Tuesday, 2015-09-15

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openstackgerritJoshua Harlow proposed openstack/tooz: Allow more kazoo specific client options to be proxied through  https://review.openstack.org/22325900:39
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openstackgerritMerged openstack/oslo.db: Move runtime test resources into setup.cfg [extras]  https://review.openstack.org/21734701:41
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openstackgerritapporc proposed openstack/oslo.service: doing monkey_patch for unittest.  https://review.openstack.org/22079802:20
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openstackgerritapporc proposed openstack/oslo.service: doing monkey_patch for unittest.  https://review.openstack.org/22079803:25
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openstackgerritJoshua Harlow proposed openstack/taskflow: Make compilation stack-less (WIP)  https://review.openstack.org/22339403:58
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openstackgerritYulia Portnova proposed openstack/oslo.messaging: Extend logging in amqpdriver  https://review.openstack.org/22178207:40
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openstackgerrityou_N_G proposed openstack/oslo.utils: only capture the ImportError when importing  https://review.openstack.org/22016807:57
openstackgerrityou_N_G proposed openstack/oslo.utils: only capture the ImportError when importing  https://review.openstack.org/22016807:59
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openstackgerritMehdi Abaakouk (sileht) proposed openstack/oslo.messaging: Remove useless additional requirement file  https://review.openstack.org/22310408:35
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openstackgerritRoman Podoliaka proposed openstack/oslo.db: Refactor deps to use extras and env markers.  https://review.openstack.org/18432809:18
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openstackgerritMerged openstack/oslo-incubator: Formally deprecate the memorycache module  https://review.openstack.org/22329409:26
openstackgerritMehdi Abaakouk (sileht) proposed openstack/oslo.messaging: Remove useless additional requirement file  https://review.openstack.org/22310409:30
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hayposileht: hum, it looks like https://review.openstack.org/#/c/223104/ doesn't want to pass :)09:52
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hayposileht: should I approve it again?09:52
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openstackgerritYulia Portnova proposed openstack/oslo.messaging: Extend logging in amqpdriver  https://review.openstack.org/22178210:19
zigosileht: I have 2 unit test failures building the Jessie backport of oslo.messaging: https://liberty-jessie.pkgs.mirantis.com/job/python-oslo.messaging/7/console10:25
zigoAny idea why?10:25
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ihrachysdhellmann: hi. we tried to set PBR_VERSION to reflect our rpm package version but then we get the failure in delorean: http://paste.openstack.org/show/457060/ is it expected to work as we try to use it?11:12
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dhellmannihrachys: I know it should be possible to override the version. What version are you using?11:25
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dhellmannzigo: those both look like timing-related problems, like something happened slower than expected. It seems like we have a fragile test if we're checking timing. sileht may have some insight.11:26
ihrachysdhellmann: smth like 7.0.0.0b4-dev145 in e.g. http://trunk.rdoproject.org/f21/99/b1/99b1bcf5c42c9fbbd92528adac930961f68857f4_c6e4999d/openstack-neutron-7.0.0.0b4-dev145.fc21.noarch.rpm11:29
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openstackgerritYulia Portnova proposed openstack/oslo.messaging: Extend logging in amqpdriver  https://review.openstack.org/22178211:32
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zigodhellmann: Ah ok, thanks. I'll just disable these tests then.11:49
kashyaphaypo (or anyone): Heya, I'm not quite sure if backwards compat is required here -- https://review.openstack.org/#/c/223133/11:55
kashyaphaypo: Uh, please disregard me :-) It's resolved there, and dims_ acked too.  Thanks!11:58
* kashyap didn't refresh the review11:58
dims_kashyap: +1 to get buy in from haypo and dhellmann :)11:58
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kashyapYeah, I'm just a "drive by" contrib in this case, I better double-ensure.11:59
dhellmanndims_, kashyap : I wonder if we should just have the app tell us what signal to use instead of hard-coding it?12:00
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kashyapdhellmann: Hi12:01
dhellmanndims_, kashyap : either way, that change is going to be release-notable so we should make sure it's listed in the mitaka release notes12:01
kashyapdhellmann: Yeah, the thing is, there are 32 other Real Time signals that Linux Kernel supports.12:01
kashyapSo, any of them is fine too.12:01
kashyapI was in two minds what to do about it, and danpb's comment on the review looks reasonable12:01
kashyapdhellmann: Yes, added a DocImpact there12:02
dhellmannI didn't actually read the patch, just the description...12:02
