[GitHub] [druid] AmatyaAvadhanula commented on pull request #14484: Improve CostBalancerStrategy, deprecate cachingCost

["AmatyaAvadhanula (via GitHub)" <gi...@apache.org>]

AmatyaAvadhanula commented on PR #14484:
URL: https://github.com/apache/druid/pull/14484#issuecomment-1606729905

   @kfaraz This is a really neat idea.
   One other improvement that can borrowed from cachingCost could be to have two kinds of maps
   1. Datasource -> Interval -> count (`datasourceMap`)
   2. Interval -> count (`globalMap`)
   Total cost computed would then be the sum of the cost using the globalMap + cost computed using the datasource's subMap. This could be a simple, yet effective optimization when there are a lot of datasources in the cluster


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