Bug 535678 (RHQ-2349) - get check-suspect-agents job to get the new backfiller data in a single query
Summary: get check-suspect-agents job to get the new backfiller data in a single query
Keywords:
Status: CLOSED NEXTRELEASE
Alias: RHQ-2349
Product: RHQ Project
Classification: Other
Component: Core Server
Version: unspecified
Hardware: All
OS: All
urgent
medium
Target Milestone: ---
: ---
Assignee: Joseph Marques
QA Contact:
URL: http://jira.rhq-project.org/browse/RH...
Whiteboard:
Depends On:
Blocks: 741450
TreeView+ depends on / blocked
 
Reported: 2009-08-13 18:32 UTC by John Mazzitelli
Modified: 2011-09-26 20:47 UTC (History)
1 user (show)

Fixed In Version: 1.3
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Bugzilla 741450 0 medium CLOSED RFE: Improve Availability Handling (Tracker) 2021-02-22 00:41:40 UTC

Internal Links: 741450

Description John Mazzitelli 2009-08-13 18:32:00 UTC 
org.rhq.enterprise.server.core.AgentManagerBean.checkForSuspectAgents()

        Query q = entityManager.createNamedQuery(Agent.QUERY_FIND_ALL_SUSPECT_AGENTS);

that query returns a composite. That composite should include the new BACKFILLED column data so we can avoid doing this for each suspected agent:

            if (!availabilityManager.isAgentBackfilled(record.getAgentId())) {

that will then become this:

if (!record.isBackfilled())

effectively reducing this down from N queries to 1 (N being the # of suspected agents)
Comment 1 John Mazzitelli 2009-08-13 18:34:05 UTC 
we need this in the PERF branch and trunk
Comment 2 John Mazzitelli 2009-08-13 18:35:54 UTC 
along with this, I say we increase the time between check jobs.

Right now its 30s in StartupServlet.

We have a quiet time of 15m right now (recently changed to that).

We could increase the job period to 1minute or even up to 5 minutes (thus we wouldn't detect an agent crash between 16m and 20m depending if we use 1m or 5m check job periods)
Comment 3 Joseph Marques 2009-08-13 18:49:44 UTC 
branch 1_2_0_GA_PERF: rev4893 - use backfilled precompute status bit in agent table to prevent N roundtrips back t othe DB for N suspect agents;
Comment 4 Joseph Marques 2009-09-03 07:11:28 UTC 
rev5080 - use backfilled precompute status bit in agent table to prevent N roundtrips back t othe DB for N suspect agents;
Comment 5 Red Hat Bugzilla 2009-11-10 21:02:40 UTC 
This bug was previously known as http://jira.rhq-project.org/browse/RHQ-2349
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