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  1. Hadoop HDFS
  2. HDFS-12483

Provide a configuration to adjust the weight of EC recovery tasks to adjust the speed of recovery

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Minor
    • Resolution: Duplicate
    • Affects Version/s: 3.0.0-alpha4
    • Fix Version/s: None
    • Component/s: erasure-coding
    • Labels:
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      Description

      The relative speed of EC recovery comparing to 3x replica recovery is a function of (EC codec, number of sources, NIC speed, and CPU speed, and etc).

      Currently the EC recovery has a fixed xmitsInProgress of max(# of sources, # of targets) comparing to 1 for 3x replica recovery, and NN uses xmitsInProgress to decide how much recovery tasks to schedule to the DataNode this we can add a coefficient for user to tune the weight of EC recovery tasks.

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              • Assignee:
                eddyxu Lei (Eddy) Xu
                Reporter:
                eddyxu Lei (Eddy) Xu
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                • Created:
                  Updated:
                  Resolved: