Peter Shmukler created SOLR-11222:

             Summary: Facet estimation on stream
                 Key: SOLR-11222
             Project: Solr
          Issue Type: New Feature
      Security Level: Public (Default Security Level. Issues are Public)
          Components: streaming expressions
    Affects Versions: 6.6, 6.4.2
            Reporter: Peter Shmukler

I'm going to use Count Min Sketch algorithm on streaming data in order to 
estimate top hitters.
It will be implemented as special aggregate function.
In order to improve user's experience first response should be provided in 
sub-second latency. Next bulks should improve accuracy of estimation.

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