neutron.tests.functional.test_server.TestWsgiServer.test_restart_wsgi_on_sighup_multiple_workers failed with psutil._error.NoSuchProcess

Bug #1478190 reported by Ihar Hrachyshka
16
This bug affects 2 people
Affects Status Importance Assigned to Milestone
neutron
Fix Released
High
Nell Jerram

Bug Description

The test failed in feature/qos at least once so far. We don't touch wsgi code there, so I assume it's something from master.

http://logs.openstack.org/08/205508/1/check/gate-neutron-dsvm-functional/9f19c71/logs/

ft1.233: neutron.tests.functional.test_server.TestWsgiServer.test_restart_wsgi_on_sighup_multiple_workers_StringException: Empty attachments:
  pythonlogging:''
  pythonlogging:'neutron.api.extensions'
  stderr
  stdout

Traceback (most recent call last):
  File "neutron/tests/functional/test_server.py", line 210, in test_restart_wsgi_on_sighup_multiple_workers
    workers=2)
  File "neutron/tests/functional/test_server.py", line 156, in _test_restart_service_on_sighup
    end_workers = self._get_workers()
  File "neutron/tests/functional/test_server.py", line 109, in _get_workers
    if proc.ppid == self.service_pid]
  File "/opt/stack/new/neutron/.tox/dsvm-functional/local/lib/python2.7/site-packages/psutil/__init__.py", line 336, in ppid
    return self._platform_impl.get_process_ppid()
  File "/opt/stack/new/neutron/.tox/dsvm-functional/local/lib/python2.7/site-packages/psutil/_pslinux.py", line 470, in wrapper
    raise NoSuchProcess(self.pid, self._process_name)
psutil._error.NoSuchProcess: process no longer exists (pid=29324)

As far as I see, nothing in any other logs that would help to understand why the service died.

Elena Ezhova (eezhova)
Changed in neutron:
assignee: nobody → Elena Ezhova (eezhova)
Assaf Muller (amuller)
tags: added: functional-tests
Revision history for this message
Nell Jerram (neil-jerram) wrote :
Revision history for this message
Nell Jerram (neil-jerram) wrote :

(Is it useful to note that? I'm not yet familiar with OpenStack's systems for investigating how frequently certain types of errors are occurring.)

Revision history for this message
Kevin Benton (kevinbenton) wrote :
Assaf Muller (amuller)
Changed in neutron:
status: New → Confirmed
importance: Undecided → High
tags: added: gate-failure
Revision history for this message
Armando Migliaccio (armando-migliaccio) wrote :

7 hits in 7 days

Changed in neutron:
milestone: none → liberty-rc1
Revision history for this message
Nell Jerram (neil-jerram) wrote :

Isn't this just a straightforward race? The test code uses psutil.process_iter() to enumerate processes, then .ppid to get each one's PPID. If one of the enumerated processes terminates before the ,ppid call, psutil will throw NoSuchProcess.

Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix proposed to neutron (master)

Fix proposed to branch: master
Review: https://review.openstack.org/220764

Changed in neutron:
assignee: Elena Ezhova (eezhova) → Neil Jerram (neil-jerram)
status: Confirmed → In Progress
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix merged to neutron (master)

Reviewed: https://review.openstack.org/220764
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=42f80682d3eff58af60199f817ac402f457491a0
Submitter: Jenkins
Branch: master

commit 42f80682d3eff58af60199f817ac402f457491a0
Author: Neil Jerram <email address hidden>
Date: Sun Sep 6 01:09:16 2015 +0100

    Handle process disappearing before we ask for its PPID

    Change-Id: I573aba8e11dca16f8a6565f7e9704be18e938566
    Closes-Bug: #1478190

Changed in neutron:
status: In Progress → Fix Committed
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix proposed to neutron (feature/pecan)

Fix proposed to branch: feature/pecan
Review: https://review.openstack.org/224334

Revision history for this message
OpenStack Infra (hudson-openstack) wrote :

Fix proposed to branch: feature/pecan
Review: https://review.openstack.org/224357

Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix merged to neutron (feature/pecan)
Download full text (73.6 KiB)

Reviewed: https://review.openstack.org/224357
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=fdc3431ccd219accf6a795079d9b67b8656eed8e
Submitter: Jenkins
Branch: feature/pecan

commit fe236bdaadb949661a0bfb9b62ddbe432b4cf5f1
Author: Miguel Angel Ajo <email address hidden>
Date: Thu Sep 3 15:40:12 2015 +0200

    No network devices on network attached qos policies

    Network devices, like internal router legs, or dhcp ports
    should not be affected by bandwidth limiting rules.

