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  1. HBase
  2. HBASE-25666

Explain why balancer is skipping runs

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Balancer, master, UI
    • Labels:
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      Description

      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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              • Assignee:
                GeorryHuang Zhuoyue Huang
                Reporter:
                claraxiong Clara Xiong
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                • Created:
                  Updated: