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  1. Hadoop HDFS
  2. HDFS-4408

Balancer for DataNode's Volumes

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Duplicate
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: datanode
    • Labels:
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      Description

      After a long time , I found some datanode :
      Volume a,b,c,d their and total space and configurations are same.
      but a used 100% , b c d are not , may be casued by write and delete files mega times .

      so it'll be better to write a balancer for datanode's volumes to improve the cluster's write performance;

      before balance : 4 write request ,3 volumes handles.
      after balance : 4 write request ,4 volumes handles.
      and in most cases, compute follows write , and it'll improve the read performance;

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              • Assignee:
                Unassigned
                Reporter:
                nice2mu Li Junjun
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                • Created:
                  Updated:
                  Resolved: