Friday, 2015-02-27

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openstackgerritEric Brown proposed openstack/oslo.config: Typo in StrOpt docstring: Integer to String  https://review.openstack.org/15969802:40
openstackgerritEric Brown proposed openstack/oslo.config: Typo in StrOpt docstring: Integer to String  https://review.openstack.org/15969802:42
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openstackgerritDavanum Srinivas (dims) proposed openstack/oslo-incubator: Expose opts entry point for version_utils  https://review.openstack.org/15964603:24
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openstackgerritDavanum Srinivas (dims) proposed openstack/oslo-incubator: Expose opts entry point for version_utils  https://review.openstack.org/15964603:40
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openstackgerritMerged openstack/taskflow: add jobboard trash method  https://review.openstack.org/15845905:11
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openstackgerritqiaojian proposed openstack/oslo.messaging: Fix matchmaker_redis ack_alive fails with KeyError  https://review.openstack.org/15567308:30
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openstackgerritqiaojian proposed openstack/oslo.messaging: Fix matchmaker_redis ack_alive fails with KeyError  https://review.openstack.org/15567308:35
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ttxjogo: rationale back then: http://lists.openstack.org/pipermail/openstack-dev/2014-August/043802.html08:46
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openstackgerritMehdi Abaakouk proposed openstack/oslo.messaging: Deprecates the localcontext API  https://review.openstack.org/14061610:20
openstackgerritMehdi Abaakouk proposed openstack/oslo.messaging: Update to oslo.context  https://review.openstack.org/15977810:20
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openstackgerritMehdi Abaakouk proposed openstack/tooz: Two locks acquired from one coord must works  https://review.openstack.org/15530310:34
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ihrachyshkadhellmann, hey! question re oslo.log11:10
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openstackgerritCedric Brandily proposed openstack/cliff: Document print_help_if_requested method  https://review.openstack.org/15980812:05
openstackgerritCedric Brandily proposed openstack/cliff: Document print_help_if_requested method  https://review.openstack.org/15980812:07
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openstackgerritMerged openstack/oslo.vmware: Add get_datastore_by_ref method to oslo.vmware  https://review.openstack.org/15935712:49
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dimsum__sileht: dhellmann: akhivin: ping13:29
inc0dimsum__, hi, I've tried Depends-On to global requirements, it didnt work:(13:29
silehtdimsum__, o/13:29
dimsum__wanted to chat about https://bugs.launchpad.net/oslo.messaging/+bug/141467413:29
openstackLaunchpad bug 1414674 in oslo.messaging "Number of Rabbitmq queues is growing from failover to failover" [Undecided,New] - Assigned to sajuptpm (sajuptpm)13:29
dimsum__inc0: give me a sec13:29
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akhivindimsum__, ping13:30
silehtakhivin, why do you use the topic to identify each worker instead of server or namespace of the target ?13:33
openstackgerritAbhijeet Malawade proposed openstack/tooz: fix mysql driver url parsing  https://review.openstack.org/15983513:34
dimsum__inc0: i tried with nova https://review.openstack.org/#/c/159514/. can you show me yours?13:34
akhivinsileht, I dont use. I just want to fix how it works in the heat13:34
inc0dimsum__, https://review.openstack.org/#/c/146841/13:34
silehtakhivin, heat don't use oslo.messaging correctly13:34
silehtekarlso, topic is not something to identify worker13:35
silehtekarlso, sorry13:35
silehtakhivin, ^13:35
dimsum__sileht: y, we need a discussion with heat team? akhivin is an unfortunate end user :)13:35
silehtdimsum__, yes it seems13:35
dimsum__sileht: have you looked at their use before?13:36
openstackgerritAbhijeet Malawade proposed openstack/tooz: fix mysql driver url parsing  https://review.openstack.org/15983513:36
silehtdimsum__, I wasn't aware of this random topic13:37
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dimsum__there is a global toggle amqp_auto_delete13:38
dimsum__but that may not be suitable for them from what i heard13:39
silehtdimsum__, this is historical, if you put that to True, you can lost notifications13:39
dimsum__right13:39
akhivinekarlso, why It is bad to create a rpc consumer for a process?13:40
akhivinekarlso, why It is bad to create a rpc consumer for a process?13:40
silehtakhivin, it's not bad13:41
akhivinekarlso, if Heat start the new process and it will live some time, then it is needed to create query to consume rpc calls13:42
