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Bug 1526437 - Tasks stuck in waiting after restart of pulp services
Tasks stuck in waiting after restart of pulp services
Status: CLOSED ERRATA
Product: Red Hat Satellite 6
Classification: Red Hat
Component: Pulp (Show other bugs)
6.3.0
Unspecified Unspecified
high Severity high (vote)
: 6.2.15
: Unused
Assigned To: satellite6-bugs
jcallaha
: FieldEngineering, PrioBumpField, Triaged
Depends On:
Blocks: 1122832 1552118
  Show dependency tree / graph
 
Reported: 2017-12-15 08:18 EST by Chris Duryee
Modified: 2018-09-19 11:07 EDT (History)
19 users (show)

See Also:
Fixed In Version: pulp-2.8.7.20-1
Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
: 1552118 (view as bug list)
Environment:
Last Closed: 2018-05-21 16:16:43 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
verification screenshot (50.83 KB, image/png)
2018-05-21 00:14 EDT, jcallaha 		no flags Details
Add an attachment (proposed patch, testcase, etc.)


External Trackers
Tracker ID Priority Status Summary Last Updated
Pulp Redmine 2835 High CLOSED - CURRENTRELEASE Tasks stuck in waiting after restart of pulp services 2018-02-27 21:32 EST
Red Hat Product Errata RHBA-2018:1672 None None None 2018-05-21 16:17 EDT

  None (edit)
Description Chris Duryee 2017-12-15 08:18:48 EST 
Description of problem:

(cloned from https://pulp.plan.io/issues/2835)

Summary
=======

Restarting a worker that is currently executing a task will leave that workers in a broken state. This issue can reproduced on both Celery 3.1.x and Celery 4.x, but only while using Qpid as a broker. I was not able to reproduce this issue while using RabbitMQ as a broker, using either version of Celery. I was also not able to reproduce this issue on versions of Pulp prior to 2.13. The means of shutting down the workers also does not appear to matter, e.g. "systemctl restart" and "pkill -9 celery; prestart" both work the same.

Repro
=====
1. Start pulp
2. Begin a task (e.g. sync)
3. While the task is running, restart the pulp worker running the task
4. After the worker has restarted, begin another task
5. Observe that the tasks are perpetually stuck in waiting


Version-Release number of selected component (if applicable): 6.3 beta, pulp-server-2.13.4.4


How reproducible: every time
Comment 2 pulp-infra@redhat.com 2017-12-15 08:32:46 EST 
The Pulp upstream bug status is at POST. Updating the external tracker on this bug.
Comment 3 pulp-infra@redhat.com 2017-12-15 08:32:48 EST 
The Pulp upstream bug priority is at High. Updating the external tracker on this bug.
Comment 7 pulp-infra@redhat.com 2017-12-18 10:03:12 EST 
The Pulp upstream bug status is at ASSIGNED. Updating the external tracker on this bug.
Comment 8 pulp-infra@redhat.com 2018-01-22 13:13:59 EST 
The Pulp upstream bug status is at POST. Updating the external tracker on this bug.
Comment 9 pulp-infra@redhat.com 2018-01-29 12:02:31 EST 
The Pulp upstream bug status is at MODIFIED. Updating the external tracker on this bug.
Comment 10 pulp-infra@redhat.com 2018-01-29 12:32:09 EST 
All upstream Pulp bugs are at MODIFIED+. Moving this bug to POST.
Comment 12 pulp-infra@redhat.com 2018-02-20 13:32:55 EST 
The Pulp upstream bug status is at ON_QA. Updating the external tracker on this bug.
Comment 13 pulp-infra@redhat.com 2018-02-27 21:32:33 EST 
The Pulp upstream bug status is at CLOSED - CURRENTRELEASE. Updating the external tracker on this bug.
Comment 14 sthirugn@redhat.com 2018-03-06 09:25:22 EST 
Created https://bugzilla.redhat.com/show_bug.cgi?id=1552118 for 6.3
Comment 21 jcallaha 2018-05-21 00:13:58 EDT 
Verified in Satellite 6.2.15 Snap 3.

Started a repo sync.
Waited until it was syncing packages.
performed a    service pulp_workers stop

Observed that the remaining steps were skipped and the task was stopped with a warning that the task was cancelled. See attached screenshot for verification.
Comment 22 jcallaha 2018-05-21 00:14 EDT 
Created attachment 1439365 [details]
verification screenshot
Comment 25 errata-xmlrpc 2018-05-21 16:16:43 EDT 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:1672
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