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Bug 1510040

Summary: Do not purge session if there are no sessions
Product: Red Hat CloudForms Management Engine Reporter: Keenan Brock <kbrock>
Component: PerformanceAssignee: Keenan Brock <kbrock>
Status: CLOSED CURRENTRELEASE QA Contact: Tasos Papaioannou <tpapaioa>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 5.8.0CC: jhardy, kbrock, obarenbo, simaishi, tpapaioa
Target Milestone: GAKeywords: TestOnly, ZStream
Target Release: 5.9.0   
Hardware: x86_64   
OS: Linux   
Fixed In Version: Doc Type: No Doc Update
Doc Text:
Story Points: ---
Clone Of:
: 1510054 (view as bug list) Environment:
Last Closed: 2018-03-06 15:51:03 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:
Bug Depends On:    
Bug Blocks: 1510054    

Description Keenan Brock 2017-11-06 15:15:54 UTC
Description of problem:

Every 30 seconds, we purge the sessions table. For most customers, this table is empty.
This schedules many background jobs that will never produce any work.

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

How reproducible:


Steps to Reproduce:
1. ssh to an appliance
2. cd to vmdb
3. get queue messages for the generic worker
4. extract and count the commands that were sent through the queue

ssh ...
grep 'GenericWorker::Runner#get' log/evm.log>tmp/msg
ruby -ne 'puts $_.match(/Command: \[([^\]]*)\]/)[1]' tmp/msg|sort|uniq -c|sort -nr|head

Actual results:

One of the top 10 most popular commands is Session.check_session_timeout

Expected results:

It isn't

Additional info:

Comment 2 Dave Johnson 2017-11-06 15:44:18 UTC
Please assess the impact of this issue and update the severity accordingly.  Please refer to for a reminder on each severity's definition.

If it's something like a tracker bug where it doesn't matter, please set the severity to Low.

Comment 4 Tasos Papaioannou 2017-12-01 19:50:35 UTC
Verified on


  :session_store: sql

evm.log shows Session.check_session_timeout gets regularly queued.