[GitHub] sijie commented on issue #3217: Auto scaling up and down number of partitions

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sijie commented on issue #3217: Auto scaling up and down number of partitions 
URL: https://github.com/apache/pulsar/issues/3217#issuecomment-449523656
 
 
   @ConcurrencyPractitioner 
   
   typically bps (bytes per second) and mps (messages per second) are good factors to drive scaling up and down number of partitions. 
   
   two major items need to think about this feature:
   
   - how to track the partitions changes? consumers have to be aware of such partitions changes.
   - how to ensure key ordering between scaling up and down?
   
   Since this feature is a quite big feature, a PIP is preferred for the design.

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