriesenkgiusti: ah, okay.  much appreciated.16:25
cfriesenso if you have a persistent message on a non-durable queue, does the queue (and all the messages) gets deleted if the server dies/restarts?16:26
kgiusticfriesen: honestly I'm not sure what happens in that case :(16:28
kgiusticfriesen: this https://asafdav2.github.io/2017/rabbit-mq-persistentcy-vs-durability/ implies persistence requires durable queues and exchanges.16:29
cfriesenmakes sense, thanks16:35
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rm_workHey, I think maybe I have bad settings for oslo_messaging for my RMQ connection -- I am getting a ton of errors about missing heartbeats, though stuff seems to "work" still23:30
rm_workhttp://paste.openstack.org/show/727191/23:30

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