Bug 1293370

Summary:	When worker killer is invoked, you get undefined method sort!
Product:	Red Hat CloudForms Management Engine	Reporter:	Jason Frey <jfrey>
Component:	Appliance	Assignee:	Gregg Tanzillo <gtanzill>
Status:	CLOSED ERRATA	QA Contact:	Pavol Kotvan <pakotvan>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	5.5.0	CC:	abellott, cpelland, jhardy, jprause, mfeifer, nachandr, obarenbo
Target Milestone:	GA	Keywords:	ZStream
Target Release:	5.6.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	5.6.0.0	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:
Clones:	1293374 (view as bug list)		Environment:
Last Closed:	2016-06-29 15:22:54 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1293374

Description Jason Frey 2015-12-21 15:13:59 UTC

Description of problem:
When the appliance runs low on memory, the worker killer is invoked.  The following error is raised:

[NoMethodError]: undefined method `sort!' for #<MiqAutomateWorker::ActiveRecord_Relation:0x0000000ca46ff8>  Method:[rescue in monitor]
/gems/ruby-2.0.0-p598/gems/activerecord-4.2.4/lib/active_record/relation/delegation.rb:136:in `method_missing'
/gems/ruby-2.0.0-p598/gems/activerecord-4.2.4/lib/active_record/relation/delegation.rb:99:in `method_missing'
/app/models/miq_server/worker_management/monitor.rb:110:in `block in do_system_limit_exceeded'
/app/models/miq_server/worker_management/monitor.rb:101:in `each'
/app/models/miq_server/worker_management/monitor.rb:101:in `do_system_limit_exceeded'

Version-Release number of selected component (if applicable):
5.5.1

How reproducible:
Always

Steps to Reproduce:
1. Fill up the system with worker
2. Wait for memory to run out
3. See error in log

Actual results:
Boom

Expected results:
The worker killer should kill some workers to reclaim memory, and log an appropriate error message when it does so.

Additional info:
Fixed in upstream PR https://github.com/ManageIQ/manageiq/pull/5916

Comment 4 errata-xmlrpc 2016-06-29 15:22:54 UTC

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-2016:1348