dimsum__akhivin: the lifecycle of the topic is the problem i guess, when should it go away, who is responsible for it?13:42
shardyo/13:43
dimsum__hi shardy thanks, can you see scroll back please?13:43
openstackgerritAbhijeet Malawade proposed openstack/tooz: fix mysql driver url parsing  https://review.openstack.org/15983513:44
akhivindimsum__, we cannot rely on the process to remove the query in a garbage collection style13:44
akhivindimsum__, process can die unexpectedly13:45
dimsum__akhivin: if you store it somewhere when you come back up you can reuse it right?13:45
dimsum__is that an option shardy?13:45
akhivindimsum__,  so the process set up the rules at the moment of creation and I think the broker should take responsibility for a further life cycle13:47
silehtI wonder why all workers can't have all the same topic, with a different "server"13:48
akhivinsileht, it is possible to start the several workers at the same host.13:49
silehtI think the target should be Target(server='hostname-engine_id', topic='listener_engin_ping')13:49
silehtserver is not a host13:49
shardydimsum__: so if we're leaking queues that certainly sounds wrong - how do other projects handle this cleanup?13:49
silehta host can have many servers13:49
shardyI'm not sure I'm clear on the proposed solution atm13:50
dimsum__shardy: y heat leaks 2 queues every time it is restarted (with random names)13:50
dimsum__shardy: still trying to come to a common understanding, no solutions in sight13:51
silehtdimsum__, because they use topic instead of server to select the 'rpc server' to use13:51
dimsum__sileht: i see13:51
shardydimsum__: Yeah, each engine has a unique id because we use it for locking, but it may well be a bug that it influences the queue names13:52
dimsum__shardy: therve: please peek at  https://bugs.launchpad.net/oslo.messaging/+bug/141467413:52
openstackLaunchpad bug 1414674 in oslo.messaging "Number of Rabbitmq queues is growing from failover to failover" [Undecided,New] - Assigned to sajuptpm (sajuptpm)13:52
akhivinsileht, I offer for heat to store queue id in the config, but they said that it is impossible because Heat can run sever workers13:53
dimsum__akhivin: is it 2 leaks everytime?13:53
akhivindimsum__, yes13:53
dimsum__akhivin: more server workers == more leak?13:53
akhivindimsum__, at the normal workflow13:53
shardydimsum__: almost certainly13:53
akhivindimsum__, yes, and more failures == more leeks13:54
dimsum__sounds bad!13:54
shardyDon't any other services run multiple workers via the oslo ProcessLanuncer and consume RPC calls?13:55
akhivindimsum__, so If some node in the cloud restarted == new leaks again13:55
shardyIt's obviously a bug, but it'd help if we could look at another service for a non-buggy pattern for this13:56
dimsum__this is the spot right akhivin? https://github.com/openstack/heat/blob/master/heat/engine/service.py#L23013:57
akhivindimsum__, yes13:57
dimsum__shardy: sileht mentioned "Target(server='hostname-engine_id', topic='listener_engin_ping')" earlier13:58
silehtdimsum__, I will test with my proposal, I'm sure it fix one of the two leaks,13:58
silehtbut I need to check for the second one13:58
dhellmanndimsum__, sileht, bnemec, inc0, ihrachyshka: I'm going to be mostly offline today. We have family coming into town for a funeral.13:59
dimsum__sileht: can you please repeat the proposal, i am unclear13:59
shardyOk, well thanks for flagging this, I've triaged the bug, will need to chat to therve and jasond about it, as IIRC they've both got experience with this part of the heat code13:59
ihrachyshkadhellmann, ack13:59
dimsum__dhellmann: thanks for the heads up.13:59
silehtdimsum__, I will write a pactch with "Target(server='hostname-engine_id', topic='listener_engine_ping')"13:59
shardyIf someone can summarize any proposed solution in the bug, that'd be much appreciated, thanks!13:59
shardyalso, please add me to any reviews you may post14:00
dimsum__thanks shardy14:00
inc0dhellmann, sorry to hear that, thanks for info14:00
dhellmannshardy: I think what sileht is saying is to move the UUID from the "topic" field to the "server" field when you create the Target14:00
therveYeah it's unfortunately easy to forget how that all thing works :/14:00
dhellmanninc0: thanks14:00
shardydhellmann: Ok, thanks for the clarification, that sounds reasonable to me :)14:00
akhivindimsum__, https://github.com/openstack/heat/blob/master/heat/engine/service.py#L33214:01
dimsum__therve: very true14:01
dhellmannshardy: double-check that I got that right, sileht is definitely the expert :-)14:01
* dhellmann signs off14:01
therveIt sounds like one-topic several servers should work14:02
dimsum__akhivin: so you have everyone's attention, please let us know if we need to bring up this topic again :)14:02
