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Posted to issues@hbase.apache.org by "Clara Xiong (Jira)" <ji...@apache.org> on 2021/03/15 18:55:00 UTC

[jira] [Created] (HBASE-25666) Explain why balancer is skipping runs

Clara Xiong created HBASE-25666:
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             Summary: Explain why balancer is skipping runs
                 Key: HBASE-25666
                 URL: https://issues.apache.org/jira/browse/HBASE-25666
             Project: HBase
          Issue Type: Improvement
          Components: Balancer, master, UI
            Reporter: Clara Xiong


Balancer needs to find the balance of keeping cluster balanced and stable. There is a configuration minCostNeedBalance as the threshold of imbalance to try to balance. Since we use a single score to combine all the factors we consider, it is hard for operation to understand why balancer is "stuck". We should add to master-status UI to show balancer is skipping runs and explain all factors considered, such as the weight and cost of all cost functions.

 



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