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https://issues.apache.org/jira/browse/HBASE-26337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17440914#comment-17440914
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Anoop Sam John commented on HBASE-26337:
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When we dont care/consider the locality aspect (Cloud storage so locality will 
be 0), we can make it not to pick the LocalityCandidateGenerator at all?  The 
cost is configured as 0 already.  Same case when we dont use Region replica 
feature at all. Corresponding costs are already 0.

> Optimization for weighted random generators
> -------------------------------------------
>
>                 Key: HBASE-26337
>                 URL: https://issues.apache.org/jira/browse/HBASE-26337
>             Project: HBase
>          Issue Type: Improvement
>          Components: Balancer
>            Reporter: Clara Xiong
>            Assignee: Clara Xiong
>            Priority: Major
>
> Currently we use four move candidate generators and pick one randomly for 
> every move with even probability, all with optimization associated with a 
> certain group of cost functions. We can assign weight for the random picking 
> of generators based on balancing pressure on each group. 



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