    This patch disables application of network attached policies
    to network/neutron owned ports.

    Closes-bug: #1486039
    DocImpact

    Change-Id: I75d80227f1e6c4b3f5fa7762b8dc3b0c0f1abd46

commit db4a06f7caa20a4c7879b58b20e95b223ed8eeaf
Author: Ken'ichi Ohmichi <email address hidden>
Date: Wed Sep 16 10:04:32 2015 +0000

    Use tempest-lib's token_client

    Now tempest-lib provides token_client modules as library and the
    interface is stable. So neutron repogitory doesn't need to contain
    these modules.
    This patch makes neutron use tempest-lib's token_client and removes
    the own modules for the maintenance.

    Change-Id: Ieff7eb003f6e8257d83368dbc80e332aa66a156c

commit 78aed58edbe6eb8a71339c7add491fe9de9a0546
Author: Jakub Libosvar <email address hidden>
Date: Thu Aug 13 09:08:20 2015 +0000

    Fix establishing UDP connection

    Previously, in establish_connection() for UDP protocol data were sent
    but never read on peer socket. That lead to successful read on peer side
    if this connection was filtered. Having constant testing string masked
    this issue as we can't distinguish to which test of connectivity data
    belong.

    This patch makes unique data string per test_connectivity() and
    also makes establish_connection() to create an ASSURED entry in
    conntrack table. Finally, in last test after firewall filter was
    removed, connection is re-established in order to avoid troubles with
    terminated processes or TCP continuing sending packets which weren't
    successfully delivered.

    Closes-Bug: 1478847
    Change-Id: I2920d587d8df8d96dc1c752c28f48ba495f3cf0f

commit e6292fcdd6262434a7b713ad8802db6bc8a6d3dc
Author: YAMAMOTO Takashi <email address hidden>
Date: Wed Sep 16 13:20:51 2015 +0900

    ovsdb: Fix a few docstring

    Change-Id: I53e1e21655b28fe5da60e58aeeb7cbbd103ae014

commit c22949a4449d96a67caa616290cf76b67b182917
Author: fumihiko kakuma <email address hidden>
Date: Wed Sep 16 11:52:59 2015 +0900

    Remove requirements.txt for the ofagent mechanism driver

    It is no longer used.

    Related-Blueprint: core-vendor-decomposition
    https://blueprints.launchpad.net/neutron/+spec/core-vendor-decomposition

    Change-Id: Ib31fb3febf8968e50d86dd66e1e6e1ea2313f8ac

commit d1d4de19d85f961d388c91e70f31b3bafec418c5
Author: Kevin Benton <email address hidden>
Date: Thu Sep 3 20:25:57 2015 -0700

    Always return iterables in L3 get_candidates

    The caller of this function expects iterables.

    Closes-Bug: #1494996
    Change-Id: I3d103e63f4e127a77268502415c0ddb0d804b54a

commit 1ad6ac448067306...

tags: added: in-feature-pecan
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Change abandoned on neutron (feature/pecan)

Change abandoned by Doug Wiegley (<email address hidden>) on branch: feature/pecan
Review: https://review.openstack.org/224334

Thierry Carrez (ttx)
Changed in neutron:
status: Fix Committed → Fix Released
Thierry Carrez (ttx)
Changed in neutron:
milestone: liberty-rc1 → 7.0.0
Revision history for this message
Nell Jerram (neil-jerram) wrote :

I don't yet fully understand the OpenStack bug process, so asking what may be a rather basic question:

Do I (as the assignee, and fixer) need to do something explicit to close this bug down? From my point, the fix is done and released, and nothing further is needed, so the bug could potentially now be closed.

Thanks!

Revision history for this message
Nell Jerram (neil-jerram) wrote :

s/From my point/From my point of view/

Revision history for this message
Ihar Hrachyshka (ihar-hrachyshka) wrote :

Neil, it is closed when it's released.

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