sven-lange-last opened a new pull request #4537: Add action timeout limit to 
invoker assignment message in load balancer
URL: https://github.com/apache/incubator-openwhisk/pull/4537
 
 
   * Add information whether the action memory / time limits are standard, i.e. 
default, or not.
   * Restructure message and shorten it to make log volume smaller despite 
adding information.
   * The code uses the term "scheduling an activation to an invoker". Change 
message to use this term.
   * Also add more information to message that indicates that an activation 
could not be scheduled to an invoker because no usable invokers are available. 
The additional information helps to identify which particular activation was 
affected.
   
   ## Description
   
   * The proposed message changes are meant to help operators with 
understanding the effects of overloading an invoker with more activations than 
it can process in parallel from a user memory perspective. This can happen in 
an overload situation - i.e. no invoker has enough free memory available - or 
when activations time out with a forced acknowledgement.
   * If operators want to debug overloaded invokers, the time limit information 
gives an upper bound for how long an activation may occupy the invoker.
   * If actions use standard (default) memory and time limits, it's probably 
hard to draw conclusions regarding actual invoker load. Whenever non-standard 
limits are set, conclusions regarding actual invoker load are more meaningful. 
That's why this proposal adds information whether limits are set to standard 
values or not.
   
   ## 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
   - [ ] Message Bus (e.g., Kafka)
   - [x] Loadbalancer: only message enhancements
   - [ ] 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: -->
   - [ ] Bug fix (generally a non-breaking change which closes an issue).
   - [x] Enhancement or new feature (adds new functionality): only message 
enhancements
   - [ ] 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 :).
   - [ ] I added tests to cover my changes.
   - [ ] My changes require further changes to the documentation.
   - [ ] I updated the documentation where necessary.
   
   

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