kashyapAnd, also grepping through all docs to see wherever it is mentioned12:02
kashyapdhellmann: That's all there is to it, might want to read the commit message if you did click on it. :-)12:02
dhellmannah, I see the docimpact tag now. I wonder if the doc team follows the olso libs for those12:03
dhellmannmy point was more that we've moved from one hard-coded value to another. why do we believe this one is any less likely to have a conflict with some other service? should this be configurable? should we let the app decide what signal to attach the report to?12:03
kashyapHmm12:04
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kashyapdhellmann: Since it's an "ad-hoc debugging mechanism", I do wonder if worth to make it configurable.  But, your question is fully valid.12:05
kashyaps/if/if it's/12:05
dhellmannkashyap: if a deployer chooses a different wsgi container other than mod_wsgi, what happens?12:05
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dhellmannit seems in general that the application should control the signal, rather than the library12:06
dhellmannwe could make the first step to that by having an optional argument to the initialization code in the lib that is the signal id, with a default of USR1 to maintain backwards compatiblity. then apps could individually set it to usr2 or whatever else they want12:07
openstackgerritRoman Podoliaka proposed openstack/oslo.db: Refactor deps to use extras and env markers.  https://review.openstack.org/18432812:07
kashyapdhellmann: Hmm, could you please comment on the review with these concerns?  (Or I can paste this conversation there.)12:07
dhellmannoh, hmm, there's already a signum argument there12:07
dhellmannso that's good :-)12:07
kashyapdhellmann: Did you also see danpb's (IIRC author of those reports) comment there?12:07
kashyapdhellmann: Yeah.12:08
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kashyapdhellmann: So, you can indeed send things like: `kill -RTMIN+5 $PID` already.12:09
kashyapI guess your concern is allayed now. :-)12:09
dhellmannkashyap: done12:11
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kashyapThanks, will comment there.12:12
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haypokashyap: making the signal configurable is easy. just add an optional parameter to setup_autorun(), no?12:23
kashyaphaypo: Just thought a default would be reasonable.  But, yeah, can try this too.12:25
haypokashyap: i didn't say a mandatory parameeter, i propose to add an optional parameter12:26
haypokashyap: just in case an application wants to use a custom signal12:26
kashyaphaypo: Custom signals can certainly work too, no need for any change.12:27
kashyaphaypo: As I wrote above, as of now, you can even send any of the realtime Linux signals (about 30 available) too, and it works just fine. -- kill -RTMIN+5 $PID12:28
kashyapHope that makes sense12:29
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kgiustiflaper87: ping - have you noticed that the gate-oslo.messaging-python34 test is occasionally failing with a seg fault?12:30
haypowait, i didn't understand that there is already a signum parameter, sorry12:30
haypokgiusti: it's because of ubuntu :-(12:31
kgiustiflaper87: https://jenkins07.openstack.org/job/gate-oslo.messaging-python34/160/console12:31
haypokgiusti: https://bugs.launchpad.net/ubuntu/+source/python3.4/+bug/136790712:31
kgiustihaypo: ah, I thought it was *me*12:31
openstackLaunchpad bug 1367907 in python3.4 (Ubuntu Trusty) "Segfault in gc with cyclic trash" [Undecided,In progress]12:31
haypokgiusti: ubuntu trusty still provides 3.4.0 which has a well known bug in the garbage collector12:32
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haypokgiusti: i posted a comment yesterday, and barry warsaw replied. ah!12:32
flaper87kgiusti: I hadn't noticed but it looks like haypo is all over it12:32
flaper87:D12:32
kgiustiflaper87: haypo is now my hero, sorry flaper87.12:33
haypokgiusti: it's really annoying. the bug is well known, ubuntu took more than 1 year to fix it. i don't understand12:33
haypokgiusti: it's just a shame, come on, python 3 matters! :-D12:34
flaper87kgiusti: :( but :(12:34
flaper87haypo: I'll take kgiusti back, I PROMISSE12:34
kgiustihaypo: that's unfortunate.  But remember - this is free software.  And you get what you pay for :)12:34
kashyaphaypo: Yeah, I should have mentioned about 'signum' parameter already.12:34
haypokgiusti: that's also why i moved to fedora. it's more reactive and have more recent version of developer tools12:35
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haypokashyap, dhellmann: sorry, it's hard to follow the discussion on IRC. i replied on https://review.openstack.org/#/c/223133/ instead12:39
kashyaphaypo: Indeed.  Thanks, it's just better to keep it all in one place.12:40
haypokashyap: again, registering SIGUSR1 and SIGUSR2 would solve dhellmann concern on deprecation12:40
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haypono need for complex solution ;)12:40
kashyaphaypo: Yeah, noted.  Indeed, not a fan of needless complexity.12:40
haypokashyap: why do you say that it's more complex?12:41
haypokashyap: FYI test.regrtest of the Python test suite registers a signal handler for SIGUSR1 and SIGALRM for example, https://hg.python.org/cpython/file/tip/Lib/test/regrtest.py#l48512:41
kashyaphaypo: Did I say "more complex"12:41
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kashyaphaypo: Thanks for the useful pointer.12:46
haypokashyap: sorry, do you prefer that you prefer to register SIGUSR1 & SIGUSR2 signals, or to modify all applications?12:46
kashyapLearnt a few things today :-)12:46
kashyaphaypo: Registering both sounds sane.12:46
haypokashyap: oh ok12:46
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dims_haypo: kashyap: +1 to registering both12:56
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dhellmannhaypo, kashyap, dims_ : registering both makes the problem worse, not better13:00
dhellmannregistering a signal handler removes the existing signal handler, so if an application wants to use a signal we've just deleted their handler13:00
dhellmannlibraries shouldn't register signal handlers for the same reason they shouldn't call sys.exit() -- the library doesn't own the execution flow13:00
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haypodhellmann: the library doesn't register a signal handler, the application explicitly calls a library function which registers signal handlers13:01
haypodhellmann: no?13:02
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dhellmannhaypo: it would be better if the library provided a callback that the application could install for its desired triggering mechanism (maybe that's an rpc call, or notification, instead of a unix signal, for example)13:03
dhellmannhaypo: the library should be passive13:04
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dims_hmm13:06
dims_dhellmann: 3 choices now? library in charge (try sigusr1 if already registered, try sigusr2), application in charge(call back) , operator in charge (config option)13:08
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dhellmanndims_: yeah. we need to decide if this is a library, and passively providing features, or a framework, and actively making requirements of how the app is structured13:09
* kashyap going for late lunch, back in a few and will read scrollback.13:11
openstackgerritBalazs Gibizer proposed openstack/oslo.i18n: Enhance the formatting error robustness patch  https://review.openstack.org/21678513:14
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kashyapdhellmann: I can understand your comment on "if it's a library" or "framework actively making req" -- but wouldn't that be a non-binary, depending on scenario answer?13:41
dhellmannkashyap: oslo.reports needs to decide what it is. I think it's going to be more usable across the heterogeneous openstack landscape as a library, rather than a framework13:41
kashyapBy the way, that point on review by Dan looks spot on to me -- letting the already overburdend admin to not choose from a bajillion signals for all different services.13:42
openstackgerritMerged openstack/oslo.messaging: Remove useless additional requirement file  https://review.openstack.org/22310413:42
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kashyapdhellmann: Sure, understands.  Where will this decision be made?  On this project's weekly meetings?13:42
dhellmannkashyap: that's a question for dims, I'm just raising an issue I see.13:43
kashyaps/understands/I understand/13:43
kashyapdhellmann: Noted, I'll let him chime in.13:43
kashyapdhellmann: Thanks (also for virtualenvwrapper & co)! :-)13:44
dhellmannkashyap: :-)13:45
kashyapYeah, that was my "gentle introduction" to how-to-use many virtual envs.13:46
kashyap(Manage trivially.)13:46
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openstackgerritOpenStack Proposal Bot proposed openstack/oslo-incubator: Updated from global requirements  https://review.openstack.org/22360814:17
openstackgerritOpenStack Proposal Bot proposed openstack/oslo.messaging: Updated from global requirements  https://review.openstack.org/22360914:18
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dims_ozamiatin: ping14:48
ozamiatindims_: pong14:48
dims_i see conflicts, want to walk me through them? http://paste.openstack.org/show/463115/14:48
ozamiatindims_: yeah sure14:49
dims_which files can i remove entirely?14:50
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ozamiatindims_: I already have all things merged, but git review doesn't allow me to push a review14:50
dims_ozamiatin: tar up the files and send them to me please?14:51
ozamiatindims_: ok, I'll e-mail14:51
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ozamiatindims_: try this link https://www.dropbox.com/s/enyecsfk8m0tjvx/oslo.messaging.zip?dl=014:57
mriedemdhellmann: per https://bugs.launchpad.net/oslo.utils/+bug/1488746 we need a stable/juno branch created for oslo.utils from the 1.4.0 release14:57
openstackLaunchpad bug 1488746 in oslo.utils "Uncapped *requirements.txt in stable/juno" [Undecided,New]14:57
dims_ozamiatin: got it14:57
mriedemdhellmann: which is the lower bound in g-r stable/juno: https://github.com/openstack/requirements/blob/stable/juno/global-requirements.txt#L6814:57
mriedemoslo.utils>=1.4.0,<1.5.0 # Apache-2.014:57
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dhellmannmriedem: ack, I think I have a request in my growing backlog for that already15:04
dhellmanndims_: you're good with the stable branch request, right? ^^15:04
mriedemdhellmann: yeah, old news15:04
dims_mriedem: dhellmann: +115:04
dhellmannmriedem: sorry it has taken so long to get to this, I'll do it now15:04
mriedemdhellmann: np15:04
mriedemthanks15:04
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dhellmannmriedem, dims_: done and .gitreview updated in https://review.openstack.org/22363615:06
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mriedemdhellmann: thanks15:06
dhellmannmriedem, dims_ : oslotest stable/juno is also created https://review.openstack.org/22363715:09
mriedemcool, i hadn't gotten far enough yet to know what oslotest was blocking15:09
mriedemoslo.i18n or pycadf or both or something15:10
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mriedemoslo.utils g-r sync for stable/juno here https://review.openstack.org/#/c/223641/15:12
dims_dhellmann: please bless this (https://review.openstack.org/223642) - need pushMerge for feature/zmq15:12
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dmitrymeHey guys, I've filed a bug for messaging - https://bugs.launchpad.net/oslo.messaging/+bug/1495568 . Basically here I suggest to switch from auto-delete queues to expiring queues. The later are also deleted by RabbitMQ if no consumers are left, but only after a user-defined grace period. That will help us avoid many issues with symptom 'exchange not found', when RabbitMQ prematurely deletes a queue which might be used again just a little later. I'd l15:17
openstackLaunchpad bug 1495568 in oslo.messaging "Use expiring queues instead of auto-delete ones in RabbitMQ driver" [Undecided,New]15:17
dmitrymeto hear your opinion if it makes sense to you.15:17
dmitrymesileht: dims suggested that probably you might have an opinion here15:17
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dhellmanndims_: +115:25
dhellmanndmitryme: that seems reasonable, but I'll defer to our messaging experts15:25
silehtdmitryme, this is a good idea I have made some try on this https://review.openstack.org/#/c/179708/, the biggest issue with this is how to upgrade already created queue on the rabbit cluster15:27
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silehtdmitryme, hum my change was not for the issue, but use the solution15:30
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silehtfor the/for the same15:31
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silehtdmitryme, I guess to solve the issue we need to write a specs that explain the plan to allow the rolling upgrade15:33
dmitrymedhellmann: thank you for reviewing15:33
dmitrymesileht: hmm, interesting problem, I didn’t thought about upgrade15:33
silehtdmitryme, not all queues attributes can be changed when the queue is used15:34
dmitrymesileht: yes, seems like auto-delete is one of the examples of such attributes15:35
silehtI clearly agree that removing autodelete will be good thing for us15:35
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dmitrymesileht: I gave it a little thought. It seems like switching to expiring queues will not disrupt rolling upgrade. The new code should work fine with old queues, at least documentation (https://www.rabbitmq.com/amqp-0-9-1-reference.html) says that“The server MUST ignore the auto-delete field if the exchange already exists.”15:47
dmitrymeprobably the same will apply to queue attributes15:47
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dmitrymethe only problem is that upgraded cloud will still run with auto-delete queues, though expirating queus might be configured instead15:48
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dmitrymes/expirating/expiring15:50
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rohit_mriedem: https://review.openstack.org/#/c/217415/ awaiting your approval, please take a look15:59
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mriedemrohit_: i'd rather see one of the ceilometer stable cores do that, like jd__ or eglynn16:00
rohit_mridem: Thanks, i'll ping them16:01
jd__I'm pinged16:01
mriedemconsider yourself pung16:02
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openstackgerritJoshua Harlow proposed openstack/tooz: Allow more kazoo specific client options to be proxied through  https://review.openstack.org/22325917:43
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mriedemdhellmann: dims_: ping for https://review.openstack.org/#/c/223641/ - that would become oslo.utils 1.4.1 for stable/juno so we can unblock python-ceilometerclient in stable/juno, i'll push the releases change once that's merged17:45
mriedemadam_g: ^ you too17:45
dhellmannmriedem: +217:46
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dims_mriedem: done17:50
mriedemthanks17:51
mriedemit'll be like xmas morning when tonyb wakes up17:52
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harlowjaits xmas already17:53
harlowjadamn17:53
* harlowja was talking to my dental hygenist lady yesterday about how she doesn't like xmas cause she has to listen to 24/7 xmas music for like 3 months, lol17:54
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harlowjajust incase u all wanted to know that, ha17:54
