Monday, 2016-12-05

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openstackgerritTuan Luong-Anh proposed openstack/oslo.serialization: Replaces uuid.uuid4 with uuidutils.generate_uuid()  https://review.openstack.org/40669504:13
openstackgerritTovin Seven proposed openstack/osprofiler: Use uuidutils instead of uuid.uuid4()  https://review.openstack.org/40670104:36
openstackgerritTuan Luong-Anh proposed openstack/oslo.context: Replaces uuid.uuid4 with uuidutils.generate_uuid()  https://review.openstack.org/40670204:37
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openstackgerritTuan Luong-Anh proposed openstack/oslo.cache: Replaces uuid.uuid4 with uuidutils.generate_uuid()  https://review.openstack.org/40670304:44
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openstackgerritTuan Luong-Anh proposed openstack/oslo.cache: Replaces uuid.uuid4 with uuidutils.generate_uuid()  https://review.openstack.org/40670306:04
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openstackgerritTuan Luong-Anh proposed openstack/oslo.context: Replaces uuid.uuid4 with uuidutils.generate_uuid()  https://review.openstack.org/40670206:14
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openstackgerritMehdi Abaakouk (sileht) proposed openstack/oslo.db: test_migration: Fix test migration setup  https://review.openstack.org/40677907:53
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openstackgerritMehdi Abaakouk (sileht) proposed openstack/oslo.db: provision module depends on testresources  https://review.openstack.org/40678608:11
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openstackgerritMehdi Abaakouk (sileht) proposed openstack/oslo.db: test_migration: use correct backend for cleanup  https://review.openstack.org/40677908:45
openstackgerritMehdi Abaakouk (sileht) proposed openstack/oslo.db: provision module depends on testresources  https://review.openstack.org/40678608:45
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zhangguoqinghttps://review.openstack.org/#/c/398788/  Needing some suggestion.09:28
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openstackgerritMehdi Abaakouk (sileht) proposed openstack/oslo.db: test_migration: don't use mixin use provisioning  https://review.openstack.org/40686109:54
openstackgerritMehdi Abaakouk (sileht) proposed openstack/oslo.db: provision module depends on testresources  https://review.openstack.org/40678609:54
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openstackgerritMehdi Abaakouk (sileht) proposed openstack/oslo.db: migration: don't assume the mixin use provision  https://review.openstack.org/40686109:57
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openstackgerritTovin Seven proposed openstack/oslo-specs: [Draft] Implement overhead control in OSProfiler  https://review.openstack.org/40688010:41
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openstackgerritTovin Seven proposed openstack/oslo-specs: [Draft] Implement overhead control in OSProfiler  https://review.openstack.org/40688010:43
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openstackgerritMehdi Abaakouk (sileht) proposed openstack/oslo.db: migration: don't assume the mixin use provision  https://review.openstack.org/40686110:48
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openstackgerritint32bit proposed openstack/oslo.db: Strip prefix `migrate_` in parameter `migrate_engine`  https://review.openstack.org/40461811:48
openstackgerritOleksii Zamiatin proposed openstack/oslo.messaging: [zmq] Support message versions for rolling upgrades  https://review.openstack.org/39051711:50
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openstackgerritMerged openstack/oslo.i18n: Replace six.iteritems() with .items()  https://review.openstack.org/40050813:17
openstackgerritMerged openstack/oslo.versionedobjects: Fix get_schema() for Enum  https://review.openstack.org/38906113:24
openstackgerritMerged openstack/oslo.db: migration: don't assume the mixin use provision  https://review.openstack.org/40686113:24
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jd__someone's cooking that new oslo.db release?13:30
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openstackgerritJohn Perkins proposed openstack/oslo.config: oslo validator  https://review.openstack.org/38455916:25
openstackgerritTovin Seven proposed openstack/oslo-specs: [Draft] Implement overhead control in OSProfiler  https://review.openstack.org/40688016:32
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openstackgerritMerged openstack/oslo.messaging: Use assertGreater(len(x), 0) instead of assertTrue(len(x) > 0)  https://review.openstack.org/40189917:09
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rtheisHi.  I'm seeing "Process forked after connection established! This can result in unpredictable behavior. See: http://docs.openstack.org/developer/oslo.messaging/transport.html" errors and was able to track it down to LbaasAgentManager.collect_stats run_periodic_tasks during neutron-server restart17:18
rtheisBesides slowing down the lbaas agent, is there a way to ensure neutron-server is ready before accepting just connections?17:19
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kgiustirtheis: I don't have much context regarding how lbaas is used, but once the first oslo.messaging call is made a socket is opened.  After that forking can cause failures (for various reasons).   Do you know if lbaas is forking?17:21
rtheisneutron-server is forking17:22