silehtdimsum__, also and more globally we will have a problem one day to not set the x-expire on created queues, because rabbitmq autodelete is deprecated since a while, and recent version of py-amqp have started to warn about deprecation14:02
dimsum__ozamiatin: can you please help akhivin?14:02
dimsum__sileht: ack, we should deprecate that flag for kilo then14:03
therveWe apparently just introduced another version of that because why not14:03
dimsum__therve: haha14:04
silehtdimsum__, this is not sufficient, we have some kind of queues with a forced autodelete=True14:04
silehtdimsum__, the big issue is how to migrate from a autodelete queue to x-expire one, I have not yet investigated, but that looks not easy14:05
akhivindimsum__, ok, thanks. But I still dont understand further workflow. For example, I can prepare a patch draft due as a result of our discussion14:05
akhivindimsum__, ok, thanks. But I still dont understand further workflow. For example, I can prepare a patch draft as a result of our discussion14:05
silehtdimsum__, anyways this is an other subject14:06
dimsum__sure akhivin, we can ping folks on #heat channel if that does not work14:06
dimsum__sileht: smells like a spec :)14:06
silehtdimsum__, yes but I can only write the 'problem' section for now14:07
dimsum__haha14:07
ozamiatindimsum__, akhivin, sure what kind of help is needed?14:07
e0nehi all! could anybody help me with oslo.log and oslo.config? i'm trying to switch to oslo.log and got such error: http://paste.openstack.org/show/183010/14:07
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therveakhivin, I think sileht is going to try something14:08
akhivindimsum__, I am in touch with Heat team. And it seems they are ready to patch after oslo will patched14:08
therveMaube you can finish his patch if that's successful14:08
therveThere doesn't seem anything to fix in oslo14:09
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pas-hao/, heat core here14:10
pas-hare bug #141467414:10
openstackbug 1414674 in heat "Number of Rabbitmq queues is growing from failover to failover" [High,Triaged] https://launchpad.net/bugs/141467414:10
pas-hathat was the topic, right?14:11
therveYou're late to the party :)14:11
akhivinpas-ha, yes14:11
e0nedhellmann: hi! are you around?14:11
pas-hatherve, yes, slowpoke :( is the question solved?14:11
dimsum__pas-ha: http://paste.openstack.org/show/183016/ has the scroll back14:12
thervepas-ha, There is one possible workaround14:12
dimsum__e0ne: dhellmann is away today, i'll help, give me a few mins14:12
e0nedimsum__: thanks!14:12
dimsum__e0ne: did you see this http://openstack.markmail.org/thread/h2icz453iqwwmbur ?14:16
dimsum__log.register_options()14:16
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e0nedimsum__: oops. i've missed it.14:17
e0nereading...14:17
dimsum__e0ne: here's the review i did for nova - https://review.openstack.org/#/c/154260/23/nova/config.py,cm14:18
dimsum__e0ne: you may see other hints on the email thread and that review14:18
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silehttherve, shardy do you confirm that this rpc code is only to have each worker that ping each other ?14:19
akhivinozamiatin,  I will ask you at the near future if i will ready to offer a patch related to the  subject discussed. if you dont mind.14:19
thervesileht, No14:19
silehttherve, I see only the rpc method 'listening' for this rpc endpoint14:20
thervesileht, It actually sends calls iirc14:20
e0nedimsum__: thanks for help! i need to read thread and look to the patch for nova14:21
thervesileht, What about stop_stack and send?14:21
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ekarlsoenikanorov: like it fordoes people like to highlight me ? :p14:22
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silehttherve, :q14:23
silehttherve, I need to find the caller of that one14:23
thervesileht, _remote_call in the class on top14:23
dimsum__inc0: what's wrong in https://review.openstack.org/#/c/146841/?14:24
silehttherve, got it thx14:24
thervenp14:24
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inc0dimsum__, it seems oslo was imported anyway. Zuul shown me fail on requirements gate14:27
silehttherve, I understand you have a use case a bit different of all others, you really need to control which worker do the job14:28
inc0but thats not the case, sorry for false alarm, carry on:)14:28
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thervesileht, Yeah that's how it's designed for now at least14:28
dimsum__inc0: hehe14:28
thervesileht, But adding the server parameter should work right?14:28
silehttherve, it avoid duplication of the topic and the queue behind the topic, but the dedicated queue to talk the caller still there14:29
silehttherve, and because it's name is random...14:29
therveAH14:30
dansmithinc0: hi14:33
inc0good afternoon dansmith14:33
