[GitHub] [incubator-pinot] sajjad-moradi opened a new pull request #6625: Add realtime provisioning rule to recommendation engine

[GitBox]

sajjad-moradi opened a new pull request #6625:
URL: https://github.com/apache/incubator-pinot/pull/6625


   ## Description
   In this PR, a rule is added to recommendation engine to provide some 
recommendations on realtime provisioning. The rule utilizes MemoryEstimator. 
Memory estimator uses data characteristics - introduced in #6546 - to be able 
to generate a segment on the fly and then use its allocated memory to estimate 
the amount memory needed for the real time table.
   
   ## Testing Done
   Integration test with `RecommenderDriver`
   
   The json representation of the recommendations for the data characteristics 
provided in the test looks like the following:
   
   
![image](https://user-images.githubusercontent.com/8548220/109543034-b1a65980-7a7a-11eb-97da-e8ddd299425e.png)
   


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