The following error occurs frequently in many environments:
2010-02-11 09:37:28,046 WARN [AgentScheduleSyncListener1] [org.hyperic.hq.measurement.server.session.MeasurementProcessorEJBImpl@134] No agent found for 3:16823
In most scenarios, the referenced entity id does not exist in the system, so it would appear a rogue agent is reporting this ID, which in turn causes an attempted reschedule of metrics. With the absence of any resource information, it's not possible to determine which agent is reporting the bad data without enabling debug logging on other classes.
Improvement request is to either:
1) Improve the logging of this so that the administration actionable steps to resolve the situation
2) Fix the code such that HQ automatically recovers from these warnings.