dansmithinc0: it's totally morning14:33
silehttherve, that an old bug in reality, when you remove a compute node from your infra, you have to clean the queue manually14:33
dansmithvery very morning14:33
inc0depends where you sit...like everything;)14:33
dansmithinc0: just wanted to see if you saw my nova POC and the few fixes I pushed up for things I found14:34
dansmithinc0: yeah, yeah :)14:34
inc0I can't say I did, could you give me a pointer please?14:34
dansmithinc0: https://review.openstack.org/#/c/159577/14:34
dansmithinc0: and this set of three: https://review.openstack.org/#/c/159656/14:34
dansmithinc0: they're really all test fixture issues14:35
thervesileht, It sounds like a good use case for auto-delete?14:35
dansmithinc0: although my  patch is very hacky, I don't think there's really anything in there that I foresee being an API issue i the library14:35
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inc0I'll take a look at it now, thanks14:36
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dansmithinc0: oh, there was one fix to the actual base serializer, but it's a bug, not an API change, and I was able to work around that too14:37
dansmithinc0: basically, that nova patch passes all devstack and unit tests with the 0.1.0 released from pypii14:37
inc0I'll try rebasing my heat PoC to them and see if they break anything on my end14:38
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dansmithokay14:38
dansmithanyway, if you're cool with it, I'm good to call this okay and push the g-r change14:39
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inc0well, I can't see anything potentially breaking...14:40
silehttherve, it's time to use x-expires and remove auto-delete (py-amqp >= 1.5 don't support it anymore)14:40
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e0nedimsum__: thanks once more! provided links helps it14:42
e0nedims_: one more noob question from me:)14:42
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inc0dansmith, +1 on all patches. I can't see what could potentially go wrong, and I hope I don't find out;)14:43
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e0nedims_: one more noob question from me, i did'n find it in docs14:44
dansmithinc0: yeah, I didn't mean to imply that they were problems, I meant to imply that "I made it work with no changes, and these few changes are all I found needing fixing anyway"14:44
e0neare oslo.config entrypoints needed only for gonfig generation?14:44
dansmithdhellmann: ready when you are: https://review.openstack.org/#/c/15938014:46
inc0you deleted lots of code in nova poc dansmith ;)14:46
dansmithinc0: yes, it was awesome14:46
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inc0it almost feel bad that nova won't use it in kilo14:51
superdannah14:51
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akhivinsileht, sorry, I just want to clarify for myself about the bug with random named queues. Can I offer the patch or you want to check some ideas before the fix?14:55
silehtakhivin, I see two things to fix: first, heat have to use the same topic for all workers and use the 'engine_id' instead 'host' for the server target14:56
silehtakhivin, this will reduce the proliferation by half14:58
ozamiatinakhivin, sure14:59
silehtakhivin, next we need to change something in oslo messaging to cleanup the remaining unbinded queues14:59
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silehtakhivin, for the first part: https://review.openstack.org/15987615:07
silehtakhivin, the seconds parts will be harder to fix15:08
silehtakhivin, the current workaround is to set auto_delete=True for heat15:08
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silehtthe fact is that changing queue attributes make an deployement un-upgradable, excepting if you are ok to restart everything (rabbit+all openstack)15:12
akhivinsileht, I have  to investigate the question related to Heat to understand fully.15:13
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openstackgerritVictor Sergeyev proposed openstack/oslo.db: POC: Add a public DB fixture  https://review.openstack.org/15988315:18
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akhivinsileht, I offer to the Heat team to change auto_delete in the config, but it seems this could have unpredictable consequences15:19
akhivinsileht, ok. thanks for the clarification15:21
dims_e0ne_: we are trying to move everyone to start using oslo-config-generator to generate their options, the entrypoints help in that effort15:21
silehtakhivin, auto_delete=True in the config file is not the best fix, but for now, I have nothing better to offer15:21
dims_akhivin: let's do 'engine_id' instead 'host' for the server target for now15:22
