rmatharu opened a new pull request #1228: Adding metric that is 0 when 
container-starting, 1 when started.
URL: https://github.com/apache/samza/pull/1228
 
 
   Adding metric that is 0 when container-starting, 1 when started.
   
   Symptom: External monitoring and control (e.g., autosizing) require a way to 
know when a container has started (e.g., state-restore has completed). 
Currently, they have to rely on restore-time or container-startup-time metrics, 
which are a bit tricky to use.
   
   Cause: None
   
   Fix: Added a new metric, a counter, which is 0 and remains at 0 after the 
container has started. A Gauge on the other hand will go to 0 if its not 
updated.
   
   Tests: Samza test job with and without state.

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