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IBMStreams / streamsx.monitoring

The com.ibm.streamsx.monitoring toolkit provides capabilities to create applications that monitor IBM Streams and its applications.
https://ibmstreams.github.io/streamsx.monitoring/
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JobStatusSource generates near duplicate events when a PE starts up. #78

Closed ddebrunner closed 6 years ago

ddebrunner commented 7 years ago

When a PE starts up I consistently see two events saying it is healthy and running. They only differ in the timestamp.

This may be due to some underlying cause, where the PE has changed but the differences cannot be seen in the notification info. If that's the case then the SPLDOC should document more info about the events and what tuples might be emitted.

{notifyType="com.ibm.streams.management.pe.changed",domainId="standard1",instanceId="3a4b0956-ec2c-4cd0-98e7-9da7c70c0fa3",jobId=28,jobName="test2_ec::test_app_log_28",resource="10.143.13.241",peId=29,peHealth="healthy",peStatus="running",eventTimestamp=(1505363270,520000000,0)}
{notifyType="com.ibm.streams.management.pe.changed",domainId="standard1",instanceId="3a4b0956-ec2c-4cd0-98e7-9da7c70c0fa3",jobId=28,jobName="test2_ec::test_app_log_28",resource="10.143.13.241",peId=29,peHealth="healthy",peStatus="running",eventTimestamp=(1505363270,515000000,0)}
ddebrunner commented 7 years ago

After restarting a PE I saw three identical (except timestamps) with unhealthy,stopped pairing.

It's as though a good practice would be to include a DeDuplicate operator after the JobStatusSource. Maybe even JobStatusSource should be a composite that has the JMX operator followed by a DeDuplicate?

markheger commented 7 years ago

Composite JobStatusMonitor containing JobStatusSource->DeDuplicate should be added to the com.ibm.streamsx.monitoring.jobs namespace.