[#HHQ-1153] Metric enabler can fail to enable or reschedule all metrics

Hyperic HQ

Metric enabler can fail to enable or reschedule all metrics

Created: 23/Oct/07 02:32 PM Updated: 24/Oct/07 08:08 AM

Component/s:

None

Affects Version/s:

3.1.1

Fix Version/s:

3.2.0, 3.1.4

Verify By:	Nipuna Bhayani
Last comment:	56 weeks, 2 days ago
Resolution Date:	23/Oct/07 02:33 PM

Description

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It's possible for the MeasurementEnabler to fail to fully enable or re-schedule metrics for all resources on an agent. This is because the bulk of the rescheduling is done inside the listener rather than in a real session and transaction within a session bean.

This can be observed occasionally in the server log with a batch update exception:

007-10-23 15:56:13,113 INFO [org.hyperic.hq.agent.client.AgentConnection] 10.100.9.143 -> rtm:scheduleMeasurements
2007-10-23 15:56:13,116 INFO [org.hyperic.hq.agent.client.AgentConnection] 10.100.9.143 -> track:trackRemove
2007-10-23 15:56:13,226 INFO [org.hyperic.hq.agent.client.AgentConnection] 10.100.9.143 -> rtm:scheduleMeasurements
2007-10-23 15:56:13,299 INFO [org.hyperic.hq.agent.client.AgentConnection] 10.100.9.143 -> track:trackRemove
2007-10-23 15:56:13,383 INFO [org.hyperic.hq.agent.client.AgentConnection] 10.100.9.143 -> rtm:scheduleMeasurements
2007-10-23 15:56:13,460 WARN [org.hyperic.hq.bizapp.server.session.AIBossEJBImpl] toggleRuntimeScan called for non-server type=3:34299
2007-10-23 15:56:13,476 INFO [org.hyperic.hq.measurement.server.session.MeasurementEnabler] Rescheduling metric schedule for [3:34299]
2007-10-23 15:56:13,495 INFO [org.hyperic.hq.agent.client.AgentConnection] 10.100.9.143 -> rtm:scheduleMeasurements
2007-10-23 15:56:13,538 INFO [org.hyperic.hq.agent.client.AgentConnection] 10.100.9.143 -> rtm:scheduleMeasurements
2007-10-23 15:56:13,617 ERROR [org.hibernate.jdbc.AbstractBatcher] Exception executing batch:
org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1

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Ryan Morgan - 23/Oct/07 02:33 PM

Trav fixed this:

http://svn.hyperic.org/?view=rev&root=Hyperic+HQ&revision=6324

and I backported to 3.1:

http://svn.hyperic.org/?view=rev&root=Hyperic+HQ&revision=6384

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Ryan Morgan - 23/Oct/07 02:34 PM

To verify nothing was broken with this commit, test the following:

1) Start a new agent on a new platform, verify all resources are imported and configured for metrics
2) Re-initialize an existing agent by shutting it down, removing the data directory then restarting. Verify all metrics are rescheduled.

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Nipuna Bhayani - 24/Oct/07 08:08 AM

Works fine in Release 3.1.3-EE build 493