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silehtdims_, I have already had an other concern about what means 'server' in oslo.messaging, because zmq driver use it as hostname and it shoudln't15:27
silehtdims_, cinder+zmq is already broken due to this, my patch will break heat now...15:28
dims_sileht: let's track that as a launchpad bug15:28
dims_unless there's one already15:28
silehtdims_, we already have a but report for the cinder case15:28
dims_sileht: this one?15:29
dims_https://bugs.launchpad.net/oslo.messaging/+bug/128229715:29
openstackLaunchpad bug 1282297 in oslo.messaging "zmq doesn't listen to the right node topics" [Undecided,New]15:29
silehtdims_, yes15:29
silehtdims_, with zmq you have to write a file to describe your topic/server endpoint, but if the topic or the server is random, I don't see how zmq can works...15:30
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ozamiatinsileht, I've encountered this too, seems it only can properly work on localhost15:31
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ozamiatinsileht, It does work on devstack (still single host)15:32
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dims_ozamiatin: we'll need this kind of stuff if we ever want to use zmq...15:33
silehtozamiatin, it's start :p, I don't think it really works,  if I'm wrong, please create the gate job that works to not break it again15:33
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ozamiatindims_, I'll try to fix this15:36
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dims_thanks ozamiatin15:36
silehtdims_, an other zmq one : https://bugs.launchpad.net/oslo.messaging/+bug/138197215:38
openstackLaunchpad bug 1381972 in oslo.messaging "zmq driver broken with cinder multi-backend" [Undecided,In progress] - Assigned to James Page (james-page)15:38
ozamiatinsileht, You told we have experimental job with functional tests which is broken, how can I run it locally with tox?15:38
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silehtozamiatin, to setup it, I use devstack with the configuration of gate (ie: ZEROMQ_MATCHMAKER="redis")15:39
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silehtozamiatin, MATCHMAKER_REDIS_HOST=127.0.0.115:40
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silehtand then 'tox -e py27-func-zeromq'15:40
ozamiatinsileht, yeah, that is what I needed, thanks15:41
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openstackgerritOleg Gashev proposed openstack-dev/pbr: Update requirements to fix "python setup.py --help-commands" call.  https://review.openstack.org/15990115:54
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dims_sileht: let's do the small changes jay requested in https://review.openstack.org/#/c/146047/ don't know how we will ever have functional tests for that problem16:25
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openstackgerritRalf Haferkamp proposed openstack-dev/pbr: "packages" might list multiple directories  https://review.openstack.org/15991816:44
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openstackgerritMehdi Abaakouk proposed openstack/oslo.messaging: rabbit: heartbeat implementation  https://review.openstack.org/14604716:49
silehtdims_, done, creating functional tests for that will be really hard16:50
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jogottx: yeah it makes sense, its just too bad launchpad doesn't have a good solution17:18
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openstackgerritMerged openstack/oslo.versionedobjects: Make serializer use the provided base class for the indirection api  https://review.openstack.org/15965618:45
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openstackgerritMerged openstack/oslo.versionedobjects: Allow passing serializer and indirection API objects to Fixture  https://review.openstack.org/15965718:53
openstackgerritMerged openstack/oslo.versionedobjects: Properly serialize/deserialize arguments in fake indirection api  https://review.openstack.org/15965818:53
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openstackgerritDavanum Srinivas (dims) proposed openstack/oslo.log: Pickup instance from log format record  https://review.openstack.org/16000721:24
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stpierrepleia2: i can't make it to the meeting monday, but depending on the timeline for oslo.cache i may be able to help out a little. i didn't have the spare cycles to do the whole thing until L, but if you're going to lead that up i should be able to at least throw a few lines of code your way if you need21:26
pleia2stpierre: good news, thanks :) I hope my mentee can join this channel on Monday too, since she'll be doing the work (I'm just paving the way)21:28
stpierreah, okay21:29
stpierrei saw your nick, but i thought you were a bit beyond mentee-ing... :)21:29
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