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rtheislbaas periodic task causes connection in between neutron-server setup and its fork17:23
rtheisneutron-server is seeing the exception.17:23
kgiustirtheis: rabbitmq messaging backend, or qpidd?17:23
rtheisrabbitmq17:23
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kgiustirtheis: do you know the version of oslo.messaging?17:24
rtheiskgiusti: checking ...17:24
rtheiskgiusti: 4.1.017:25
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kgiustirtheis: ok - technically that's not an exception, it is a warning.   The rabbitmq driver (as well as the others) warns when it detects that the current pid != pid when first start.17:28
kgiustirtheis: this isn't a problem with the olso.messaging library specifically - olso.messaging never forks.17:29
rtheiskgiusti: you're right.  I do see these warnings often followed by "Received 0x00 while expecting 0xce" errors in neutron-server17:29
rtheisthese are for the rpc processing17:30
kgiustirtheis: in general, forking within python is risky and IMHO is more trouble than it's worth.  That aside, the reason that warning was added is because applications using the library would fork after creating the connection (socket).  This results in two processes sharing the same socket.17:31
kgiustirtheis: you can imagine sharing the same socket by two processes leads to weirdness.17:31
rtheisyes17:31
kgiustirtheis: you may want to check with the neutron folks - they may have addressed this (assuming it's not a new bug)17:32
rtheiskgiusti: ok, thank you17:32
kgiustirtheis: but this is happening externally from the library - there is little oslo.messaging can do about it.17:32
kgiustiyw17:33
rtheiskgiusti: I wasn't sure if oslo.messaging had some type of delay option that may allow neutron-server to finish its setup and fork before getting into these mess that it does.17:33
electrocucarachartheis: is it happening with LBaaS only? I mean, do you have a special configuration to reproduce it17:33
rtheiselectrocucaracha: I think it can happen with other neutron services.17:34
kgiustirtheis: no - oslo wouldn't really know when it is 'safe' to open the socket, so there is no delay.17:34
rtheiselectrocucaracha: The key to fix in my tests is to set periodic_interval = 40 in /etc/neutron/neutron_lbaas.conf17:35
rtheisIt's default is 10 which makes it pound neutron-server at a faster rate during restarts17:35
rtheisI wonder if this is the neutron fix: https://review.openstack.org/#/c/276842/17:38
electrocucarachait looks like17:40
kgiustirtheis: that looks very promising.  I remember Dimitiy doing much work on this very issue.17:40
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openstackgerritJohn Perkins proposed openstack/oslo.config: oslo validator  https://review.openstack.org/38455918:04
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openstackgerritAkash Gangil proposed openstack/oslo.log: Avoid converting to unicode if not needed  https://review.openstack.org/40396218:37
gangilharlowja: dhellmann: added the inline comment18:40
dhellmanngangil : ack18:41
openstackgerritAkash Gangil proposed openstack/oslo.log: Avoid converting to unicode if not needed  https://review.openstack.org/40396218:41
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gangilthanks!18:44
dhellmanngangil : thanks for the detailed explanation (and of course the bug fix, too :-)18:44
gangildhellmann: I was surprised to find this out. Because of this no one can log to syslog when using python3. Maybe this just shows no one uses python3 yet.18:46
dhellmannor not syslog18:46
dhellmannbut I'm fairly sure no one uses openstack with python3 -- we don't claim support yet18:46
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openstackgerritAkash Gangil proposed openstack/oslo.log: Avoid converting to unicode if not needed  https://review.openstack.org/40396219:08
gangilthe comment on line69 since it contained non-ascii chars, I had to declare the file encoding at the top of the file19:09
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e0neharlowja: hi. are you around?19:50
harlowjai am19:50
harlowjae0ne for taskflow requirements bump19:50
harlowjaall u need to do is request it :)19:50
harlowjaif u want the newer one, just propose to requirements ;)19:50
e0neharlowja: ok. I'll do it right now:)19:50
harlowjak19:50
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e0neharlowja: https://review.openstack.org/407166 - let's wait for CI20:34
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harlowjae0ne cools20:55
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gangilharlowja: https://review.openstack.org/#/c/403962/6 can you please review? I updated the patch, with inline code comment22:08
harlowjayup22:08
harlowjathx22:08
gangilthanks!22:09
harlowjanp22:09
gangilis there any schedule when we cut oslo.log releases?22:10
harlowjayup, usually today/tommorow22:10
harlowjacan wait for yours to merge22:10
harlowjathen get that started22:10
gangilcool thanks a lot22:10
harlowjanp22:10
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openstackgerritMerged openstack/oslo.messaging: Periodically purge sender link cache  https://review.openstack.org/40386222:43
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openstackgerritMerged openstack/oslo.log: Avoid converting to unicode if not needed  https://review.openstack.org/40396223:00
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