[GitHub] markusthoemmes opened a new pull request #3780: Only send kafka offset metrics, if offsets are meaningful.

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markusthoemmes opened a new pull request #3780: Only send kafka offset metrics, if offsets are meaningful.
URL: https://github.com/apache/incubator-openwhisk/pull/3780
 
 
   The internal `offset` held by the KafkaConsumerConnector starts at 0 but is only meaningful after the first message has been read from Kafka. In case of an Invoker restart for example, the reported offset difference might be absurdly high, because the offset in Zookeeper is high, while the internal offset is still 0.
   
   ## My changes affect the following components
   <!--- Select below all system components are affected by your change. -->
   <!--- Enter an `x` in all applicable boxes. -->
   - [ ] API
   - [ ] Controller
   - [X] Message Bus (e.g., Kafka)
   - [ ] Loadbalancer
   - [ ] Invoker
   - [ ] Intrinsic actions (e.g., sequences, conductors)
   - [ ] Data stores (e.g., CouchDB)
   - [ ] Tests
   - [ ] Deployment
   - [ ] CLI
   - [ ] General tooling
   - [ ] Documentation
   
   ## Types of changes
   <!--- What types of changes does your code introduce? Use `x` in all the boxes that apply: -->
   - [X] Bug fix (generally a non-breaking change which closes an issue).
   - [ ] Enhancement or new feature (adds new functionality).
   - [ ] Breaking change (a bug fix or enhancement which changes existing behavior).
   
   ## Checklist:
   <!--- Please review the points below which help you make sure you've covered all aspects of the change you're making. -->
   
   - [X] I signed an [Apache CLA](https://github.com/apache/incubator-openwhisk/blob/master/CONTRIBUTING.md).
   - [X] I reviewed the [style guides](https://github.com/apache/incubator-openwhisk/wiki/Contributing:-Git-guidelines#code-readiness) and followed the recommendations (Travis CI will check :).
   
   

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