clarax commented on pull request #3260:
URL: https://github.com/apache/hbase/pull/3260#issuecomment-840346195


   @sunhelly We used it on a production cluster with about 7 user table and a 
test cluster with one user table. Both have meta table which has smaller number 
of regions than the number of nodes.Since I use the same aggregation as 
regionCountSkewCostFunction, for tables with smaller number of regions say 
[1,0,0,0], the cost is min so no calculation would be triggered.
   
   I simply add the scaled cost for each table so balancer will keep moving 
until all tables are balanced enough.


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