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openstackgerritJoshua Harlow proposed openstack/taskflow: Add a pooled conductor and have existing impl. derive from it  https://review.openstack.org/17464318:43
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openstackgerritVilobh Meshram proposed openstack/tooz: Expose Znode Stats and Capabilities  https://review.openstack.org/22194719:09
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openstackgerritJoshua Harlow proposed openstack/taskflow: Add a pooled conductor and have existing impl. derive from it  https://review.openstack.org/17464319:18
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openstackgerritvenkatamahesh proposed openstack/oslo.i18n: Added the home-page value with openstack.org  https://review.openstack.org/22377919:39
openstackgerritJoshua Harlow proposed openstack/taskflow: Add a executor backed conductor and have existing impl. use it  https://review.openstack.org/17464319:46
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openstackgerritvenkatamahesh proposed openstack/oslo.utils: Added the home-page value with openstack.org  https://review.openstack.org/22378620:02
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openstackgerritvenkatamahesh proposed openstack/oslotest: Added the home-page value with openstack.org  https://review.openstack.org/22378720:07
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openstackgerritvenkatamahesh proposed openstack/oslo.messaging: Fix the home-page value with openstack.org  https://review.openstack.org/22378820:14
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openstackgerritvenkatamahesh proposed openstack/oslo.db: Fix the home-page value with openstack.org  https://review.openstack.org/22379020:21
openstackgerritvenkatamahesh proposed openstack/oslo.service: Fix the home-page value in setup.cfg  https://review.openstack.org/22379120:26
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openstackgerritvenkatamahesh proposed openstack/oslo.log: Fix the home-page value in setup.cfg with openstack.org  https://review.openstack.org/22379520:34
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openstackgerritvenkatamahesh proposed openstack/oslo.config: Fix home-page value in setup.cfg with openstack.org  https://review.openstack.org/22379820:38
openstackgerritvenkatamahesh proposed openstack/oslo.middleware: Fix the home-page in setup.cfg with openstack.org  https://review.openstack.org/22380120:43
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mriedemi cannot figure out why py34 here is good in check and fails in gate? https://review.openstack.org/#/c/223641/21:19
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haypomriedem: a library upgrade fixed a bug?21:31
haypomriedem: what is the py34 failure? i'm not aware of it21:31
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mriedemhaypo: https://jenkins04.openstack.org/job/gate-oslo.utils-python34/36/consoleFull21:31
haypomriedem: it looks like a bug in testtools21:33
haypomriedem: https://review.openstack.org/#/c/223641/ upgrades testtools. >=0.9.36,!=1.2.0 becomes !=1.4.0,<=1.5.0,>=0.9.3421:33
haypohum, i'm not sure that it's an upgrade :)21:34
haypomriedem: maybe lifeless knows something about it ;)21:34
mriedemhaypo: but i'm not sure why it would fail in the gate queue but not check queue21:35
mriedemthat's weird21:35
mriedemanyway, i have to run, will poke on it later21:36
haypomriedem: ah, testtools 1.5.0 is used in both  cases21:37
lifelesshaypo: hmm ?21:38
haypomriedem, lifeless : in https://jenkins04.openstack.org/job/gate-oslo.utils-python34/36/consoleFull it looks like tokenize.open() fails because the file is not a real file :) file.readline() returns something different than a string21:40
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openstackgerritSurojit Pathak proposed openstack/oslo.versionedobjects: Added test for DateTimeField in obj_get_change  https://review.openstack.org/22233221:40
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lifelesshaypo: ack; sorry EMEETING21:41
haypothe "ResourceWarning: unclosed file <_io.TextIOWrapper name=1 encoding='UTF-8'>" error is strange. it looks like tokenize.open() opened a file called 1 (an int, not a string)21:41
haypo1 is sys.stdout file descriptor21:41
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openstackgerritJoshua Harlow proposed openstack/taskflow: Add a executor backed conductor and have existing impl. use it  https://review.openstack.org/17464322:27
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lifelesshaypo: is this new ?23:31
lifelesshaypo: 1.5 is quite old, I'd expect 1.8 to be getting chosen23:31
lifelesshaypo: openstack should only be testing with 1.823:32
openstackgerritVilobh Meshram proposed openstack/tooz: Expose Znode Stats and Capabilities  https://review.openstack.org/22194723:35
lifelesshaypo: ah, its a juno thing23:36
lifelesshaypo: so testtools 1.6 fixes this I suspect23:38
lifeless2015-09-15 20:53:15.012 |     match = cookie_re.match(line_string)23:38
lifeless2015-09-15 20:53:15.012 | TypeError: expected string or buffer23:38
lifelesshaypo: that means it got bytes on something needing a string, I think23:38
lifelesshaypo: hmm, no, I get a different error trying that23:39
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